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Cisco Security Advisory: Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities
by Cisco Systems Product Security Incident Response Team 25 Mar '09

25 Mar '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities Advisory ID: cisco-sa-20090325-mobileip http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml Revision 1.0 For Public Release 2009 March 25 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= Devices that are running Cisco IOS Software and configured for Mobile IP Network Address Translation (NAT) Traversal feature or Mobile IPv6 are vulnerable to a denial of service (DoS) attack that may result in a blocked interface. Cisco has released free software updates that address these vulnerabilities. This advisory is posted at the following link http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml Note: The March 25, 2009, Cisco IOS Security Advisory bundled publication includes eight Security Advisories. All of the advisories address vulnerabilities in Cisco IOS Software. Each advisory lists the releases that correct the vulnerability or vulnerabilities in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published in Cisco Security Advisories on March 25, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml Individual publication links are listed below: * Cisco IOS cTCP Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml * Cisco IOS Software Multiple Features IP Sockets Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml * Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml * Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml * Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Affected Products ================= Devices that are running an affected version of Cisco IOS Software and configured for Mobile IP NAT Traversal feature or Mobile IPv6 are vulnerable. Vulnerable Products +------------------ Devices running Cisco IOS Software and configured for Mobile IP NAT Traversal feature will have a line similar to the following in the output of the show running-config command: ip mobile home-agent nat traversal [...] or ip mobile foreign-agent nat traversal [...] or ip mobile router-service collocated registration nat traversal [...] Devices running Cisco IOS Software and configured for Mobile IPv6 will have a line similar to the following in the output of the show running-config command: ipv6 mobile home-agent To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the show version command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the show version command or may provide different output. The following example identifies a Cisco product that is running Cisco IOS Software Release 12.3(26) with an installed image name of C2500-IS-L: Router#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by cisco Systems, Inc. Compiled Mon 17-Mar-08 14:39 by dchih !--- output truncated The following example identifies a Cisco product that is running Cisco IOS Software Release 12.4(20)T with an installed image name of C1841-ADVENTERPRISEK9-M: Router#show version Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jul-08 20:25 by prod_rel_team !--- output truncated Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS Reference Guide" at the following link: http://www.cisco.com/warp/public/620/1.html Products Confirmed Not Vulnerable +-------------------------------- Cisco IOS XR is not affected by these vulnerabilities. Cisco IOS XE is not affected by these vulnerabilities. No other Cisco products are currently known to be affected by these vulnerabilities. Details ======= Mobile IP is part of both IPv4 and IPv6 standards. Mobile IP allows a host device to be identified by a single IP address even though the device may move its physical point of attachment from one network to another. Regardless of movement between different networks, connectivity at the different points is achieved seamlessly without user intervention. Roaming from a wired network to a wireless or wide-area network is also possible. More information on Mobile IPv6 can be found at the following link: http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-mobile.html The Mobile IP Support NAT Traversal feature is documented in RFC 3519. It introduces an alternative method for tunneling Mobile IP data traffic. New extensions in the Mobile IP registration request and reply messages have been added for establishing User Datagram Protocol (UDP) tunneling. This feature allows mobile devices in collocated mode that use a private IP address (RFC 1918) or foreign agents (FAs) that use a private IP address for the care-of address (CoA) to establish a tunnel and traverse a NAT-enabled router with mobile node (MN) data traffic from the home agent (HA). More information on Mobile IP NAT Traversal feature can be found at the following link: http://www.cisco.com/en/US/docs/ios/12_3t/12_3t8/feature/guide/gtnatmip.html Devices that are running an affected version of Cisco IOS Software and configured for Mobile IPv6 or Mobile IP NAT Traversal feature are affected by a DoS vulnerability. A successful exploitation of this vulnerability could cause an interface to stop processing traffic until the system is restarted. Offending packets need to be destined to the router for a successful exploit. These vulnerabilities are documented in the Cisco Bug IDs CSCsm97220 and CSCso05337 and have been assigned Common Vulnerabilities and Exposures (CVE) IDs CVE-2009-0633 and CVE-2009-0634. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsm97220 - Input queue wedged by MIPv6 packets CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed CSCso05337 - HA: Input queue wedged by ICMP packet CVSS Base Score - 7.1 Access Vector - Network Access Complexity - Medium Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 5.9 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability may result in an interface to stop processing traffic, causing a DoS condition. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. +-------------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+------------------------------------------------------| | Affected | | Recommended | | 12.0-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.0 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.1-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.1 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.2-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.2 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.3-Based | First Fixed Release | Release | | Releases | | | |------------+--------------------------------------+---------------| | 12.3 | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3B | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3BC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3BW | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3EU | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JEA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JEB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JEC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JL | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JX | Not Vulnerable | | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3T | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.3TPC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3VA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XD | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XE | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XF | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XG | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XI | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XJ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XL | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XQ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XR | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XS | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XU | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XW | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XX | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XY | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XZ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YD | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YF | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YG | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YH | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YI | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YJ | Not Vulnerable | | |------------+--------------------------------------+---------------| | | Releases prior to 12.3(11)YK3 are | 12.4(22)T1 | | | vulnerable, release 12.3(11)YK3 and | | | 12.3YK | later are not vulnerable; first | 12.4(15)T9; | | | fixed in 12.4T | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.3YM | 12.3(14)YM13 | 12.3(14)YM13 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YU | Vulnerable; migrate to 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | Releases prior to 12.3(14)YX10 are | | | 12.3YX | vulnerable, release 12.3(14)YX10 and | 12.3(14)YX14 | | | later are not vulnerable; | | |------------+--------------------------------------+---------------| | 12.3YZ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3ZA | Not Vulnerable | | |------------+--------------------------------------+---------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+--------------------------------------+---------------| | | | 12.4(18e) | | | 12.4(18e) | | | 12.4 | | 12.4(23a); | | | 12.4(23a); Available on 30-APR-2009 | Available on | | | | 30-APR-2009 | |------------+--------------------------------------+---------------| | 12.4JA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JDA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JL | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JMA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JMB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JX | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4MD | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4MR | 12.4(19)MR | 12.4(19)MR2 | |------------+--------------------------------------+---------------| | 12.4SW | Not Vulnerable | | |------------+--------------------------------------+---------------| | | 12.4(20)T | 12.4(22)T1 | | | | | | 12.4T | 12.4(15)T8 | 12.4(15)T9; | | | | Available on | | | 12.4(15)T9; Available on 29-APR-2009 | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | 12.4(15)T8 | 12.4(22)T1 | | | | | | 12.4XB | 12.4(20)T | 12.4(15)T9; | | | | Available on | | | 12.4(15)T9; Available on 29-APR-2009 | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | 12.4(4)XD12; Available on | 12.4(4)XD12; | | 12.4XD | 27-MAR-2009 | Available on | | | | 27-MAR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XE | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XG | Not Vulnerable | | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4XL | 12.4(15)XL4 | 12.4(15)XL4 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XN | Vulnerable; contact TAC | | |------------+--------------------------------------+---------------| | 12.4XP | Vulnerable; contact TAC | | |------------+--------------------------------------+---------------| | 12.4XQ | 12.4(15)XQ2 | 12.4(15)XQ2 | |------------+--------------------------------------+---------------| | 12.4XR | 12.4(15)XR4 | 12.4(22)T1 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XV | Vulnerable; contact TAC | | |------------+--------------------------------------+---------------| | 12.4XW | 12.4(11)XW10 | 12.4(11)XW10 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XY | 12.4(15)XY4 | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XZ | 12.4(15)XZ1 | 12.4(15)XZ2 | |------------+--------------------------------------+---------------| | 12.4YA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4YB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4YD | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== The following mitigation and identification methods have been identified for these vulnerabilities: Infrastructure Access Control Lists +---------------------------------- Although it is often difficult to block traffic that transits a network, it is possible to identify traffic that should never be allowed to target infrastructure devices and block that traffic at the border of networks. Infrastructure Access Control Lists (iACLs) are a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for these specific vulnerabilities. The iACL example below should be included as part of the deployed infrastructure access-list which will protect all devices with IP addresses in the infrastructure IP address range: IPv4 example: !--- Anti-spoofing entries are shown here. !--- Deny special-use address sources. !--- Refer to RFC 3330 for additional special use addresses. access-list 110 deny ip host 0.0.0.0 any access-list 110 deny ip 127.0.0.0 0.255.255.255 any access-list 110 deny ip 192.0.2.0 0.0.0.255 any access-list 110 deny ip 224.0.0.0 31.255.255.255 any !--- Filter RFC 1918 space. access-list 110 deny ip 10.0.0.0 0.255.255.255 any access-list 110 deny ip 172.16.0.0 0.15.255.255 any access-list 110 deny ip 192.168.0.0 0.0.255.255 any !--- Deny your space as source from entering your AS. !--- Deploy only at the AS edge. access-list 110 deny ip YOUR_CIDR_BLOCK any !--- Permit BGP. access-list 110 permit tcp host bgp_peer host router_ip eq bgp access-list 110 permit tcp host bgp_peer eq bgp host router_ip !--- Deny access to internal infrastructure addresses. access-list 110 deny ip any INTERNAL_INFRASTRUCTURE_ADDRESSES !--- Permit transit traffic. access-list 110 permit ip any any IPv6 example: !--- Configure the access-list. ipv6 access-list iacl !--- Deny your space as source from entering your AS. !--- Deploy only at the AS edge. deny ipv6 YOUR_CIDR_BLOCK_IPV6 any !--- Permit multiprotocol BGP. permit tcp host bgp_peer_ipv6 host router_ipv6 eq bgp permit tcp host bgp_peer_ipv6 eq bgp host router_ipv6 !--- Deny access to internal infrastructure addresses. deny ipv6 any INTERNAL_INFRASTRUCTURE_ADDRESSES_IPV6 !--- Permit transit traffic. permit ipv6 any any The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper can be obtained at the following link http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a0… Cisco IOS Embedded Event Manager +------------------------------- It is possible to detect blocked interface queues with a Cisco IOS Embedded Event Manager (EEM) policy. EEM provides event detection and reaction capabilities on a Cisco IOS device. EEM can alert administrators of blocked interfaces with email, a syslog message, or a Simple Network Management Protocol (SNMP) trap. A sample EEM policy that uses syslog to alert administrators of blocked interfaces is available at Cisco Beyond, an online community dedicated to EEM. A sample script is available at the following link: http://forums.cisco.com/eforum/servlet/EEM?page=eem&fn=script&scriptId=981 More information about EEM is available from Cisco.com at the following link: http://www.cisco.com/en/US/products/ps6815/products_ios_protocol_group_home… Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt(a)cisco.com or security-alert(a)cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac(a)cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. This vulnerability was reported to Cisco by a customer. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce(a)cisco.com * first-bulletins(a)lists.first.org * bugtraq(a)securityfocus.com * vulnwatch(a)vulnwatch.org * cisco(a)spot.colorado.edu * cisco-nsp(a)puck.nether.net * full-disclosure(a)lists.grok.org.uk * comp.dcom.sys.cisco(a)newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2009-Mar-25 | public | | | | release | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.… This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAknKUa8ACgkQ86n/Gc8U/uBD0ACfYblb5Nscx1zIWMLeihiaZAe7 TtsAoIGgf8/ubiolVwSDmu/tCTgH8skm =YxAj -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software Secure Copy Privilege Escalation Vulnerability
by Cisco Systems Product Security Incident Response Team 25 Mar '09

25 Mar '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Secure Copy Privilege Escalation Vulnerability Advisory ID: cisco-sa-20090325-scp http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml Revision 1.0 For Public Release 2009 March 25 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= The server side of the Secure Copy (SCP) implementation in Cisco IOS software contains a vulnerability that could allow authenticated users with an attached command-line interface (CLI) view to transfer files to and from a Cisco IOS device that is configured to be an SCP server, regardless of what users are authorized to do, per the CLI view configuration. This vulnerability could allow valid users to retrieve or write to any file on the device's file system, including the device's saved configuration and Cisco IOS image files, even if the CLI view attached to the user does not allow it. This configuration file may include passwords or other sensitive information. The Cisco IOS SCP server is an optional service that is disabled by default. CLI views are a fundamental component of the Cisco IOS Role-Based CLI Access feature, which is also disabled by default. Devices that are not specifically configured to enable the Cisco IOS SCP server, or that are configured to use it but do not use role-based CLI access, are not affected by this vulnerability. This vulnerability does not apply to the Cisco IOS SCP client feature. Cisco has released free software updates that address this vulnerability. There are no workarounds available for this vulnerability apart from disabling either the SCP server or the CLI view feature if these services are not required by administrators. This advisory is posted at the following link: http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml Note: The March 25, 2009, Cisco IOS Security Advisory bundled publication includes eight Security Advisories. All of the advisories address vulnerabilities in Cisco IOS Software. Each advisory lists the releases that correct the vulnerability or vulnerabilities in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published in Cisco Security Advisories on March 25, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml Individual publication links are listed below: * Cisco IOS cTCP Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml * Cisco IOS Software Multiple Features IP Sockets Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml * Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml * Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml * Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Affected Products ================= Vulnerable Products +------------------ Cisco devices running an affected Cisco IOS software release, configured to offer SCP server functionality, and configured to use role-based ACL access are affected by this issue. A device running a vulnerable Cisco IOS software release is affected if its configuration is similar to the following: parser view <view name> <Definition of the CLI view> ! username <user ID> view <view name> secret <some secret> ! ip scp server enable In the above configuration snippet, the parser view command defines a view that specifies what commands users in that view can execute. The username command defines a local user and attaches, via the view keyword, the previously defined view to the user. And finally, the ip scp server enable command enables the Cisco IOS SCP server. The absence of the username command does not guarantee that the device's configuration is not affected by this vulnerability because the name of a CLI view can be supplied by means of an Authentication, Authorization, and Accounting (AAA) server by using the cli-view-name attribute. Note: The CLI view attached to a user can be supplied by a AAA server. When inspecting a device's configuration to determine if it is affected by this vulnerability it is better to check if the SCP service is enabled (ip scp server enabled command) and whether there are any CLI views defined (parser view command). The Cisco IOS SCP server and role-based CLI access features are disabled by default. The SCP server functionality is only available on encryption-capable images. Encryption-capable images are those that contain either a "k8" or "k9" in the image name, for example, "C7200-ADVSECURITYK9-M". Devices that do not run encryption-capable images are not vulnerable. If a device is running an encryption-capable image, the presence in the configuration of the ip scp server enable command, the existence of CLI views (parser view command), and whether there are users (local or remote) attached to these views will determine if the device is affected. To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the show version command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the show version command or may provide different output. The following example identifies a Cisco product that is running Cisco IOS Software Release 12.3(26) with an installed image name of C2500-IS-L: Router#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by cisco Systems, Inc. Compiled Mon 17-Mar-08 14:39 by dchih !--- output truncated The following example identifies a Cisco product that is running Cisco IOS Software Release 12.4(20)T with an installed image name of C1841-ADVENTERPRISEK9-M: Router#show version Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jul-08 20:25 by prod_rel_team !--- output truncated Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS Reference Guide" at the following link: http://www.cisco.com/warp/public/620/1.html Cisco IOS XE Software is also affected by this vulnerability. Products Confirmed Not Vulnerable +-------------------------------- Cisco devices that do not run Cisco IOS software are not affected. Cisco IOS devices that do not have the SCP server feature enabled, or that make use of the feature but do not have the role-based CLI feature enabled, are not affected. Cisco IOS XR Software is not affected. No other Cisco products are currently known to be affected by this vulnerability. Details ======= SCP is a protocol similar to the Remote Copy (RCP) protocol, which allows the transfer of files between systems. The main difference between SCP and RCP is that in SCP, all aspects of the file transfer session, including authentication, occur in encrypted form, which makes SCP a more secure alternative than RCP. SCP relies on the Secure Shell (SSH) protocol, which uses TCP port 22 by default. The Role-Based CLI Access feature allows the network administrator to define "views". Views are sets of operational commands and configuration capabilities that provide selective or partial access to Cisco IOS software EXEC and configuration (Config) mode commands. Views restrict user access to Cisco IOS command-line interface (CLI) and configuration information; that is, a view can define what commands are accepted and what configuration information is visible. For more information about the Role-Based CLI Access feature, reference http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gtclivws.html The server side of the SCP implementation in Cisco IOS software contains a vulnerability that allows authenticated users with an attached command-line interface (CLI) view to transfer files to and from a Cisco IOS device that is configured to be a SCP server, regardless of what users are authorized to do, per the CLI view configuration. This vulnerability could allow authenticated users to retrieve or write to any file on the device's file system, including the device's saved configuration and Cisco IOS image files. This configuration file may include passwords or other sensitive information. In the affected configuration presented in the Affected Products section, users confined to a CLI view can elevate their privileges by using SCP to write to the device's configuration. Note that a view can be attached to a user when defining the user in the local database (via the username <user name> view ... command), or by passing the attribute cli-view-name from an AAA server. This vulnerability does not allow for authentication bypass; login credentials are verified and access is only granted if a valid username and password is provided. This vulnerability may cause authorization to be bypassed. This vulnerability is documented in the Cisco Bug ID CSCsv38166 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-0637. Vulnerability Scoring Details ============================== Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsv38166 - SCP + views (role-based CLI) allows privilege escalation CVSS Base Score - 9.0 Access Vector - Network Access Complexity - Low Authentication - Single Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 7.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability described in this advisory may allow valid but unauthorized users to retrieve or write to any file on the device's file system, including the device's saved configuration and Cisco IOS image files. This configuration file may include passwords or other sensitive information. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. +-------------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+------------------------------------------------------| | Affected | | Recommended | | 12.0-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.0 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.1-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.1 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.2-Based | First Fixed Release | Release | | Releases | | | |------------+------------------------------------+-----------------| | 12.2 | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2B | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2BC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2BW | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2BX | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2BY | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2BZ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2CX | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2CY | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2CZ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2DA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2DD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2DX | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2EW | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2EWA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2EX | Vulnerable; migrate to any release | 12.2(44)SE6 | | | in 12.2SEG | | |------------+------------------------------------+-----------------| | 12.2EY | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+------------------------------------+-----------------| | 12.2EZ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2FX | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2FY | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2FZ | Not Vulnerable | | |------------+------------------------------------+-----------------| | | | 12.2(33)SRC4; | | 12.2IRA | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+------------------------------------+-----------------| | | | 12.2(33)SRC4; | | 12.2IRB | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+------------------------------------+-----------------| | 12.2IXA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2IXB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2IXC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2IXD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2IXE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2IXF | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2IXG | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2JA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2JK | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2MB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2MC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2S | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SB | 12.2(33)SB4 | 12.2(33)SB4 | |------------+------------------------------------+-----------------| | 12.2SBC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SCA | Vulnerable; first fixed in 12.2SCB | 12.2(33)SCB1 | |------------+------------------------------------+-----------------| | 12.2SCB | 12.2(33)SCB1 | 12.2(33)SCB1 | |------------+------------------------------------+-----------------| | | 12.2(50)SE | | | 12.2SE | | 12.2(44)SE6 | | | 12.2(44)SE6 | | |------------+------------------------------------+-----------------| | 12.2SEA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SEB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SEC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SED | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SEE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SEF | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SEG | Not Vulnerable | | |------------+------------------------------------+-----------------| | | 12.2(52)SG; Available on | 12.2(52)SG; | | 12.2SG | 15-MAY-2009 | Available on | | | | 15-MAY-2009 | |------------+------------------------------------+-----------------| | 12.2SGA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SL | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SM | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SO | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SQ | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.2SRA | Not Vulnerable | | |------------+------------------------------------+-----------------| | | | 12.2(33)SRC4; | | | | Available on | | | | 18-MAY-2009 | | 12.2SRB | Vulnerable; first fixed in 12.2SRC | | | | | 12.2(33)SRB5a; | | | | Available on | | | | 3-April-2009 | |------------+------------------------------------+-----------------| | | 12.2(33)SRC4; Available on | 12.2(33)SRC4; | | 12.2SRC | 18-MAY-2009 | Available on | | | | 18-MAY-2009 | |------------+------------------------------------+-----------------| | 12.2SRD | 12.2(33)SRD1 | 12.2(33)SRD1 | |------------+------------------------------------+-----------------| | 12.2STE | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.2SU | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SV | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SVA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SVC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SVD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SVE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SW | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SX | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SXA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SXB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SXD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SXE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SXF | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SXH | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SXI | 12.2(33)SXI1 | 12.2(33)SXI1 | |------------+------------------------------------+-----------------| | 12.2SY | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2SZ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2T | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2TPC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XF | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XG | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XH | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XI | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XJ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XK | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XL | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XM | Not Vulnerable | | |------------+------------------------------------+-----------------| | | | 12.2(33)SB4 | | | | | | | | 12.2(33)SRD1 | | 12.2XN | Vulnerable; first fixed in 12.2SRC | | | | | 12.2(33)SRC4; | | | | Available on | | | | 18-MAY-2009 | |------------+------------------------------------+-----------------| | | | 12.2(33)SRD1 | | | | | | 12.2XNA | Vulnerable; first fixed in 12.2SRD | 12.2(33)SRC4; | | | | Available on | | | | 18-MAY-2009 | |------------+------------------------------------+-----------------| | 12.2XNB | 12.2(33)XNB3 | 12.2(33)XNB3 | |------------+------------------------------------+-----------------| | 12.2XNC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XO | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XQ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XR | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XS | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XT | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XU | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XV | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2XW | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YF | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YG | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YH | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YJ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YK | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YL | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YM | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YN | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YO | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YP | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YQ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YR | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YS | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YT | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YU | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YV | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YW | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YX | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YY | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2YZ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZF | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZG | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZH | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZJ | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZL | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZP | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZU | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZX | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZY | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.2ZYA | Not Vulnerable | | |------------+------------------------------------+-----------------| | Affected | | Recommended | | 12.3-Based | First Fixed Release | Release | | Releases | | | |------------+------------------------------------+-----------------| | 12.3 | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3B | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3BC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3BW | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3EU | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3JA | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.3JEA | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.3JEB | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.3JEC | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3JK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3JL | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3JX | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3T | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3TPC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3VA | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.3XA | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3XB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3XC | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3XD | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3XE | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.3XF | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3XI | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+------------------------------------+-----------------| | 12.3XJ | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XL | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(18e) | | | | | | 12.3XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3XW | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XX | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3XY | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3XZ | Not Vulnerable | | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YD | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3YF | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YH | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YI | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3YM | 12.3(14)YM13 | 12.3(14)YM13 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3YU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.3YX | 12.3(14)YX14 | 12.3(14)YX14 | |------------+------------------------------------+-----------------| | 12.3YZ | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.3ZA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+------------------------------------+-----------------| | | 12.4(18e) | 12.4(18e) | | | | | | 12.4 | 12.4(23a); Available on | 12.4(23a); | | | 30-APR-2009 | Available on | | | | 30-APR-2009 | |------------+------------------------------------+-----------------| | 12.4JA | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4JDA | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4JK | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4JL | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4JMA | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4JMB | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4JX | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4MD | 12.4(11)MD7 | 12.4(11)MD7 | |------------+------------------------------------+-----------------| | 12.4MR | 12.4(19)MR2 | 12.4(19)MR2 | |------------+------------------------------------+-----------------| | 12.4SW | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | | 12.4(24)T | | | | | 12.4(22)T1 | | | 12.4(20)T2 | | | 12.4T | | 12.4(15)T9; | | | 12.4(22)T1 | Available on | | | | 29-APR-2009 | | | 12.4(15)T9; Available on | | | | 29-APR-2009 | | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XB | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | 12.4(4)XD12; Available on | 12.4(4)XD12; | | 12.4XD | 27-MAR-2009 | Available on | | | | 27-MAR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XE | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | 12.4(20)T2 | | | 12.4XG | | 12.4(15)T9; | | | 12.4(22)T1 | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | Releases prior to 12.4(15)XL4 are | | | 12.4XL | vulnerable, release 12.4(15)XL4 | 12.4(15)XL4 | | | and later are not vulnerable; | | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.4XN | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4XP | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4XQ | 12.4(15)XQ2 | 12.4(15)XQ2 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XR | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.4XV | Vulnerable; contact TAC | | |------------+------------------------------------+-----------------| | 12.4XW | 12.4(11)XW10 | 12.4(11)XW10 | |------------+------------------------------------+-----------------| | | | 12.4(22)T1 | | | | | | 12.4XY | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+------------------------------------+-----------------| | 12.4XZ | 12.4(15)XZ2 | 12.4(15)XZ2 | |------------+------------------------------------+-----------------| | 12.4YA | 12.4(20)YA2 | 12.4(20)YA3 | |------------+------------------------------------+-----------------| | 12.4YB | Not Vulnerable | | |------------+------------------------------------+-----------------| | 12.4YD | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== If the Cisco IOS SCP server functionality is not needed then the vulnerability described in this document can be mitigated by disabling the SCP server or the CLI view feature. The SCP server can be disabled by executing the following command in global configuration mode: no ip scp server enable If the SCP server cannot be disabled due to operational concerns, then no workarounds exist. The risk posed by this vulnerability can be mitigated by following the best practices detailed in "Cisco Guide to Harden Cisco IOS Devices" at http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a008… Please refer to the Obtaining Fixed Software section of this advisory for appropriate solutions to resolve this vulnerability. Due to the nature of this vulnerability, networking best practices like access control lists (ACLs) and Control Plane Policing (CoPP) that restrict access to a device to certain IP addresses or subnetworks may not be effective. If access is already granted to a specific IP address or subnetwork, a user with low privileges will be able to establish an SCP session with the device, which would allow the user to exploit this vulnerability. Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt(a)cisco.com or security-alert(a)cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac(a)cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. This vulnerability was reported to Cisco by Kevin Graham. Cisco would like to thank Mr. Graham for reporting this vulnerability and working with us towards coordinated disclosure of the vulnerability. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce(a)cisco.com * first-bulletins(a)lists.first.org * bugtraq(a)securityfocus.com * vulnwatch(a)vulnwatch.org * cisco(a)spot.colorado.edu * cisco-nsp(a)puck.nether.net * full-disclosure(a)lists.grok.org.uk * comp.dcom.sys.cisco(a)newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2009-March-25 | public | | | | release | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.… This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAknKUbQACgkQ86n/Gc8U/uBoggCdGbEAh9pGrV/ApbhENou5MF4M vTIAn03h9J//T0V6BZBxwwS2hKs/JIXi =JGEE -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability
by Cisco Systems Product Security Incident Response Team 25 Mar '09

25 Mar '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability Advisory ID: cisco-sa-20090325-tcp http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml Revision 1.0 For Public Release 2009 March 25 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= Cisco IOS Software contains a vulnerability in multiple features that could allow an attacker to cause a denial of service (DoS) condition on the affected device. A sequence of specially crafted TCP packets can cause the vulnerable device to reload. Cisco has released free software updates that address this vulnerability. Several mitigation strategies are outlined in the workarounds section of this advisory. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml Note: The March 25, 2009, Cisco IOS Security Advisory bundled publication includes eight Security Advisories. All of the advisories address vulnerabilities in Cisco IOS Software. Each advisory lists the releases that correct the vulnerability or vulnerabilities in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published in Cisco Security Advisories on March 25, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml Individual publication links are listed below: * Cisco IOS cTCP Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml * Cisco IOS Software Multiple Features IP Sockets Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml * Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml * Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml * Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Affected Products ================= Vulnerable Products +------------------ Devices running affected versions of Cisco IOS Software and Cisco IOS XE Software are affected when configured to use any of the following features within Cisco IOS: * Airline Product Set (ALPS) * Serial Tunnel Code (STUN) and Block Serial Tunnel Code (BSTUN) * Native Client Interface Architecture support (NCIA) * Data-link switching (DLSw) * Remote Source-Route Bridging (RSRB) * Point to Point Tunneling Protocol (PPTP) * X.25 for Record Boundary Preservation (RBP) * X.25 over TCP (XOT) * X.25 Routing Information on how to determine whether an affected feature is enabled on a device are provided in the Details section of this advisory. To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the "show version" command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the "show version" command or may provide different output. The following example identifies a Cisco product that is running Cisco IOS Software Release 12.3(26) with an installed image name of C2500-IS-L: Router#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by cisco Systems, Inc. Compiled Mon 17-Mar-08 14:39 by dchih <output truncated> The following example shows a product that is running Cisco IOS Software Release 12.4(20)T with an image name of C1841-ADVENTERPRISEK9-M: Router#show version Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jul-08 20:25 by prod_rel_team <output truncated> Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS Reference Guide" at the following link: http://www.cisco.com/warp/public/620/1.html . Products Confirmed Not Vulnerable +-------------------------------- The following product and feature have been confirmed not vulnerable: * Cisco IOS XR Software * BGP is not affected No other Cisco products or features configured within Cisco IOS Software are currently known to be affected by this vulnerability. Details ======= Completion of the 3-way handshake to the associated TCP port number (s) of any of the features outlined below is required in order for the vulnerability to be successfully exploited. Airline Product Set (ALPS) +------------------------- Devices configured for ALPS are vulnerable. The default TCP listening ports for ALPS are 350 and 10000. The following example shows a vulnerable ALPS configuration: alps local-peer <ip address> Further information about ALPS is available in "Cisco IOS Bridging and IBM Networking Configuration Guide, Release 12.2 - Configuring the Airline Product Set" at the following link http://www.cisco.com/en/US/docs/ios/12_2/ibm/configuration/guide/bcfalps_ps… Serial Tunnel Code (STUN) and Block Serial Tunneling (BSTUN) +----------------------------------------------------------- Devices configured for either STUN or BSTUN are vulnerable. The default listening TCP ports for STUN are 1990,1991 1992 and 1994. The default listening TCP ports for BSTUN are 1963, 1976, 1977, 1978 and 1979 The following example shows a vulnerable STUN configuration: interface serial 0/0/0 encapsulation stun The following example shows a vulnerable BSTUN configuration: interface serial 0/0/0 encapsulation bstun Further information about STUN and BSTUN is available in "Cisco IOS Bridging and IBM Networking Configuration Guide, Release 12.2 - Configuring Serial Tunnel and Block Serial Tunnel" at the following link http://www.cisco.com/en/US/docs/ios/12_2/ibm/configuration/guide/bcfstun_ps… Native Client Interface Architecture support (NCIA) +-------------------------------------------------- Devices configured for NCIA are vulnerable, because of the underlying transport they will use. The default listening TCP ports will be dependent on the protocol used with NCIA, such as RSRB or DSLw. The following examples shows a vulnerable configuration: ncia server 1 10.66.91.138 0000.1111.2222 2222.2222.2222 1 Further information about NCIA is available in "Cisco IOS Bridging and IBM Networking Configuration Guide, Release 12.4 - Configuring NCIA Client/Server" at the following link http://www.cisco.com/en/US/docs/ios/bridging/configuration/guide/br_ncia_cl… Data-link switching (DLSw) +------------------------- Devices configured for DLSw are vulnerable. The default listening TCP ports for DSLw are 2065, 2067, 1981, 1982 and 1983. The following example shows a vulnerable configuration: dlsw local-peer peer-id <ip address> Devices configured with either FST Encapsulation or Direct Encapsulation are still vulnerable as the affected TCP ports are opened by the "dslw local-peer peer-id ip address" command. Further information about DLSw is available in "Cisco IOS Bridging and IBM Networking Configuration Guide, Release 12.4 - Configuring Data-Link Switching Plus" at the following link http://www.cisco.com/en/US/docs/ios/bridging/configuration/guide/br_dlsw_pl… Remote Source-Route Bridging (RSRB) +---------------------------------- Devices configured for RSRB Using IP Encapsulation over a TCP connection are vulnerable. The default listening TCP ports for RSRB are 1996,1987, 1988 and 1989. The following example shows a vulnerable configuration: source-bridge ring-group 10 source-bridge remote-peer 10 tcp <ip address> Devices configured with either RSRB Using Direct Encapsulation or RSRB Using IP Encapsulation over an FST Connection are not affected. Further information about RSRB is available in "Cisco IOS Bridging and IBM Networking Configuration Guide, Release 12.2 - Configuring Remote Source-Route Bridging" at the following link http://www.cisco.com/en/US/docs/ios/12_2/ibm/configuration/guide/bcfrsrb_ps… Point to Point Tunneling Protocol (PPTP) +--------------------------------------- Devices configured for PPTP are vulnerable. The default listening TCP port for PPTP is 1723. The following examples shows a vulnerable configuration: vpdn enable ! vpdn-group pptp ! Default PPTP VPDN group accept-dialin protocol pptp virtual-template 1 Or vpdn enable ! vpdn-group L2_Tunneling ! Default L2TP VPDN group ! Default PPTP VPDN group accept-dialin protocol any virtual-template 1 Further information about PPTP is available in "Cisco IOS VPDN Configuration Guide, Release 12.4 - Configuring Client-Initiated Dial-In VPDN Tunneling" at the following link http://www.cisco.com/en/US/docs/ios/vpdn/configuration/guide/client_init_di… X.25 Record Boundary Preservation (RBP) +-------------------------------------- Devices configured for RBP are vulnerable. The listening TCP port is configured with the "local port port_number" CLI command, as shown in the next examples. The following examples shows vulnerable configurations. The first leverages switched virtual circuits (SVC): interface Serial1/0 x25 map rbp 1111 local port <port_number> The second example, leverages a permanent virtual circuit (PVC): interface Serial1/0 x25 map pvc <pvc_number> rbp local port <port_number> Further information about RBP is available in "Cisco IOS Wide-Area Networking Configuration Guide, Release 12.4 - X.25 Record Boundary Preservation for Data Communications Networks" at the following link http://www.cisco.com/en/US/docs/ios/wan/configuration/guide/wan_x25_rbp_dcn… X.25 over TCP (XOT) +------------------ Devices configured for XOT are vulnerable. The default listening TCP port for XOT is 1998. The following example shows a vulnerable configuration. xot access-group 1 and a corresponding access-list 1. Further information about XOT is available in "Cisco IOS Wide-Area Networking Configuration Guide, Release 12.4 - X.25 over TCP Profiles" at the following link http://www.cisco.com/en/US/docs/ios/wan/configuration/guide/wan_x25otcp_pro… X25 Routing +---------- Devices configured with X25 are vulnerable. The default listening TCP port for X25 Routing is 1998. The following example shows a vulnerable configuration. x25 routing Further information about X25 is available in "Cisco IOS Wide-Area Networking Configuration Guide, Release 12.4 - Configuring X.25 and LAPB" at the following link http://www.cisco.com/en/US/docs/ios/wan/configuration/guide/wan_cfg_x25_lap… This vulnerability is documented in the following Cisco Bug ID: CSCsr29468 and has been assigned the Common Vulnerabilities and Exposures (CVE) identifier CVE-2009-0629. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerability in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsr29468: Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of this vulnerability will cause the device to reload. Repeated attempts to exploit this vulnerability could result in a sustained DoS condition. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. +-------------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+------------------------------------------------------| | Affected | | | | 12.0-Based | First Fixed Release | Recommended Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.0 based releases | |-------------------------------------------------------------------| | Affected | | | | 12.1-Based | First Fixed Release | Recommended Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.1 based releases | |-------------------------------------------------------------------| | Affected | | | | 12.2-Based | First Fixed Release | Recommended Release | | Releases | | | |------------+-----------------------------+------------------------| | 12.2 | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2B | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2BC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2BW | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2BX | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2BY | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2BZ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2CX | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2CY | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2CZ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2DA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2DD | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2DX | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2EW | Vulnerable; first fixed in | 12.2(31)SGA9 | | | 12.2SG | | |------------+-----------------------------+------------------------| | 12.2EWA | Vulnerable; first fixed in | 12.2(31)SGA9 | | | 12.2SG | | |------------+-----------------------------+------------------------| | | Releases prior to 12.2(44) | | | | EX are vulnerable, release | | | 12.2EX | 12.2(44)EX and later are | 12.2(44)SE6 | | | not vulnerable; first fixed | | | | in 12.2SE | | |------------+-----------------------------+------------------------| | 12.2EY | 12.2(44)EY | 12.2(44)SE6 | |------------+-----------------------------+------------------------| | 12.2EZ | Vulnerable; first fixed in | 12.2(44)SE6 | | | 12.2SE | | |------------+-----------------------------+------------------------| | 12.2FX | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2FY | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2FZ | Vulnerable; first fixed in | 12.2(44)SE6 | | | 12.2SE | | |------------+-----------------------------+------------------------| | | Vulnerable; first fixed in | 12.2(33)SRC4; | | 12.2IRA | 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-----------------------------+------------------------| | | Vulnerable; first fixed in | 12.2(33)SRC4; | | 12.2IRB | 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-----------------------------+------------------------| | 12.2IXA | Vulnerable; migrate to any | 12.2(18)IXH; Available | | | release in 12.2IXH | on 31-MAR-2009 | |------------+-----------------------------+------------------------| | 12.2IXB | Vulnerable; migrate to any | 12.2(18)IXH; Available | | | release in 12.2IXH | on 31-MAR-2009 | |------------+-----------------------------+------------------------| | 12.2IXC | Vulnerable; migrate to any | 12.2(18)IXH; Available | | | release in 12.2IXH | on 31-MAR-2009 | |------------+-----------------------------+------------------------| | 12.2IXD | Vulnerable; migrate to any | 12.2(18)IXH; Available | | | release in 12.2IXH | on 31-MAR-2009 | |------------+-----------------------------+------------------------| | 12.2IXE | Vulnerable; migrate to any | 12.2(18)IXH; Available | | | release in 12.2IXH | on 31-MAR-2009 | |------------+-----------------------------+------------------------| | 12.2IXF | Vulnerable; migrate to any | 12.2(18)IXH; Available | | | release in 12.2IXH | on 31-MAR-2009 | |------------+-----------------------------+------------------------| | 12.2IXG | Vulnerable; migrate to any | 12.2(18)IXH; Available | | | release in 12.2IXH | on 31-MAR-2009 | |------------+-----------------------------+------------------------| | 12.2JA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2JK | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2MB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2MC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2S | Vulnerable; first fixed in | 12.2(33)SB4 | | | 12.2SB | | |------------+-----------------------------+------------------------| | | 12.2(33)SB3 | | | | | | | 12.2SB | 12.2(28)SB13 | 12.2(33)SB4 | | | | | | | 12.2(31)SB14 | | |------------+-----------------------------+------------------------| | 12.2SBC | Vulnerable; first fixed in | 12.2(33)SB4 | | | 12.2SB | | |------------+-----------------------------+------------------------| | 12.2SCA | Vulnerable; first fixed in | 12.2(33)SCB1 | | | 12.2SCB | | |------------+-----------------------------+------------------------| | 12.2SCB | 12.2(33)SCB1 | 12.2(33)SCB1 | |------------+-----------------------------+------------------------| | | 12.2(46)SE2 | | | | | | | 12.2SE | 12.2(50)SE | 12.2(44)SE6 | | | | | | | 12.2(44)SE5 | | |------------+-----------------------------+------------------------| | 12.2SEA | Vulnerable; first fixed in | 12.2(44)SE6 | | | 12.2SE | | |------------+-----------------------------+------------------------| | 12.2SEB | Vulnerable; first fixed in | 12.2(44)SE6 | | | 12.2SE | | |------------+-----------------------------+------------------------| | 12.2SEC | Vulnerable; first fixed in | 12.2(44)SE6 | | | 12.2SE | | |------------+-----------------------------+------------------------| | 12.2SED | Vulnerable; first fixed in | 12.2(44)SE6 | | | 12.2SE | | |------------+-----------------------------+------------------------| | 12.2SEE | Vulnerable; first fixed in | 12.2(44)SE6 | | | 12.2SE | | |------------+-----------------------------+------------------------| | 12.2SEF | Not Vulnerable | | |------------+-----------------------------+------------------------| | | Releases prior to 12.2(25) | | | | SEG4 are vulnerable, | | | 12.2SEG | release 12.2(25)SEG4 and | 12.2(44)SE6 | | | later are not vulnerable; | | | | first fixed in 12.2SE | | |------------+-----------------------------+------------------------| | 12.2SG | 12.2(50)SG | 12.2(52)SG; Available | | | | on 15-MAY-2009 | |------------+-----------------------------+------------------------| | 12.2SGA | 12.2(31)SGA9 | 12.2(31)SGA9 | |------------+-----------------------------+------------------------| | 12.2SL | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2SM | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SO | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SQ | Not Vulnerable | | |------------+-----------------------------+------------------------| | | Vulnerable; first fixed in | 12.2(33)SRC4; | | 12.2SRA | 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-----------------------------+------------------------| | | | 12.2(33)SRB5a; | | | | Available on | | 12.2SRB | Vulnerable; first fixed in | 3-April-2009 12.2(33) | | | 12.2SRC | SRC4; Available on | | | | 18-MAY-2009 12.2(33) | | | | SRD1 | |------------+-----------------------------+------------------------| | | | 12.2(33)SRC4; | | 12.2SRC | 12.2(33)SRC3 | Available on | | | | 18-MAY-2009 12.2(33) | | | | SRD1 | |------------+-----------------------------+------------------------| | 12.2SRD | 12.2(33)SRD1 | 12.2(33)SRD1 | |------------+-----------------------------+------------------------| | 12.2STE | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SU | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2SV | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SVA | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SVC | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SVD | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SVE | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2SW | Vulnerable; migrate to any | | | | release in 12.4SW | | |------------+-----------------------------+------------------------| | 12.2SX | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2SXA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2SXB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2SXD | Vulnerable; first fixed in | 12.2(18)SXF16 | | | 12.2SXF | | |------------+-----------------------------+------------------------| | 12.2SXE | Vulnerable; first fixed in | 12.2(18)SXF16 | | | 12.2SXF | | |------------+-----------------------------+------------------------| | 12.2SXF | 12.2(18)SXF16 | 12.2(18)SXF16 | |------------+-----------------------------+------------------------| | | 12.2(33)SXH5; Available on | 12.2(33)SXH5; | | 12.2SXH | 20-APR-2009 | Available on | | | | 20-APR-2009 | |------------+-----------------------------+------------------------| | 12.2SXI | 12.2(33)SXI1 | 12.2(33)SXI1 | |------------+-----------------------------+------------------------| | 12.2SY | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2SZ | Vulnerable; first fixed in | 12.2(33)SB4 | | | 12.2SB | | |------------+-----------------------------+------------------------| | 12.2T | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2TPC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XD | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XE | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XF | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XG | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XH | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XI | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XJ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XK | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XL | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XM | Not Vulnerable | | |------------+-----------------------------+------------------------| | | Vulnerable; first fixed in | 12.2(33)SB4 | | 12.2XN | 12.2SRC | | | | | 12.2(33)SRD1 | |------------+-----------------------------+------------------------| | 12.2XNA | Vulnerable; first fixed in | 12.2(33)SRD1 | | | 12.2SRD | | |------------+-----------------------------+------------------------| | 12.2XNB | 12.2(33)XNB1 | 12.2(33)XNB3 | |------------+-----------------------------+------------------------| | 12.2XNC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XO | 12.2(46)XO | 12.2(46)XO | |------------+-----------------------------+------------------------| | 12.2XQ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XR | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XS | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XT | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XU | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XV | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2XW | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YD | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YE | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YF | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YG | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YH | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YJ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YK | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YL | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YM | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YN | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YO | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YP | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YQ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YR | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YS | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YT | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YU | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YV | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YW | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YX | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YY | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2YZ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZD | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZE | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZF | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZG | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZH | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZJ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZL | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.2ZP | Not Vulnerable | | |------------+-----------------------------+------------------------| | | Vulnerable; first fixed in | 12.2(33)SXH5; | | 12.2ZU | 12.2SXH | Available on | | | | 20-APR-2009 | |------------+-----------------------------+------------------------| | 12.2ZX | Vulnerable; first fixed in | 12.2(33)SB4 | | | 12.2SB | | |------------+-----------------------------+------------------------| | 12.2ZY | Vulnerable; contact TAC | | |------------+-----------------------------+------------------------| | 12.2ZYA | 12.2(18)ZYA1 | 12.2(18)ZYA1 | |------------+-----------------------------+------------------------| | Affected | | | | 12.3-Based | First Fixed Release | Recommended Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.3 based releases | |-------------------------------------------------------------------| | Affected | | | | 12.4-Based | First Fixed Release | Recommended Release | | Releases | | | |------------+-----------------------------+------------------------| | 12.4 | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4JA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4JDA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4JK | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4JL | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4JMA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4JMB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4JX | Not Vulnerable | | |------------+-----------------------------+------------------------| | | 12.4(15)MD2 | | | | | | | 12.4MD | Releases prior to 12.4(11) | 12.4(11)MD7 | | | MD6 are not vulnerable, | | | | releases 12.4(15)MD and | | | | later are vulnerable. | | |------------+-----------------------------+------------------------| | | 12.4(19)MR1 | | | | | | | 12.4MR | Releases prior to 12.4(16) | 12.4(19)MR2 | | | MR2 are not vulnerable, | | | | releases 12.4(19)MR and | | | | later are vulnerable | | |------------+-----------------------------+------------------------| | 12.4SW | Not Vulnerable | | |------------+-----------------------------+------------------------| | | 12.4(22)T | | | | | 12.4(22)T1 | | 12.4T | 12.4(20)T2 | | | | | 12.4(15)T9; Available | | | Releases prior to 12.4(20)T | on 29-APR-2009 | | | are NOT vulnerable | | |------------+-----------------------------+------------------------| | 12.4XA | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XC | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XD | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XE | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XF | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XG | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XJ | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XK | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XL | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XM | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XN | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XP | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XQ | 12.4(15)XQ2 | 12.4(15)XQ2 | |------------+-----------------------------+------------------------| | | | 12.4(22)T1 | | 12.4XR | 12.4(15)XR4 | | | | | 12.4(15)T9; Available | | | | on 29-APR-2009 | |------------+-----------------------------+------------------------| | 12.4XT | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XV | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4XW | Not Vulnerable | | |------------+-----------------------------+------------------------| | | | 12.4(22)T1 | | 12.4XY | 12.4(15)XY4 | | | | | 12.4(15)T9; Available | | | | on 29-APR-2009 | |------------+-----------------------------+------------------------| | 12.4XZ | 12.4(15)XZ2 | 12.4(15)XZ2 | |------------+-----------------------------+------------------------| | 12.4YA | 12.4(20)YA2 | 12.4(20)YA3 | |------------+-----------------------------+------------------------| | 12.4YB | Not Vulnerable | | |------------+-----------------------------+------------------------| | 12.4YD | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== The following mitigations have been identified for this vulnerability, which may help protect an infrastructure until an upgrade to a fixed version of Cisco IOS software can be scheduled: Infrastructure Access Control Lists +---------------------------------- Although it is often difficult to block traffic that transits a network, it is possible to identify traffic that should never be allowed to target infrastructure devices and block that traffic at the border of networks. Infrastructure Access Control Lists (iACLs) are a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for these specific vulnerabilities. The iACL example below should be included as part of the deployed infrastructure access-list which will protect all devices with IP addresses in the infrastructure IP address range: !--- !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- Feature: ALPS !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 350 access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 10000 !--- !--- Deny ALPS TCP traffic from all other sources destined !--- to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 350 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 10000 !--- !--- Feature: STUN !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 1994 access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD range 1990 1992 !--- !--- Deny STUN TCP traffic from all other sources destined !--- to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 1994 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD range 1990 1992 !--- !--- Feature: BSTUN !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 1963 access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD range 1976 1979 !--- !--- Deny BSTUN TCP traffic from all other sources destined !--- to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 1963 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD range 1976 1979 !--- !--- Feature: NCIA !--- !--- !--- Leverage the underlying protocols, DLSw, RSRB, etc. !--- !--- !--- Feature: DLSW !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 2065 access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 2067 access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD range 1981 1983 !--- !--- Deny DLSW TCP traffic from all other sources destined !--- to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 2065 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 2067 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD range 1981 1983 !--- !--- Feature: RSRB !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD range 1987 1989 access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 1996 !--- !--- Deny RSRB TCP traffic from all other sources destined !--- to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD range 1987 1989 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 1996 !--- !--- Feature: PPTP !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 1723 !--- !--- Deny PPTP TCP traffic from all other sources destined !--- to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 1723 !--- !--- Feature: RBP !--- !--- RBP will listen for TCP connections on the configured port !--- as per "local port <port_number>". The following example !--- uses port 1055 !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 1055 !--- !--- Deny RBP traffic from all other sources destined !--- to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 1055 !--- !--- Feature: XOT and X.25 Routing !--- access-list 150 permit tcp TRUSTED_HOSTS WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 1998 !--- !--- Deny XOT and X25 TCP traffic from all other sources !--- destined to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 1998 !--- !--- Permit/deny all other Layer 3 and Layer 4 traffic in !--- accordance with existing security policies and !--- configurations Permit all other traffic to transit the !--- device. !--- access-list 150 permit ip any any !--- !--- Apply access-list to all interfaces (only one example !--- shown) !--- interface serial 2/0 ip access-group 150 in The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper can be obtained at the following link: http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a0… Receive ACLs (rACL) +------------------ For distributed platforms, Receive ACLs may be an option starting in Cisco IOS Software Versions 12.0(21)S2 for the 12000 (GSR), 12.0(24)S for the 7500, and 12.0(31)S for the 10720. The Receive ACL protects the device from harmful traffic before the traffic can impact the route processor. Receive ACLs are designed to only protect the device on which it is configured. On the 12000, 7500, and 10720, transit traffic is never affected by a receive ACL. Because of this, the destination IP address "any" used in the example ACL entries below only refer to the router's own physical or virtual IP addresses. Receive ACLs are considered a network security best practice, and should be considered as a long-term addition to good network security, as well as a workaround for this specific vulnerability. The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper can be obtained at the following link http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a0… The following is the receive path ACL written to permit this type of traffic from trusted hosts: !--- !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- !--- Permit ALPS traffic from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 350 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 10000 !--- !--- Deny ALPS traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 350 access-list 150 deny tcp any any eq 10000 !--- !--- Permit STUN traffic from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 1994 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any range 1990 1992 !--- !--- Deny STUN traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 1994 access-list 150 deny tcp any any eq range 1990 1992 !--- !--- Permit BSTUN traffic from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 1963 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any range 1976 1979 !--- !--- Deny BSTUN traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 1963 access-list 150 deny tcp any any eq range 1976 1979 !--- !--- Permit DLSw from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2065 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2067 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any range 1981 1983 !--- !--- Deny DLSw all other sources to the RP. !--- access-list 150 deny tcp any any eq 2065 access-list 150 deny tcp any any eq 2067 access-list 150 deny tcp any any range 1981 1983 !--- !--- Permit RSRB traffic from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 1996 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any range 1987 1989 !--- !--- Deny RSRB traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 1996 access-list 150 deny tcp any any range 1987 1989 !--- !--- Permit PPTP traffic from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 1723 !--- !--- Deny PPTP traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 1723 !--- !--- Permit RBP traffic from trusted hosts allowed to the RP. !--- RBP will listen for TCP connections on the configured port !--- as per "local port <port_number>". The following example !--- uses port 1055 !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 1055 !--- !--- Deny RBP traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 1055 !--- !--- Permit XOT and X.25 Routing traffic from trusted hosts allowed !--- to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 1998 !--- !--- Deny XOT and X.25 Routing traffic from all other sources to !--- the RP. !--- access-list 150 deny tcp any any eq 1998 !--- Permit all other traffic to the RP. !--- according to security policy and configurations. access-list 150 permit ip any any !--- Apply this access list to the 'receive' path. ip receive access-list 150 Control Plane Policing +--------------------- Control Plane Policing (CoPP) can be used to block the affected features TCP traffic access to the device. Cisco IOS software releases 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T support the CoPP feature. CoPP can be configured on a device to protect the management and control planes and minimize the risk and effectiveness of direct infrastructure attacks by explicitly permitting only authorized traffic that is sent to infrastructure devices in accordance with existing security policies and configurations. The CoPP example below should be included as part of the deployed CoPP that will protect all devices with IP addresses in the infrastructure IP address range. !--- !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- Feature: ALPS !--- access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 350 access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 10000 !--- !--- Permit ALPS traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 350 access-list 150 permit tcp any any eq 10000 !--- !--- Feature: STUN !--- access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 1994 access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any range 1990 1992 !--- !--- Permit STUN traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 1994 access-list 150 permit tcp any any range 1990 1992 !--- !--- Feature: BSTUN !--- access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 1963 access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any range 1976 1979 !--- !--- Permit BSTUN traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 1963 access-list 150 permit tcp any any range 1976 1979 !--- !--- Feature: NCIA !--- !--- Leverage the underlying protocols, DLSw, RSRB, etc. !--- !--- !--- Feature: DLSW !--- access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 2065 access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 2067 access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any range 1981 1983 !--- !--- Permit DLSW traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 2065 access-list 150 permit tcp any any eq 2067 access-list 150 permit tcp any any range 1981 1983 !--- !--- Feature: RSRB !--- access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any range 1987 1989 access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 1996 !--- !--- Permit RSRB traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any range 1987 1989 access-list 150 permit tcp any any eq 1996 !--- !--- Feature: PPTP !--- access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 1723 !--- !--- Permit PPTP traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 1723 !--- !--- Feature: RBP !--- !--- RBP will listen for TCP connections on the configured port !--- as per "local port <port_number>". The following example !--- uses port 1055 access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 1055 !--- !--- Permit RBP traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 1055 !--- !--- Feature: XOT and X.25 Routing !--- access-list 150 deny tcp TRUSTED_HOSTS WILDCARD any eq 1998 !--- !--- Permit XOT and X25 traffic sent to all IP addresses !--- configured on all interfaces of the affected device so !--- that it will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 1998 !--- !--- Permit (Police or Drop)/Deny (Allow) all other Layer3 and !--- Layer4 traffic in accordance with existing security policies !--- configurations for traffic that is authorized to be sent !--- and to infrastructure devices !--- Create a Class-Map for traffic to be policed by !--- the CoPP feature !--- class-map match-all drop-tcp-class match access-group 150 !--- !--- Create a Policy-Map that will be applied to the !--- Control-Plane of the device. !--- policy-map drop-tcp-traffic class drop-tcp-class drop !--- !--- Apply the Policy-Map to the !--- Control-Plane of the device !--- control-plane service-policy input drop-tcp-traffic In the above CoPP example, the access control list entries (ACEs) that match the potential exploit packets with the "permit" action result in these packets being discarded by the policy-map "drop" function, while packets that match the "deny" action (not shown) are not affected by the policy-map drop function. Please note that the policy-map syntax is different in the 12.2S and 12.0S Cisco IOS trains: policy-map drop-tcp-traffic class drop-tcp-class police 32000 1500 1500 conform-action drop exceed-action drop Additional information on the configuration and use of the CoPP feature can be found in the documents, "Control Plane Policing Implementation Best Practices" and "Cisco IOS Software Releases 12.2S - - Control Plane Policing" at the following links http://www.cisco.com/web/about/security/intelligence/coppwp_gs.html and http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html Additional mitigations that can be deployed on Cisco devices within the network are available in the "Cisco Applied Mitigation Bulletin" companion document for this advisory, at the following link http://www.cisco.com/warp/public/707/cisco-amb-20090325-tcp-and-ip.shtml Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt(a)cisco.com or security-alert(a)cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac(a)cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. This vulnerability was found by Cisco internal testing. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce(a)cisco.com * first-bulletins(a)lists.first.org * bugtraq(a)securityfocus.com * vulnwatch(a)vulnwatch.org * cisco(a)spot.colorado.edu * cisco-nsp(a)puck.nether.net * full-disclosure(a)lists.grok.org.uk * comp.dcom.sys.cisco(a)newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2009-March-25 | public | | | | release | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.… This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAknKUb8ACgkQ86n/Gc8U/uCp1gCfS6aMv74rf1bDoby1JcGRFsN3 hpYAn1Oqp7nQxPwBrtptF3WM42HgGdIk =NVYK -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software WebVPN and SSLVPN Vulnerabilities
by Cisco Systems Product Security Incident Response Team 25 Mar '09

25 Mar '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software WebVPN and SSLVPN Vulnerabilities Advisory ID: cisco-sa-20090325-webvpn http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Revision 1.0 For Public Release 2009 March 25 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= Cisco IOS software contains two vulnerabilities within the Cisco IOS WebVPN or Cisco IOS SSLVPN feature (SSLVPN) that can be remotely exploited without authentication to cause a denial of service condition. Both vulnerabilities affect both Cisco IOS WebVPN and Cisco IOS SSLVPN features: 1. Crafted HTTPS packet will crash device. 2. SSLVPN sessions cause a memory leak in the device. Cisco has released free software updates that address these vulnerabilities. There are no workarounds that mitigate these vulnerabilities. This advisory is posted at the following link: http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Note: The March 25, 2009, Cisco IOS Security Advisory bundled publication includes eight Security Advisories. All of the advisories address vulnerabilities in Cisco IOS Software. Each advisory lists the releases that correct the vulnerability or vulnerabilities in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published in Cisco Security Advisories on March 25, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml Individual publication links are listed below: * Cisco IOS cTCP Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml * Cisco IOS Software Multiple Features IP Sockets Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml * Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml * Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml * Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Affected Products ================= Vulnerable Products +------------------ Devices running affected versions of Cisco IOS software are affected if configured with SSLVPN. To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the "show version" command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the "show version" command or may provide different output. The following example identifies a Cisco product that is running Cisco IOS Software Release 12.3(26) with an installed image name of C2500-IS-L: Router#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by cisco Systems, Inc. Compiled Mon 17-Mar-08 14:39 by dchih <output truncated> The following example shows a product that is running Cisco IOS Software release 12.4(20)T with an image name of C1841-ADVENTERPRISEK9-M: Router#show version Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jul-08 20:25 by prod_rel_team <output truncated> Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS Reference Guide" at the following link: http://www.cisco.com/warp/public/620/1.html To determine that SSLVPN is enabled on your device, log in to the device and issue the command-line interface (CLI) command "show running-config | include webvpn". If the device returns any output this means that SSLVPN is configured on the device and the device may be vulnerable. Vulnerable configurations vary depending on whether the device is supporting Cisco IOS WebVPN (introduced in Release 12.3 (14)T) or Cisco IOS SSLVPNs (introduced in Release 12.4(6)T). The following methods describe how to confirm if the device is vulnerable: If the output from "show running-config | include webvpn" contains "webvpn enable" then the device is configured with the original Cisco IOS WebVPN. The only way to confirm the device is vulnerable is to examine the output of "show running-config" to confirm that webvpn is enabled via the command "webvpn enable" and that a "ssl trustpoint" has been configured. The following example shows a vulnerable device configured with Cisco IOS WebVPN: webvpn enable ! webvpn ssl trustpoint TP-self-signed-29742012 If the output from "show running-config | include webvpn" contains "webvpn gateway <word>" then the device is supporting the Cisco IOS SSLVPN feature. A device is vulnerable if it has the "inservice" command in at least one of the "webvpn gateway" sections. The following example shows a vulnerable device configured with Cisco IOS SSLVPN: Router# show running | section webvpn webvpn gateway Gateway ip address 10.1.1.1 port 443 ssl trustpoint Gateway-TP inservice ! Router# A device that supports the Cisco IOS SSLVPN is not vulnerable if it has no "webvpn gateways" configured or all the configured "webvpn gateways" contain the "no inservice" "webvpn gateway" command. Products Confirmed Not Vulnerable +-------------------------------- The following products are not affected by this vulnerability: * Cisco ASA 5500 Series Adaptive Security Appliances * Cisco IOS XR Software * Cisco IOS XE Software No other Cisco products are currently known to be affected by these vulnerabilities. Details ======= The Cisco SSLVPN feature provides remote access to enterprise sites by users from anywhere on the Internet. The SSLVPN provides users with secure access to specific enterprise applications, such as e-mail and web browsing, without requiring them to have VPN client software installed on their end-user devices. The WebVPN Enhancements feature (Cisco IOS SSLVPN), released in Cisco IOS Release 12.4(6)T, obsoletes the commands and configurations originally put forward in Cisco IOS WebVPN. Further information about Cisco IOS WebVPN is available in the "Cisco IOS Software Release 12.3T WebVPN feature guide" at the following link: http://www.cisco.com/en/US/docs/ios/12_3t/12_3t14/feature/guide/g_sslvpn.ht… Further information about Cisco IOS SSLVPN is available in the "Cisco IOS Software Release 12.4T SSLVPN feature guide" at the following link: http://www.cisco.com/en/US/docs/ios/12_4t/12_4t11/htwebvpn.html Details regarding these two vulnerabilities in Cisco IOS devices that are running affected versions of system software are: Crafted HTTPS packet will crash device +-------------------------------------- A device configured for SSLVPN may reload or hang when it receives a specially crafted HTTPS packet. Completion of the 3-way handshake to the associated TCP port number of the SSLVPN feature is required in order for the vulnerability to be successfully exploited, however authentication is "not" required. The default TCP port number for SSLVPN is 443. This vulnerability is documented in Cisco bug ID CSCsk62253 and Common Vulnerabilities and Exposures (CVE) identifier CVE-2009-0626 has been assigned to this vulnerability. SSLVPN sessions cause a memory leak in the device +------------------------------------------------ A device configured for SSLVPN may leak transmission control blocks (TCBs) when processing an abnormally disconnected SSL session. Continued exploitation may result in the device depleting its memory resources and result in a crash of the device. Authentication is "not" required to exploit this vulnerability. The memory leak can be detected by running the command "show tcp brief", like in the following example: Router#show tcp brief TCB Local Address Foreign Address (state) 468BBDC0 192.168.0.22.443 192.168.0.33.19794 CLOSEWAIT 482D4730 192.168.0.22.443 192.168.0.33.22092 CLOSEWAIT 482779A4 192.168.0.22.443 192.168.0.33.16978 CLOSEWAIT 4693DEBC 192.168.0.22.443 192.168.0.33.21580 CLOSEWAIT 482D3418 192.168.0.22.443 192.168.0.33.17244 CLOSEWAIT 482B8ACC 192.168.0.22.443 192.168.0.33.16564 CLOSEWAIT 46954EB0 192.168.0.22.443 192.168.0.33.19532 CLOSEWAIT 468BA9B8 192.168.0.22.443 192.168.0.33.15781 CLOSEWAIT 482908C4 192.168.0.22.443 192.168.0.33.19275 CLOSEWAIT 4829D66C 192.168.0.22.443 192.168.0.33.19314 CLOSEWAIT 468A2D94 192.168.0.22.443 192.168.0.33.14736 CLOSEWAIT 4688F590 192.168.0.22.443 192.168.0.33.18786 CLOSEWAIT 4693CBA4 192.168.0.22.443 192.168.0.33.12176 CLOSEWAIT 4829ABC4 192.168.0.22.443 192.168.0.33.39629 CLOSEWAIT 4691206C 192.168.0.22.443 192.168.0.33.17818 CLOSEWAIT 46868224 192.168.0.22.443 192.168.0.33.16774 CLOSEWAIT 4832BFAC 192.168.0.22.443 192.168.0.33.39883 CLOSEWAIT 482D10CC 192.168.0.22.443 192.168.0.33.13677 CLOSEWAIT 4829B120 192.168.0.22.443 192.168.0.33.20870 CLOSEWAIT 482862FC 192.168.0.22.443 192.168.0.33.17035 CLOSEWAIT 482EC13C 192.168.0.22.443 192.168.0.33.16053 CLOSEWAIT 482901D8 192.168.0.22.443 192.168.0.33.16200 CLOSEWAIT In the output above, those Transmission Control Blocks (TCBs) in the state CLOSEWAIT will not go away and represent memory leaks. Please note that only TCP connections with a local TCP port of 443 (the well-known port for HTTPS) are relevant. This vulnerability is documented in Cisco bug ID CSCsw24700 and Common Vulnerabilities and Exposures (CVE) identifier CVE-2009-0628 has been assigned to this vulnerability. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsk62253 - Crafted HTTPS packet will crash device. CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed CSCsw24700 - SSLVPN sessions cause a memory leak in the device. CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of any of the two vulnerabilities may result in the device crashing, not accepting any new SSLVPN sessions or a memory leak. Repeated exploitation may result in an extended denial of service (DoS) condition. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. +-------------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+------------------------------------------------------| | Affected | | Recommended | | 12.0-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.0 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.1-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.1 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.2-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.2 based releases | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.3-Based | First Fixed Release | Release | | Releases | | | |------------+--------------------------------------+---------------| | 12.3 | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3B | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3BC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3BW | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3EU | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JEA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JEB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JEC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JL | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3JX | Not Vulnerable | | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3T | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.3TPC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3VA | Vulnerable; contact TAC | | |------------+--------------------------------------+---------------| | 12.3XA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XC | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XD | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XE | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XF | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XG | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XI | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XJ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XL | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XQ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XR | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XS | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XU | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XW | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XX | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XY | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3XZ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YD | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YF | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YG | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YH | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YI | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YJ | Not Vulnerable | | |------------+--------------------------------------+---------------| | | Releases prior to 12.3(11)YK3 are | 12.4(22)T1 | | | vulnerable, release 12.3(11)YK3 and | | | 12.3YK | later are not vulnerable; first | 12.4(15)T9; | | | fixed in 12.4T | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.3YM | Not Vulnerable | | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.3YU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.3YX | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3YZ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.3ZA | Not Vulnerable | | |------------+--------------------------------------+---------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+--------------------------------------+---------------| | | | 12.4(18e) | | | 12.4(18e) | | | 12.4 | | 12.4(23a); | | | 12.4(23a); Available on 30-APR-2009 | Available on | | | | 30-APR-2009 | |------------+--------------------------------------+---------------| | 12.4JA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JDA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JL | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JMA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JMB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4JX | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4MD | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4MR | 12.4(16)MR | 12.4(19)MR2 | |------------+--------------------------------------+---------------| | 12.4SW | Not Vulnerable | | |------------+--------------------------------------+---------------| | | 12.4(15)T7 | 12.4(22)T1 | | | | | | 12.4T | 12.4(20)T | 12.4(15)T9; | | | | Available on | | | 12.4(15)T9; Available on 29-APR-2009 | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XB | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | | 12.4(4)XD12; Available on | 12.4(4)XD12; | | 12.4XD | 27-MAR-2009 | Available on | | | | 27-MAR-2009 | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XE | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XF | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4XG | Not Vulnerable | | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XK | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4XL | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4XM | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4XN | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4XP | Vulnerable; contact TAC | | |------------+--------------------------------------+---------------| | 12.4XQ | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4XR | Not Vulnerable | | |------------+--------------------------------------+---------------| | | | 12.4(22)T1 | | | | | | 12.4XT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+--------------------------------------+---------------| | 12.4XV | Vulnerable; contact TAC | | |------------+--------------------------------------+---------------| | 12.4XW | 12.4(11)XW10 | 12.4(11)XW10 | |------------+--------------------------------------+---------------| | 12.4XY | 12.4(15)XY4 | 12.4(22)T1 | |------------+--------------------------------------+---------------| | 12.4XZ | 12.4(15)XZ1 | 12.4(15)XZ2 | |------------+--------------------------------------+---------------| | 12.4YA | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4YB | Not Vulnerable | | |------------+--------------------------------------+---------------| | 12.4YD | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== There are no workarounds for the vulnerabilities described in this advisory. Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt(a)cisco.com or security-alert(a)cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac(a)cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory. These vulnerabilities were discovered when handling customer support calls. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce(a)cisco.com * first-teams(a)first.org * bugtraq(a)securityfocus.com * vulnwatch(a)vulnwatch.org * cisco(a)spot.colorado.edu * cisco-nsp(a)puck.nether.net * full-disclosure(a)lists.grok.org.uk * comp.dcom.sys.cisco(a)newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2009-March-25 | public | | | | release. | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.… This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAknKUdcACgkQ86n/Gc8U/uALXwCgmcIGTSzRIHpHRbVVmMNqPFT4 +CIAn27HdwwpkhVDgEIWTMsIX6NE4BgR =+f8D -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software Multiple Features IP Sockets Vulnerability
by Cisco Systems Product Security Incident Response Team 25 Mar '09

25 Mar '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Multiple Features IP Sockets Vulnerability Advisory ID: cisco-sa-20090325-ip http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml Revision 1.0 For Public Release 2009 March 25 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= A vulnerability in the handling of IP sockets can cause devices to be vulnerable to a denial of service attack when any of several features of Cisco IOS Software are enabled. A sequence of specially crafted TCP/IP packets could cause any of the following results: * The configured feature may stop accepting new connections or sessions. * The memory of the device may be consumed. * The device may experience prolonged high CPU utilization. * The device may reload. Cisco has released free software updates that address this vulnerability. Several mitigation strategies are outlined in the "Workarounds" section of this advisory. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml Note: The March 25, 2009, Cisco IOS Security Advisory bundled publication includes eight Security Advisories. All of the advisories address vulnerabilities in Cisco IOS Software. Each advisory lists the releases that correct the vulnerability or vulnerabilities in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published in Cisco Security Advisories on March 25, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml Individual publication links are listed below: * Cisco IOS cTCP Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml * Cisco IOS Software Multiple Features IP Sockets Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml * Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml * Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml * Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Affected Products ================= Vulnerable Products +------------------ Devices that are running affected versions of Cisco IOS Software and Cisco IOS XE Software are affected if they are running any of the following features. Details about confirming whether the affected feature is enabled on a device are in the "Details" section of this advisory. * Cisco Unified Communications Manager Express * SIP Gateway Signaling Support Over Transport Layer Security (TLS) Transport * Secure Signaling and Media Encryption * Blocks Extensible Exchange Protocol (BEEP) * Network Admission Control HTTP Authentication Proxy * Per-user URL Redirect for EAPoUDP, Dot1x, and MAC Authentication Bypass * Distributed Director with HTTP Redirects * DNS (TCP mode only) To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the "show version" command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the "show version" command or may provide different output. The following example identifies a Cisco product that is running Cisco IOS Software Release 12.3(26) with an installed image name of C2500-IS-L: Router#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by cisco Systems, Inc. Compiled Mon 17-Mar-08 14:39 by dchih <output truncated> The following example shows a product that is running Cisco IOS Software Release 12.4(20)T with an image name of C1841-ADVENTERPRISEK9-M: Router#show version Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jul-08 20:25 by prod_rel_team <output truncated> Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS Reference Guide" at the following link: http://www.cisco.com/warp/public/620/1.html Products Confirmed Not Vulnerable +-------------------------------- The following product is not affected by this vulnerability: * Cisco IOS XR Software No other Cisco products or features configured in Cisco IOS or Cisco IOS XE Software are currently known to be affected by this vulnerability. Details ======== For successful exploitation of this vulnerability, the TCP three-way handshake must be completed to the associated TCP port number(s) for any of the features described in this section. Cisco Unified Communications Manager Express +------------------------------------------- The following configurations are vulnerable for different Cisco Unified Communications Manager Express services: A certificate authority proxy function (CAPF) server has been configured. The following example shows a vulnerable CAPF server configuration: capf-server auth-mode null-string cert-enroll-trustpoint root password 1 104D000A061843595F trustpoint-label cme_cert source-addr 10.0.0.1 The default TCP port used for CAPF server is 3804. Further information about CAPF-server is in the Cisco Unified Communications Manager Express System Administrator Guide at http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/gui… Telephony-service security parameters have been configured. If the telephony-service security parameters have been configured with "device-security-mode", the device is vulnerable. The following example shows three vulnerable configurations for telephony-service security parameters: ephone 1 device-security-mode encrypted ephone 2 device-security-mode authenticated ephone 3 device-security-mode none The TCP port used is defined with the "ip source-address <address> port <port-number>" telephony-service configuration command. Further information about Telephony-service security parameters is in the Cisco Unified Communications Manager Express System Administrator Guide at http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/gui… The global telephony-service or call-manager-fallback command has been configured. Any Cisco IOS configuration with the global "telephony-service" or "call-manager-fallback" command is vulnerable if any subcommands are in the telephony-service or call-manager-fallback configuration mode. The following examples show vulnerable configurations: telephony-service ip source-address 192.168.0.1 port 2011 or call-manager-fallback ip source-address 192.168.0.1 port 2011 The TCP port used is defined with the "ip source-address <address> port <port-number>" configuration command. Further information about telephony service and call-manager-fallback is in the Cisco Unified Communications Manager Express System Administrator Guide at http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/gui… SIP Gateway Signaling Support over TLS Transport +---------------------------------------------- Note: For customers with devices enabled with SIP, also consult the document "Cisco Security Advisory: Cisco IOS Session Initiation Protocol Denial of Service Vulnerability" at the following link http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.html Devices that are configured for SIP gateway signaling support over TLS transport are vulnerable. The following examples show vulnerable configurations: voice service voip sip session transport tcp tls url sips - -- or -- dial-peer voice 3456 voip voice-class sip url sips session protocol sipv2 session transport tcp tls For the SIP gateway signaling support over TLS transport to function correctly, administrators must first configure a trustpoint using the following configuration: sip-ua crypto signaling default trustpoint example_trustpoint_name The default TCP port used for the SIP gateway signaling support over TLS transport feature is 5061. Further information about Cisco IOS SIP gateway signaling support over TLS transport is in the Cisco IOS Software Release 12.4T feature guide at http://www.cisco.com/en/US/docs/ios/12_4t/12_4t11/FeatTLS.html Secure Signaling and Media Encryption +------------------------------------ A device is vulnerable if it is configured with the Media and Signaling Encryption (SRTP/TLS) on DSP Farm Conferencing feature or with Secure Signaling and Media Encryption for analog phones with Skinny Call Control Protocol (SCCP). The following examples show three different vulnerable secure DSP farm configurations. Several other parts are required for a full configuration, such as certificates and SCCP configuration, but these parts have been excluded for brevity. dspfarm profile 2 transcode security trustpoint 2851ClientMina codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec gsmfr codec g729r8 codec g729br8 maximum sessions 3 associate application SCCP dspfarm profile 3 conference security trustpoint sec2800-cfb codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec g729r8 codec g729br8 maximum sessions 2 associate application SCCP dspfarm profile 5 mtp security trustpoint 2851ClientMina codec g711alaw maximum sessions hardware 1 associate application SCCP The default TCP port used for the Media and Signaling Encryption on DSP Farm Conferencing feature is 2443. Further information about the Media and Signaling Encryption on DSP Farm Conferencing feature is in the "Cisco IOS Software Release 12.4 Special and Early Deployments feature guide" at the following link http://www.cisco.com/en/US/docs/ios/12_4t/12_4t15/itsdsp.html The following output shows the relevant section of Secure Signaling and Media Encryption for analog phones and is a vulnerable configuration (Several other parts are required for a full configuration, such as certificates, SCCP configuration, and dial peers): !--- The following lines show SCCP Telephony Control Application !--- (STCAPP) security enabled at the system level: stcapp ccm-group 1 stcapp security trustpoint analog stcapp security mode encrypted stcapp <-- output removed for brevity --> dial-peer voice 5002 pots service stcapp !--- The following line shows the security mode configured on the !--- dial peer. security mode authenticated port 2/1 The default TCP port used for Media and Signaling Encryption for analog phones is 2443. Further information about Media and Signaling Encryption for analog phones is in the "Supplementary Services Features for FXS Ports on Cisco IOS Voice Gateways Configuration Guide, Release 12.4T" at the following link http://www.cisco.com/en/US/docs/ios/voice/fxs/configuration/guide/fsxsecur.… Blocks Extensible Exchange Protocol +---------------------------------- Any configuration or executable command that leverages Blocks Extensible Exchange Protocol (BEEP) as a transport protocol is vulnerable. The following example shows the vulnerable configuration of the feature NETCONF over BEEP. NETCONF over BEEP using SASL is also vulnerable. crypto key generate rsa general-keys crypto pki trustpoint my_trustpoint enrollment url http://10.2.3.3:80 subject-name CN=dns_name_of_host.com revocation-check none crypto pki authenticate my_trustpoint crypto pki enroll my_trustpoint line vty 0 15 netconf lock-time 60 netconf max-sessions 16 netconf beep initiator host1 23 user my_user password my_password encrypt my_trustpoint reconnect-time 60 netconf beep listener 23 sasl user1 encrypt my_trustpoint The TCP port used is defined with the "netconf beep initiator" and "netconf beep listener" configuration commands. Further information about NETCONF over BEEP is in the "Cisco IOS Software Release 12.4T feature guide" at the following link http://www.cisco.com/en/US/docs/ios/12_4t/12_4t11/htnetbe.html#wp1049404 The BEEP executable commands "bingd" and "bingng" could cause this vulnerability to be triggered when they are invoked. The following shows an example of these commands being executed: bingng device 192.168.0.1 23 bingd device 23 Network Admission Control HTTP Authentication Proxy +-------------------------------------------------- Devices configured with Network Admission Control HTTP Authentication Proxy are vulnerable. For the device to be vulnerable the authentication proxy rule must exist and be applied to an interface. The following configuration creates an authentication proxy rule. ip admission name example-ap-rule-name proxy http The following configuration attaches the authentication proxy rule (created in the previous example) to an interface. interface GigabitEthernet 0/0 ip admission example-ap-rule-name The default TCP port used for Network Admission Control HTTP Authentication Proxy is 80. Further information about Network Admission Control HTTP Authentication Proxy is in the "Cisco IOS Security Configuration Guide, Release 12.4" at the following link http://www.cisco.com/en/US/docs/ios/security/configuration/guide/sec_net_ad… Per-user URL Redirect for EAPoUDP, Dot1x, and MAC Authentication Bypass +---------------------------------------------------------------------- Devices that have URL redirect feature configured are vulnerable. URL redirect is supported for EAP over UDP (EAPoUDP), Dot1x and MAC Authentication Bypass (MAB) authentication mechanisms. The URL redirect configuration can either be on the server or set up as part of a locally defined profile or policy. Both configurations are vulnerable. A device is vulnerable with either of the following configurations. URL Redirect Feature Enabled for EAPoUDP +--------------------------------------- The URL redirect feature is enabled for EAPoUDP with the following global configuration command: ip admission name <EAPoUDP-rule-name> eapoudp The following configuration attaches the EAPoUDP rule (created in the previous example) to an interface. ip admission name <EAPoUDP-rule-name> URL Redirect Feature Enabled for Dot1x and MAB +--------------------------------------------- The URL redirect feature for both Dot1x and MAB are vulnerable and will have a URL redirect AV pair on the RADIUS server defined in a method that is similar to the following: url-redirect="http://example.com" url-redirect="urlacl" For the Dot1x and MAB URL redirect feature to work successfully on the switch, the minimum following configuration would also be required. There is no interface-specific configuration for URL redirect. Basically the interface has to be configured for Dot1x/MAB. ip http {server | secure-server} ip device tracking The default TCP port used for per-user URL redirect for EAPoUDP, Dot1x, and MAB is 80 and 443. Further information about per-user URL redirect for EAPoUDP, Dot1x, and MAB is in the "Catalyst 4500 Series Switch Software Configuration Guide, 12.2(50)SG" at the following link http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/50sg/configu… Distributed Director with HTTP Redirects +--------------------------------------- A device is vulnerable if Distributed Director is configured with HTTP redirects. The following example shows a vulnerable configuration: ip director ip-address 192.168.0.1 The default TCP port used for distributed director with HTTP redirect is 53. Further information about Distributed Director with HTTP redirects is in "Distributed Director Configuration Example Overview" at the following link http://www.cisco.com/en/US/products/hw/contnetw/ps813/products_tech_note091… DNS +-- Devices that are configured with the Cisco IOS DNS feature are vulnerable. A pure DNS over UDP implementation is not vulnerable. See the "Workarounds" section of this advisory for information about filtering DNS over TCP traffic to the device. If any of the commands in the following example appear in the device configuration, the device is vulnerable: ip dns server ip dns primary example.com soa www.example.com admin(a)example.com ip dns spoofing 192.168.0.1 The default TCP port used for DNS is 53. Further information about Cisco IOS DNS is in the "Cisco IOS IP Addressing Services Configuration Guide, Release 12.4" at the following link http://www.cisco.com/en/US/docs/ios/ipaddr/configuration/guide/iad_config_d… This vulnerability is documented in the following Cisco Bug ID: CSCsm27071 and has been assigned the Common Vulnerabilities and Exposures (CVE) identifiers CVE-2009-0630. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsm27071: Cisco IOS Software Multiple Features IP Sockets CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability may result in the any of the following occurring: * The configured feature may stop accepting new connections or sessions. * The memory of the device may be consumed. * The device may experience prolonged high CPU utilization. * The device may reload. Repeated attempts to exploit this vulnerability could result in a sustained DoS condition. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. +-------------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+------------------------------------------------------| | Affected | | Recommended | | 12.0-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DA | Vulnerable; first fixed in 12.2DA | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0S | 12.0(32)S12 | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SC | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SL | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0SP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0ST | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SX | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SY | 12.0(32)SY8 | 12.0(32)SY8 | |------------+-------------------------------------+----------------| | 12.0SZ | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0W | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.0WC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.0WT | Not Vulnerable | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0XF | Not Vulnerable | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Releases prior to 12.0(4)XI2 are | 12.4(18e) | | | vulnerable, release 12.0(4)XI2 and | | | 12.0XI | later are not vulnerable; first | 12.4(23a); | | | fixed in 12.4 | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XK | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XN | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.1-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1AA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1AX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1AY | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1AZ | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.1CX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1DA | Vulnerable; first fixed in 12.2DA | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1DB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1DC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1E | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.1EA | 12.1(22)EA13 | 12.1(22)EA13 | |------------+-------------------------------------+----------------| | 12.1EB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.2(33)SCB1 | | 12.1EC | Vulnerable; first fixed in 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | 12.1EO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EU | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.1EV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EW | Vulnerable; migrate to 12.2SGA | | |------------+-------------------------------------+----------------| | 12.1EX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EZ | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1GA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1GB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XF | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XI | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XU | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XY | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XZ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Releases prior to 12.1(5)YE6 are | 12.4(18e) | | | vulnerable, release 12.1(5)YE6 and | | | 12.1YE | later are not vulnerable; first | 12.4(23a); | | | fixed in 12.4 | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YF | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1YI | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1YJ | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.2-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2B | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB1 or | 12.2(33)SCB1 | | 12.2BC | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2BX | Vulnerable; migrate to 12.2SB4 | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BY | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BZ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2CX | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2CY | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | 12.2CZ | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | 12.2(12)DA14; Available on | | | 12.2DA | 30-JUL-2009 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2DD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2DX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2EW | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2EWA | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2EX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2EY | 12.2(44)EY | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2EZ | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FY | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FZ | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2IRA | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2IRB | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXA | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXB | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXC | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXD | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXE | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXF | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXG | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | 12.2JA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2JK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2MB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2MC | 12.2(15)MC2m | 12.2(15)MC2m | |------------+-------------------------------------+----------------| | 12.2S | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | 12.2(31)SB14 | | | | | | | 12.2SB | 12.2(33)SB1 | 12.2(33)SB4 | | | | | | | 12.2(28)SB13 | | |------------+-------------------------------------+----------------| | 12.2SBC | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2SCA | 12.2(33)SCA2 | 12.2(33)SCB1 | |------------+-------------------------------------+----------------| | 12.2SCB | Not Vulnerable | | |------------+-------------------------------------+----------------| | | 12.2(50)SE | | | | | | | 12.2SE | 12.2(46)SE2 | 12.2(44)SE6 | | | | | | | 12.2(44)SE5 | | |------------+-------------------------------------+----------------| | 12.2SEA | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEB | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEC | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SED | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEE | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEF | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEG | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.2(52)SG; | | 12.2SG | 12.2(50)SG | Available on | | | | 15-MAY-2009 | |------------+-------------------------------------+----------------| | 12.2SGA | 12.2(31)SGA9 | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2SL | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2SM | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SQ | Not Vulnerable | | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2SRA | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRB5a; | | | | Available on | | | | 3-April-2009 | | 12.2SRB | Vulnerable; first fixed in 12.2SRC | | | | | 12.2(33)SRC4; | | | | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2SRC | 12.2(33)SRC1 | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | 12.2SRD | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2STE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2SU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.2SV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SX | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXA | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXB | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXD | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXE | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXF | 12.2(18)SXF16 | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | | 12.2(33)SXH5; Available on | 12.2(33)SXH5; | | 12.2SXH | 20-APR-2009 | Available on | | | | 20-APR-2009 | |------------+-------------------------------------+----------------| | 12.2SXI | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2SY | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2SZ | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2TPC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2XF | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XI | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XK | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SB4 | | 12.2XN | Vulnerable; first fixed in 12.2SRC | | | | | 12.2(33)SRD1 | |------------+-------------------------------------+----------------| | 12.2XNA | Vulnerable; migrate to any release | 12.2(33)SRD1 | | | in 12.2SRD | | |------------+-------------------------------------+----------------| | 12.2XNB | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2XNC | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2XO | 12.2(46)XO | 12.2(46)XO | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XU | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2YA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YF | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YG | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YH | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YJ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YK | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2YM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YN | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2YP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YQ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YR | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YS | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2YT | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YU | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YZ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZA | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2ZB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2ZE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2ZF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2ZG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2ZH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2ZJ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZP | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.2(33)SXH5; | | 12.2ZU | Vulnerable; first fixed in 12.2SXH | Available on | | | | 20-APR-2009 | |------------+-------------------------------------+----------------| | 12.2ZX | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2ZY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZYA | 12.2(18)ZYA1 | 12.2(18)ZYA1 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.3-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3B | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3BC | 12.3(23)BC6 | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3BW | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3EU | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.3JA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3JK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3JL | Vulnerable; first fixed in 12.4JK | | |------------+-------------------------------------+----------------| | 12.3JX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3T | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3TPC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3VA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XD | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XF | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XI | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.3XJ | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XL | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XW | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XX | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XY | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XZ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YD | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YF | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YH | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YI | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YM | 12.3(14)YM13 | 12.3(14)YM13 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YU | Vulnerable; first fixed in 12.4XB | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YX | 12.3(14)YX14 | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | 12.3YZ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3ZA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | 12.4(19) | 12.4(18e) | | | | | | 12.4 | 12.4(18a) | 12.4(23a); | | | | Available on | | | 12.4(23a); Available on 30-APR-2009 | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.4JA | 12.4(16b)JA1 | | |------------+-------------------------------------+----------------| | 12.4JDA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JK | 12.4(3)JK4 | | |------------+-------------------------------------+----------------| | 12.4JL | 12.4(3)JL1 | | |------------+-------------------------------------+----------------| | 12.4JMA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JMB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JX | Vulnerable; first fixed in 12.4JA | | |------------+-------------------------------------+----------------| | 12.4MD | 12.4(11)MD7 | 12.4(11)MD7 | |------------+-------------------------------------+----------------| | 12.4MR | 12.4(19)MR | 12.4(19)MR2 | |------------+-------------------------------------+----------------| | 12.4SW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | 12.4(20)T | 12.4(22)T1 | | | | | | 12.4T | 12.4(15)T8 | 12.4(15)T9; | | | | Available on | | | 12.4(15)T9; Available on | 29-APR-2009 | | | 29-APR-2009 | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | 12.4(15)T8 | | | 12.4XB | | 12.4(15)T9; | | | 12.4(20)T | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | 12.4(4)XD12; Available on | 12.4(4)XD12; | | 12.4XD | 27-MAR-2009 | Available on | | | | 27-MAR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XE | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XL | 12.4(15)XL4 | 12.4(15)XL4 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XN | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XP | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XQ | 12.4(15)XQ2 | 12.4(15)XQ2 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XR | 12.4(15)XR4 | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XW | 12.4(11)XW10 | 12.4(11)XW10 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XY | 12.4(15)XY4 | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XZ | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.4YA | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.4YB | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.4YD | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== The following mitigations have been identified for this vulnerability: Infrastructure Access Control Lists +---------------------------------- Although it is often difficult to block traffic that transits a network, it is possible to identify traffic that should never be allowed to target infrastructure devices and block that traffic at the border of networks. Infrastructure Access Control Lists (iACLs) are a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for these specific vulnerabilities. The iACL example below should be included as part of the deployed infrastructure access-list which will protect all devices with IP addresses in the infrastructure IP address range: !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- Feature: Cisco Unified Communications Manager Express !--- !--- CAPF server configuration !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 3804 !--- !--- Telephony-Service configuration !--- The TCP port is as per the ip source-address !--- <ip-address> port <port-number> telephony !--- service configuration command. Example below 2999 !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 2999 !--- !--- Deny Cisco Unified Communications Manager Express traffic !--- from all other sources destined to infrastructure addresses. !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 3804 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 2999 !--- !--- Feature: SIP Gateway Signaling Support Over TLS Transport !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 5061 !--- Deny SIP Gateway Signaling Support Over TLS Transport !--- traffic from all other sources destined to infrastructure !--- addresses. access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 5061 !--- !--- Feature: Secure Signaling and Media Encryption !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 2443 !--- Deny Secure Signaling and Media Encryption traffic from all !--- other sources destined to infrastructure addresses. access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 2443 !--- !--- Feature: Blocks Extensible Exchange Protocol (BEEP) !--- The TCP port used is defined with the netconf beep initiator !--- and netconf beep listener configuration !--- commands. This example uses 3001 !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 3001 !--- Deny BEEP traffic from all other sources destined to !--- infrastructure addresses. access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 3001 !--- !--- Feature: Network Admission Control HTTP Authentication Proxy !--- and !--- Per-user URL Redirect for EAP over UDP, Dot1x and MAC !--- Authentication Bybass !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 80 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 443 !--- !--- Deny Network Admission Control HTTP Authentication Proxy !--- and !--- Per-user URL Redirect for EAP over UDP, Dot1x and MAC !--- Authentication Bybass traffic to infrastructue !--- access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 80 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 443 !--- !--- Features: Distributed Director with HTTP Redirects and DNS !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 53 !--- Deny Distributed Director with HTTP Redirects traffic and DNS !--- from all other sources destined to infrastructure addresses. access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 53 !--- Permit/deny all other Layer 3 and Layer 4 traffic in !--- accordance with existing security policies and configurations !--- Permit all other traffic to transit the device. access-list 150 permit ip any any !--- Apply access-list to all interfaces (only one example shown) interface serial 2/0 ip access-group 150 in The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper can be obtained at the following link http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a0… Receive ACLs (rACL) +------------------ For distributed platforms, Receive ACLs may be an option starting in Cisco IOS Software Versions 12.0(21)S2 for the 12000 (GSR), 12.0(24)S for the 7500, and 12.0(31)S for the 10720. The Receive ACL protects the device from harmful traffic before the traffic can impact the route processor. Receive ACLs are designed to only protect the device on which it is configured. On the 12000, 7500, and 10720, transit traffic is never affected by a receive ACL. Because of this, the destination IP address "any" used in the example ACL entries below only refer to the router's own physical or virtual IP addresses. Receive ACLs are considered a network security best practice, and should be considered as a long-term addition to good network security, as well as a workaround for this specific vulnerability. The white paper entitled "GSR: Receive Access Control Lists" will help you identify and allow legitimate traffic to your device and deny all unwanted packets. This white paper is available at the following link http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a0… The following is the receive path ACL written to permit this type of traffic from trusted hosts: !--- !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- !--- Feature: Cisco Unified Communications Manager Express !--- !--- !--- !--- Permit CAPF server traffic from trusted hosts allowed to !--- the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 3804 !--- !--- Telephony-Service configuration !--- !--- !--- The TCP port is as per the ip source-address !--- <address> port <port-number> telephony-service !--- configuration command. Example below 2999 !--- !--- Permit Telephony-Service traffic from trusted hosts allowed !--- to the RP. access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2999 !--- !--- Deny Cisco Unified Communications Manager Express !--- traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 3804 access-list 150 deny tcp any any eq 2999 !--- !--- Permit SIP Gateway Signaling Support Over TLS Transport !--- traffic from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 5061 !--- !--- Deny SIP Gateway Signaling Support Over TLS Transport !--- traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 5061 !--- !--- Permit Secure Signaling and Media Encryption traffic !--- from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2443 !--- !--- Deny Secure Signaling and Media Encryption traffic from !--- all other sources to the RP. !--- access-list 150 deny tcp any any eq 2443 !--- !--- Feature: Blocks Extensible Exchange Protocol (BEEP) !--- The TCP port used is defined with the netconf beep initiator !--- and netconf beep listener configuration commands. !--- This example uses 3001 !--- !--- !--- Permit BEEP traffic from trusted hosts allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 3001 !--- !--- Deny BEEP traffic from all other sources to the RP. !--- access-list 150 deny tcp any any eq 3001 !--- !--- Feature: Network Admission Control HTTP Authentication Proxy !--- and !--- Per-user URL Redirect for EAP over UDP, Dot1x and MAC !--- Authentication Bybass !--- !--- !--- Permit Per-user URL Redirect for EAP over UDP, Dot1x and MAC !--- Authentication Bybass traffic from trusted hosts allowed to !--- the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 80 access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 443 !--- !--- Deny Network Admission Control HTTP Authentication Proxy !--- and !--- Per-user URL Redirect for EAP over UDP, Dot1x and MAC !--- Authentication Bybass traffic from all other sources to !--- the RP. !--- access-list 150 deny tcp any any eq 80 access-list 150 deny tcp any any eq 443 !--- !--- Features: Distributed Director with HTTP Redirects and DNS !--- !--- !--- Permit Distribute Director and DNS traffic from trusted hosts !--- allowed to the RP. !--- access-list 150 permit tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 53 !--- !--- Deny distributed director and DNS traffic from all other !--- sources to the RP. !--- access-list 150 deny tcp any any eq 53 !--- !--- Permit all other traffic to the RP. !--- according to security policy and configurations. !--- access-list 150 permit ip any any !--- !--- Apply this access list to the 'receive' path. !--- ip receive access-list 150 Control Plane Policing +--------------------- Control Plane Policing (CoPP) can be used to block the affected features TCP traffic access to the device. Cisco IOS software releases 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T support the CoPP feature. CoPP can be configured on a device to protect the management and control planes and minimize the risk and effectiveness of direct infrastructure attacks by explicitly permitting only authorized traffic that is sent to infrastructure devices in accordance with existing security policies and configurations. The CoPP example below should be included as part of the deployed CoPP which will protect all devices with IP addresses in the infrastructure IP address range. !--- !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- Feature: Cisco Unified Communications Manager Express !--- !--- CAPF Server configuration !--- access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 3804 !--- !--- Telephony-Service configuration !--- The TCP port is as per the ip source-address !--- <address> port <port-number> telephony-service !--- configuration command. Example below 2999 !--- access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2999 !--- !--- Permit Cisco Unified Communications Manager Express traffic !--- sent to all IP addresses configured on all interfaces of !--- the affected device so that it will be policed and dropped !--- by the CoPP feature !--- !--- CAPF server configuration !--- access-list 150 permit tcp any any eq 3804 !--- !--- Telephony-Service configuration !--- access-list 150 permit tcp any any eq 2999 !--- !--- Feature: SIP Gateway Signaling Support Over TLS Transport !--- access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 5061 !--- !--- Permit SIP Gateway Signaling Support Over TLS Transport !--- traffic sent to all IP addresses configured on all interfaces !--- of the affected device so that it will be policed and !--- dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 5061 !--- !--- Feature: Secure Signaling and Media Encryption !--- access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2443 !--- !--- Permit Secure Signaling and Media Encryption traffic sent to !--- all IP addresses configured on all interfaces of the affected !--- device so that it will be policed and dropped by the CoPP !--- feature !--- access-list 150 permit tcp any any eq 2443 !--- !--- Feature: Blocks Extensible Exchange Protocol (BEEP) !--- The TCP port used is defined with the netconf beep initiator !--- and netconf beep listener configuration commands. !--- This example uses 3001 !--- access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 3001 !--- !--- Permit BEEP traffic sent to all IP addresses configured !--- on all interfaces of the affected device so that it !--- will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 3001 !--- !--- Feature: Network Admission Control HTTP Authentication Proxy !--- and !--- Per-user URL Redirect for EAP over UDP, Dot1x and MAC !--- Authentication Bybass !--- access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 80 access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 443 !--- !--- Permit Network Admission Control HTTP Authentication Proxy !--- and Per-user URL Redirect for EAP over UDP, Dot1x and MAC !--- Authentication Bybass traffic sent to all IP addresses !--- configured on all interfaces of the affected device so that it !--- will be policed and dropped by the CoPP feature !--- access-list 150 permit tcp any any eq 80 access-list 150 permit tcp any any eq 443 !--- !--- Features: Distributed Director with HTTP Redirects and DNS !--- access-list 150 deny tcp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 53 !--- !--- Permit Distributed Director with HTTP Redirects and DNS !--- traffic sent to all IP addresses configured on all interfaces !--- of the affected device so that it will be policed and dropped !--- by the CoPP feature !--- access-list 150 permit tcp any any eq 53 !--- !--- Permit (Police or Drop)/Deny (Allow) all other Layer3 and !--- Layer4 traffic in accordance with existing security policies !--- and configurations for traffic that is authorized to be sent !--- to infrastructure devices !--- !--- !--- Create a Class-Map for traffic to be policed by !--- the CoPP feature !--- class-map match-all drop-tcpip-class match access-group 150 !--- !--- Create a Policy-Map that will be applied to the !--- Control-Plane of the device. !--- policy-map drop-tcpip-traffic class drop-tcpip-class drop !--- !--- Apply the Policy-Map to the !--- Control-Plane of the device !--- control-plane service-policy input drop-tcpip-traffic In the above CoPP example, the access control list entries (ACEs) that match the potential exploit packets with the "permit" action result in these packets being discarded by the policy-map "drop" function, while packets that match the "deny" action (not shown) are not affected by the policy-map drop function. Please note that the policy-map syntax is different in the 12.2S and 12.0S Cisco IOS trains: policy-map drop-tcpip-traffic class drop-tcpip-class police 32000 1500 1500 conform-action drop exceed-action drop Additional information on the configuration and use of the CoPP feature can be found in the documents, "Control Plane Policing Implementation Best Practices" and "Cisco IOS Software Releases 12.2 S - Control Plane Policing" at the following links http://www.cisco.com/web/about/security/intelligence/coppwp_gs.html and http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html Additional mitigations that can be deployed on Cisco devices within the network are available in the "Cisco Applied Mitigation Bulletin" companion document for this advisory at the following link http://www.cisco.com/warp/public/707/cisco-amb-20090325-tcp-and-ip.shtml Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt(a)cisco.com or security-alert(a)cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac(a)cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. This vulnerability was discovered by Cisco when performing internal vulnerability testing. We would also like to thank Jens Link, freelance consultant, for also reporting this vulnerability to us. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcpip.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce(a)cisco.com * first-bulletins(a)lists.first.org * bugtraq(a)securityfocus.com * vulnwatch(a)vulnwatch.org * cisco(a)spot.colorado.edu * cisco-nsp(a)puck.nether.net * full-disclosure(a)lists.grok.org.uk * comp.dcom.sys.cisco(a)newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2009-March-25 | public | | | | release. | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.… This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAknKUasACgkQ86n/Gc8U/uBbjACeIwNWs1Rt18l5RAnnaMCvg4GA kK0AnjoeX6PBI/y6tro0tjJUCfrAAr30 =Ijff -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability
by Cisco Systems Product Security Incident Response Team 25 Mar '09

25 Mar '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability Advisory ID: cisco-sa-20090325-sip http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml Revision 1.0 For Public Release 2009 March 25 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= A vulnerability exists in the Session Initiation Protocol (SIP) implementation in Cisco IOS Software that can be exploited remotely to cause a reload of the Cisco IOS device. Cisco has released free software updates that address this vulnerability. There are no workarounds available to mitigate the vulnerability apart from disabling SIP, if the Cisco IOS device does not need to run SIP for VoIP services. However, mitigation techniques are available to help limit exposure to the vulnerability. This advisory is posted at the following link: http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml Note: The March 25, 2009, Cisco IOS Security Advisory bundled publication includes eight Security Advisories. All of the advisories address vulnerabilities in Cisco IOS Software. Each advisory lists the releases that correct the vulnerability or vulnerabilities in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published in Cisco Security Advisories on March 25, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml Individual publication links are listed below: * Cisco IOS cTCP Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml * Cisco IOS Software Multiple Features IP Sockets Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-mobileip.shtml * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml * Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml * Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml * Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Affected Products ================= This vulnerability only affects devices running Cisco IOS Software with SIP voice services enabled. Vulnerable Products +------------------ Cisco devices running affected Cisco IOS Software versions that process SIP messages are affected. The only requirement for this vulnerability is that the Cisco IOS device process SIP messages as part of configured VoIP functionality. Note that this does not apply to the processing of SIP messages as part of the NAT and firewall feature sets. Recent versions of Cisco IOS Software do not process SIP messages by default. Creating a dial peer by way of the command dial-peer voice will start the SIP processes and cause the Cisco IOS device to start processing SIP messages. In addition, several features within Cisco Unified Communications Manager Express, such as ePhones, once configured will also automatically start the SIP process, which will cause the device to start processing SIP messages. An example of an affected configuration is as follows: dial-peer voice <Voice dial-peer tag> voip ... ! Note: Older versions of Cisco IOS Software were affected by a bug that caused Cisco IOS Software to process SIP messages without being configured for SIP operation. Refer to http://www.cisco.com/warp/ public/707/cisco-sa-20070131-sip.shtml for additional information on Cisco bug ID CSCsb25337. In addition to inspecting the Cisco IOS device configuration for a dial-peer command that causes the device to process SIP messages, administrators can also use the command show processes | include SIP to determine whether Cisco IOS Software is running the processes that handle SIP messages. In the following example, the presence of the processes CCSIP_UDP_SOCKET and CCSIP_TCP_SOCKET indicates that the Cisco IOS device is processing SIP messages: Router#show processes | include SIP 147 Mwe 40F46DF4 12 2 600023468/24000 0 CCSIP_SPI_CONTRO 148 Mwe 40F21244 0 1 0 5524/6000 0 CCSIP_DNS 149 Mwe 40F48254 4 1 400023108/24000 0 CCSIP_UDP_SOCKET 150 Mwe 40F48034 4 1 400023388/24000 0 CCSIP_TCP_SOCKET Warning: Since there are several ways a device running Cisco IOS Software can start processing SIP messages, it is recommended that the show processes | include SIP command be used to determine whether the device is processing SIP messages instead of relying on the presence of specific configuration commands. To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the show version command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the show version command or may provide different output. The following example identifies a Cisco product that is running Cisco IOS Software Release 12.3(26) with an installed image name of C2500-IS-L: Router#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by cisco Systems, Inc. Compiled Mon 17-Mar-08 14:39 by dchih !--- output truncated The following example identifies a Cisco product that is running Cisco IOS Software Release 12.4(20)T with an installed image name of C1841-ADVENTERPRISEK9-M: Router#show version Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jul-08 20:25 by prod_rel_team !--- output truncated Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS Reference Guide" at the following link: http://www.cisco.com/warp/public/620/1.html Products Confirmed Not Vulnerable +-------------------------------- The SIP Application Layer Gateway (ALG), which is used by the Cisco IOS NAT and firewall features of Cisco IOS Software, is not affected by this vulnerability. Cisco devices that are running Cisco IOS XE Software and Cisco IOS XR Software are not affected. No other Cisco products are currently known to be affected by this vulnerability. Details ======= SIP is a popular signaling protocol that is used to manage voice and video calls across IP networks such as the Internet. SIP is responsible for handling all aspects of call setup and termination. Voice and video are the most popular types of sessions that SIP handles, but the protocol has the flexibility to accommodate other applications that require call setup and termination. SIP call signaling can use UDP (port 5060), TCP (port 5060), or TLS (TCP port 5061) as the underlying transport protocol. A denial of service (DoS) vulnerability exists in the SIP implementation in Cisco IOS Software. This vulnerability is triggered by processing a specific and valid SIP message. This vulnerability is documented in Cisco Bug ID CSCsu11522 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-0636. Note: The vulnerabilities described in the advisories Cisco IOS Software Multiple Features IP Sockets Vulnerability and Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability, both part of this bundle of Cisco IOS advisories, may also impact SIP operations. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsu11522 - A voice gateway may crash when processing valid SIP CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability described in this document may result in a reload of the device. The issue could be repeatedly exploited to cause an extended DoS condition. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. Note: In addition to CSCsu11522 and because of its impact on SIP operation, this table of fixed software takes into consideration the vulnerability tracked by Cisco Bug CSCsk64158 , from "Cisco Security Advisory: Crafted UDP Packet Affects Multiple Cisco IOS Features" (http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml) The table does not take into consideration the vulnerability disclosed by "Cisco Security Advisory: Cisco IOS IP Sockets Vulnerability Affecting Multiple Cisco IOS Features", which may impact SIP over TLS. +-------------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+------------------------------------------------------| | Affected | | Recommended | | 12.0-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DA | Vulnerable; first fixed in 12.2DA | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0S | 12.0(32)S12 | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SC | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SL | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0SP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0ST | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SX | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SY | 12.0(32)SY8 | 12.0(32)SY8 | |------------+-------------------------------------+----------------| | 12.0SZ | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0W | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.0WC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.0WT | Not Vulnerable | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0XF | Not Vulnerable | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Releases prior to 12.0(4)XI2 are | 12.4(18e) | | | vulnerable, release 12.0(4)XI2 and | | | 12.0XI | later are not vulnerable; first | 12.4(23a); | | | fixed in 12.4 | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XK | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XN | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.1-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1AA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1AX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1AY | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1AZ | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.1CX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1DA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1DB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1DC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1E | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.1EA | 12.1(22)EA13 | 12.1(22)EA13 | |------------+-------------------------------------+----------------| | 12.1EB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.2(33)SCB1 | | 12.1EC | Vulnerable; first fixed in 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | 12.1EO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EU | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.1EV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EW | Vulnerable; migrate to 12.2SGA | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1EX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1EY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EZ | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1GA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1GB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XF | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XI | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XU | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XY | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XZ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Releases prior to 12.1(5)YE6 are | 12.4(18e) | | | vulnerable, release 12.1(5)YE6 and | | | 12.1YE | later are not vulnerable; first | 12.4(23a); | | | fixed in 12.4 | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YF | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1YI | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1YJ | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.2-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2B | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2BC | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2BX | Vulnerable; migrate to 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BY | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BZ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2CX | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2CY | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | 12.2CZ | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | 12.2(12)DA14; Available on | | | 12.2DA | 30-JUL-2009 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2DD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2DX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2EW | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2EWA | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2EX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2EY | 12.2(44)EY | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2EZ | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FY | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FZ | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2IRA | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2IRB | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXA | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXB | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXC | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXD | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXE | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXF | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXG | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | 12.2JA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2JK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2MB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2MC | 12.2(15)MC2m | 12.2(15)MC2m | |------------+-------------------------------------+----------------| | 12.2S | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | 12.2(28)SB13 | | | | | | | 12.2SB | 12.2(31)SB14 | 12.2(33)SB4 | | | | | | | 12.2(33)SB3 | | |------------+-------------------------------------+----------------| | 12.2SBC | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2SCA | Vulnerable; first fixed in 12.2SCB | 12.2(33)SCB1 | |------------+-------------------------------------+----------------| | 12.2SCB | 12.2(33)SCB1 | 12.2(33)SCB1 | |------------+-------------------------------------+----------------| | | 12.2(50)SE | | | | | | | 12.2SE | 12.2(46)SE2 | 12.2(44)SE6 | | | | | | | 12.2(44)SE5 | | |------------+-------------------------------------+----------------| | 12.2SEA | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEB | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEC | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SED | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEE | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEF | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEG | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.2(52)SG; | | 12.2SG | 12.2(50)SG | Available on | | | | 15-MAY-2009 | |------------+-------------------------------------+----------------| | 12.2SGA | 12.2(31)SGA9 | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2SL | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2SM | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SQ | 12.2(44)SQ1 | | |------------+-------------------------------------+----------------| | | | 12.2(33)SRD1 | | | | | | 12.2SRA | Vulnerable; first fixed in 12.2SRC | 12.2(33)SRC4; | | | | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | | | Available on | | | | 18-MAY-2009 | | | | | | 12.2SRB | Vulnerable; first fixed in 12.2SRC | 12.2(33)SRD1 | | | | | | | | 12.2(33)SRB5a; | | | | Available on | | | | 3-April-2009 | |------------+-------------------------------------+----------------| | | 12.2(33)SRC4; Available on | 12.2(33)SRC4; | | 12.2SRC | 18-MAY-2009 | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | 12.2SRD | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2STE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2SU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.2SV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SX | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXA | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXB | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXD | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXE | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXF | 12.2(18)SXF16 | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | | 12.2(33)SXH5; Available on | 12.2(33)SXH5; | | 12.2SXH | 20-APR-2009 | Available on | | | | 20-APR-2009 | |------------+-------------------------------------+----------------| | 12.2SXI | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2SY | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2SZ | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2TPC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2XF | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XI | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XK | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SB4 | | 12.2XN | Vulnerable; first fixed in 12.2SRC | | | | | 12.2(33)SRD1 | |------------+-------------------------------------+----------------| | 12.2XNA | Vulnerable; migrate to any release | 12.2(33)SRD1 | | | in 12.2SRD | | |------------+-------------------------------------+----------------| | 12.2XNB | 12.2(33)XNB1 | 12.2(33)XNB3 | |------------+-------------------------------------+----------------| | 12.2XNC | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2XO | 12.2(46)XO | 12.2(46)XO | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XU | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2YA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YF | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YG | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YH | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YJ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YK | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2YM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YN | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2YP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YQ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YR | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YS | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2YT | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YU | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YZ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZA | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2ZB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2ZE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2ZF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2ZG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2ZH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2ZJ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZP | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.2(33)SXH5; | | 12.2ZU | Vulnerable; first fixed in 12.2SXH | Available on | | | | 20-APR-2009 | |------------+-------------------------------------+----------------| | 12.2ZX | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2ZY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZYA | 12.2(18)ZYA1 | 12.2(18)ZYA1 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.3-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3B | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3BC | 12.3(23)BC6 | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3BW | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3EU | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.3JA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3JK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3JL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3T | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3TPC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3VA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XD | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XF | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XI | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.3XJ | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XL | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XW | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XX | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XY | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XZ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YD | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YF | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YH | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YI | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YM | 12.3(14)YM13 | 12.3(14)YM13 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YU | Vulnerable; first fixed in 12.4XB | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YX | 12.3(14)YX14 | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | 12.3YZ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3ZA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | 12.4(18e) | 12.4(18e) | | | | | | 12.4 | 12.4(23) | 12.4(23a); | | | | Available on | | | 12.4(23a); Available on 30-APR-2009 | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.4JA | 12.4(16b)JA1 | | |------------+-------------------------------------+----------------| | 12.4JDA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JK | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JMA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JMB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JX | Vulnerable; first fixed in 12.4JA | | |------------+-------------------------------------+----------------| | 12.4MD | 12.4(11)MD7 | 12.4(11)MD7 | |------------+-------------------------------------+----------------| | 12.4MR | 12.4(19)MR1 | 12.4(19)MR2 | |------------+-------------------------------------+----------------| | 12.4SW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | 12.4(20)T2 | | | | | 12.4(22)T1 | | | 12.4(15)T8 | | | 12.4T | | 12.4(15)T9; | | | 12.4(22)T | Available on | | | | 29-APR-2009 | | | 12.4(15)T9; Available on | | | | 29-APR-2009 | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | 12.4(15)T8 | 12.4(22)T1 | | | | | | 12.4XB | 12.4(20)T2 | 12.4(15)T9; | | | | Available on | | | 12.4(15)T9; Available on | 29-APR-2009 | | | 29-APR-2009 | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | 12.4(4)XD12; Available on | 12.4(4)XD12; | | 12.4XD | 27-MAR-2009 | Available on | | | | 27-MAR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XE | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | 12.4(15)T8 | | | 12.4XG | | 12.4(15)T9; | | | 12.4(20)T2 | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XL | 12.4(15)XL4 | 12.4(15)XL4 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XN | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XP | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XQ | 12.4(15)XQ2 | 12.4(15)XQ2 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XR | 12.4(15)XR4 | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XW | 12.4(11)XW10 | 12.4(11)XW10 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XY | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XZ | 12.4(15)XZ2 | 12.4(15)XZ2 | |------------+-------------------------------------+----------------| | 12.4YA | 12.4(20)YA2 | 12.4(20)YA3 | |------------+-------------------------------------+----------------| | 12.4YB | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.4YD | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== If the affected Cisco IOS device requires SIP for VoIP services, SIP cannot be disabled, and therefore, no workarounds are available. Users are advised to apply mitigation techniques to help limit exposure to the vulnerability. Mitigation consists of allowing only legitimate devices to connect to the routers. To increase effectiveness, the mitigation must be coupled with anti-spoofing measures on the network edge. This action is required because SIP can use UDP as the transport protocol. Additional mitigations that can be deployed on Cisco devices within the network are available in the companion document "Cisco Applied Mitigation Bulletin: Identifying and Mitigating Exploitation of the Cisco IOS SIP and Crafted UDP Vulnerabilities", which is available at the following location: http://www.cisco.com/warp/public/707/cisco-amb-20090325-sip-and-udp.shtml Disable SIP Listening Ports +-------------------------- For devices that do not require SIP to be enabled, the simplest and most effective workaround is to disable SIP processing on the device. Some versions of Cisco IOS Software allow administrators to accomplish this with the following commands: sip-ua no transport udp no transport tcp Warning: When applying this workaround to devices that are processing Media Gateway Control Protocol (MGCP) or H.323 calls, the device will not stop SIP processing while active calls are being processed. Under these circumstances, this workaround should be implemented during a maintenance window when active calls can be briefly stopped. After applying this workaround, administrators are advised to use the show commands, as discussed in the Affected Products section of this advisory, to confirm that the Cisco IOS device is no longer processing SIP messages. Control Plane Policing +--------------------- For devices that need to offer SIP services it is possible to use Control Plane Policing (CoPP) to block SIP traffic to the device from untrusted sources. Cisco IOS Releases 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T support the CoPP feature. CoPP may be configured on a device to protect the management and control planes to minimize the risk and effectiveness of direct infrastructure attacks by explicitly permitting only authorized traffic sent to infrastructure devices in accordance with existing security policies and configurations. The following example can be adapted to the network: !-- The 192.168.1.0/24 network and the 172.16.1.1 host are trusted. !-- Everything else is not trusted. The following access list is used !-- to determine what traffic needs to be dropped by a control plane !-- policy (the CoPP feature.) If the access list matches (permit) !-- then traffic will be dropped and if the access list does not !-- match (deny) then traffic will be processed by the router. access-list 100 deny udp 192.168.1.0 0.0.0.255 any eq 5060 access-list 100 deny tcp 192.168.1.0 0.0.0.255 any eq 5060 access-list 100 deny tcp 192.168.1.0 0.0.0.255 any eq 5061 access-list 100 deny udp host 172.16.1.1 any eq 5060 access-list 100 deny tcp host 172.16.1.1 any eq 5060 access-list 100 deny tcp host 172.16.1.1 any eq 5061 access-list 100 permit udp any any eq 5060 access-list 100 permit tcp any any eq 5060 access-list 100 permit tcp any any eq 5061 !-- Permit (Police or Drop)/Deny (Allow) all other Layer3 and Layer4 !-- traffic in accordance with existing security policies and !-- configurations for traffic that is authorized to be sent !-- to infrastructure devices. !-- Create a Class-Map for traffic to be policed by !-- the CoPP feature. class-map match-all drop-sip-class match access-group 100 !-- Create a Policy-Map that will be applied to the !-- Control-Plane of the device. policy-map drop-sip-traffic class drop-sip-class drop !-- Apply the Policy-Map to the Control-Plane of the !-- device. control-plane service-policy input drop-sip-traffic Warning: Because SIP can use UDP as a transport protocol, it is possible to easily spoof the IP address of the sender, which may defeat access control lists that permit communication to these ports from trusted IP addresses. In the above CoPP example, the access control entries (ACEs) that match the potential exploit packets with the "permit" action result in these packets being discarded by the policy-map "drop" function, while packets that match the "deny" action (not shown) are not affected by the policy-map drop function. Additional information on the configuration and use of the CoPP feature can be found at http://www.cisco.com/web/about/security/intelligence/coppwp_gs.html and http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt(a)cisco.com or security-alert(a)cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac(a)cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. This vulnerability was discovered during handling of customer service requests. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce(a)cisco.com * first-bulletins(a)lists.first.org * bugtraq(a)securityfocus.com * vulnwatch(a)vulnwatch.org * cisco(a)spot.colorado.edu * cisco-nsp(a)puck.nether.net * full-disclosure(a)lists.grok.org.uk * comp.dcom.sys.cisco(a)newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2009-March-25 | public | | | | release | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.… This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAknKUboACgkQ86n/Gc8U/uCi+gCfZaAw0PuDJWKg2K42vzfdJe+h XHwAnRRdQQTeuhmW0liolMtU1ZzKg+Ke =VvxT -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability
by Cisco Systems Product Security Incident Response Team 25 Mar '09

25 Mar '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability Advisory ID: cisco-sa-20090325-udp http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml Revision 1.0 For Public Release 2009 March 25 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= Several features within Cisco IOS Software are affected by a crafted UDP packet vulnerability. If any of the affected features are enabled, a successful attack will result in a blocked input queue on the inbound interface. Only crafted UDP packets destined for the device could result in the interface being blocked, transit traffic will not block the interface. Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. This advisory is posted at the following link: http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml Note: The March 25, 2009, Cisco IOS Security Advisory bundled publication includes eight Security Advisories. All of the advisories address vulnerabilities in Cisco IOS Software. Each advisory lists the releases that correct the vulnerability or vulnerabilities in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published in Cisco Security Advisories on March 25, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090325-bundle.shtml Individual publication links are listed below: * Cisco IOS cTCP Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ctcp.shtml * Cisco IOS Software Multiple Features IP Sockets Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml * Cisco IOS Software Mobile IP and Mobile IPv6 Vulnerabilities http://www.cisco.com/warp/public/707/ cisco-sa-20090325-mobileip.shtml * Cisco IOS Software Secure Copy Privilege Escalation Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-scp.shtml * Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.shtml * Cisco IOS Software Multiple Features Crafted TCP Sequence Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml * Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml * Cisco IOS Software WebVPN and SSLVPN Vulnerabilities http://www.cisco.com/warp/public/707/cisco-sa-20090325-webvpn.shtml Affected Products ================= Vulnerable Products +------------------ Devices running affected versions of Cisco IOS Software and Cisco IOS XE Software are affected when running any of the following features: * IP Service Level Agreements (SLA) Responder * Session Initiation Protocol (SIP) * H.323 Annex E Call Signaling Transport * Media Gateway Control Protocol (MGCP) Details on how to see if the affected feature is enabled on a device, is provided within the details section of this advisory. To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the "show version" command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the "show version" command or may provide different output. The following example identifies a Cisco product that is running Cisco IOS Software Release 12.3(26) with an installed image name of C2500-IS-L: Router#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by cisco Systems, Inc. Compiled Mon 17-Mar-08 14:39 by dchih <output truncated> The following example shows a product that is running Cisco IOS Software release 12.4(20)T with an image name of C1841-ADVENTERPRISEK9-M: Router#show version Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 10-Jul-08 20:25 by prod_rel_team <output truncated> Additional information about Cisco IOS Software release naming conventions is available in "White Paper: Cisco IOS Reference Guide" at the following link: http://www.cisco.com/warp/public/620/1.html Products Confirmed Not Vulnerable +-------------------------------- The following products and features are not affected by this vulnerability: * Cisco IOS XR Software * Service Assurance Agent (SAA) * Response Time Reporter (RTR) * No other feature or protocol on Cisco IOS is known to be affected No other Cisco products are currently known to be affected by this vulnerability. Details ======= A device is vulnerable if any of the features outlined below is configured and their associated UDP port number accessible. For each feature, in addition to inspecting the Cisco IOS device for vulnerable configurations, administrators can also use some show commands to determine if the Cisco IOS device is running processes that handle the UDP service, or if the device is listening on the affected UDP ports. Different versions of Cisco IOS Software have different methods of showing the UDP ports on which the Cisco IOS Software device is listening. The "show ip sockets" or "show udp" commands can be used to determine these ports. For each feature, one example is given using the above commands to show the affected UDP port number. Successful exploitation of this vulnerability can block an interface on the device. The interface type is not relevant for this vulnerability so all Ethernet based interfaces, ATM, Serial, POS and other types of interfaces can be affected. All defined sub interfaces under a main physical interface are affected if the main interface is blocked. If the attack originates over a sub interface, the main interface will block. A blocked interface will stop receiving any subsequent packets until it is unblocked. All other interfaces are not affected and they will continue receiving and transmitting packets. Only packets destined for a reachable configured IP address on any interface of the device can exploit this vulnerability. Transit traffic will not exploit this vulnerability. A symptom of this type of blocked queue is the failure of control-plane protocols such as routing protocols (OSPF, EIGRP, BGP, ISIS, etc.) and MPLS TDP/LDP to properly establish connections over an affected interface. Transit traffic may be affected once protocol timers expire on the affected device. In order to identify a blocked input interface, issue the "show interfaces" command, and search for the Input Queue line. The size of the input queue can continue to increase. If the current size, which is 76 in the example below, is equal or larger than the maximum size (default being 75), the input queue may be blocked. It is possible that a device receives a high rate of traffic destined to the control plane, and the full queue is only a transient event. In order to verify if the interface is actually blocked, shut down the interface with the shutdown interface configuration command and examine the input queue. If the input queue does not display 0 packets, the interface is blocked. Router#show interface ethernet 0/0 Ethernet0/0 is up, line protocol is up Hardware is AmdP2, address is 0050.500e.f1e0 (bia 0050.500e.f1e0) Internet address is 192.168.0.1/24 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255 Encapsulation ARPA, loopback not set, keepalive set (10 sec) ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:41, output 00:00:07, output hang never Last clearing of "show interface" counters 00:07:18 Input queue: 76/75/1091/0 (size/max/drops/flushes); Total output drops: 0 IP Service Level Agreements (SLAs) Responder +------------------------------------------- Devices configured with the Cisco IOS IP Service Level Agreements (SLAs) Responder for User Datagram Protocol (UDP) echo or jitter operations feature are vulnerable. Any device configured to act as a responder is vulnerable. The following shows two different vulnerable configurations. The first being a generic IP SLA responder: ip sla responder or ip sla monitor responder The following shows this second configuration with a more specific UDP responder configured: ip sla responder ip sla responder udp-echo ipaddress 10.10.10.10 port 1025 Service Assurance Agent (SAA) and Response Time Reporter (RTR) feature are "not" affected and use the "rtr" CLI command syntax. The following example shows a configuration, which is not vulnerable: rtr responder The following example shows a device listening on the default IP SLA control channel with the affected UDP port 1967. Router#show udp Proto Remote Port Local Port In Out Stat TTY OutputIF 17 0.0.0.0 0 10.2.6.1 1967 0 0 211 0 Further information about Cisco IOS IP SLAs is available in "Cisco IOS IP SLAs Configuration Guide, Release 12.4 - Cisco IOS IP SLAs Overview" at the following link: http://www.cisco.com/en/US/docs/ios/12_4/ip_sla/configuration/guide/hsoverv… Session Initiation Protocol (SIP) +-------------------------------- Note: For customers with devices enabled with SIP, please also consult the document "Cisco Security Advisory: Cisco IOS Session Initiation Protocol Denial of Service Vulnerability" at the following link: http://www.cisco.com/warp/public/707/cisco-sa-20090325-sip.html Cisco devices that process SIP messages are affected. Recent versions of Cisco IOS Software do not process SIP messages by default. Creating a "dial peer" via the command "dial-peer voice" with any option will start the SIP processes and cause Cisco IOS Software to begin processing SIP messages. Several features within Cisco Call Manager Express, such as ePhones, once configured will also automatically start the SIP process and the device will begin processing SIP messages. It is recommended if the device is running any voice configurations to confirm the existence of the SIP process with the "show ip socket" or "show udp" command. The following is one example of an affected configuration: dial-peer voice <Voice dial-peer tag> voip ... ! Note: Older versions of Cisco IOS Software were affected by a bug that caused Cisco IOS Software to process SIP messages even without being configured for SIP operation. Please refer to "Cisco Security Advisory: SIP Packets Reload IOS Devices with support for SIP" at the following link: http://www.cisco.com/warp/public/707/cisco-sa-20070131-sip.shtml The following example shows a device that will process SIP messages, on the default affected UDP port 5060: Router#show ip socket Proto Remote Port Local Port In Out Stat TTY OutputIF 17 0.0.0.0 0 192.168.0.2 5060 0 0 211 0 Further information about SIP, is available in the "Cisco IOS SIP Configuration Guide" at the following link: http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/vvf… H.323 Annex E Call Signaling Transport +------------------------------------- Cisco devices that are configured to support H.323 are affected. The affected protocol is H.323 Annex E Call Signaling Transport over UDP. ITU-T recommendation H.323 Annex E describes the signaling framework and wire-protocol for transporting H.225.0 call signaling messages over UDP. Recent versions of Cisco IOS Software do not open H.225.0 UDP port by default. Creating a "dial peer" via the command "dial-peer voice" with any option will open the H.225.0 UDP port. Several features within Cisco Call Manager Express, such as ePhones, once configured will also automatically start the H.323 process and the device will begin processing H.323 packets. It is recommended if the device is running any voice configurations to confirm the existence of the H.323 process with the "show ip socket" or "show udp" command. The following is one example of an affected configuration: dial-peer voice <Voice dial-peer tag> voip ... ! Note: Older versions of Cisco IOS Software were affected by a bug that caused Cisco IOS Software to listen on H.323 ports without being configured for H.323 operation. Please refer to Cisco bug ID: CSCsb25337 The following example shows a device that will process H.225.0 packets, on the default affected UDP port 2517: Router#show ip socket Proto Remote Port Local Port In Out Stat TTY OutputIF 17 0.0.0.0 0 192.168.0.2 2517 0 0 211 0 Further information about H.323, is available in the "Cisco IOS H.323 Configuration Guide" at the following link: http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/cisco_ios_h323_configuration… Media Gateway Control Protocol (MGCP) +------------------------------------ Devices configured with the MGCP feature are vulnerable. MGCP is enabled globally with the command "mgcp". The default listening port for MGCP is UDP 2427. The following example shows a vulnerable configuration: mgcp The following example shows a device that will process MGCP packets on the affected UDP ports: Router#show ip socket Proto Remote Port Local Port In Out Stat TTY OutputIF 17 192.168.0.1 2427 10.66.91.138 2427 0 0 211 0 Further information about MGCP is available in the "Configuring the Cisco IOS MGCP Gateway reference" at the following link: http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note0918… This vulnerability is documented in the following Cisco Bug ID: CSCsk64158 and has been assigned the Common Vulnerabilities and Exposures (CVE) identifiers CVE-2009-0631. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerability in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsk64158: Cisco IOS Software Multiple Features Crafted UDP Packet Vulnerability CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of this vulnerability may cause the inbound interface to be blocked and will silently drop any received traffic. A reload of the device is required to restore normal functionality. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. +-------------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+------------------------------------------------------| | Affected | | Recommended | | 12.0-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DA | Vulnerable; first fixed in 12.2DA | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0DC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0S | 12.0(32)S12 | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SC | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SL | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0SP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0ST | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SX | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | 12.0SY | 12.0(32)SY8 | 12.0(32)SY8 | |------------+-------------------------------------+----------------| | 12.0SZ | Vulnerable; first fixed in 12.0S | 12.0(32)S12 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0W | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.0WC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.0WT | Not Vulnerable | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.0XF | Not Vulnerable | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Releases prior to 12.0(4)XI2 are | 12.4(18e) | | | vulnerable, release 12.0(4)XI2 and | | | 12.0XI | later are not vulnerable; first | 12.4(23a); | | | fixed in 12.4 | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XK | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XN | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.0XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.1-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1AA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1AX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1AY | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1AZ | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.1CX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1DA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1DB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1DC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1E | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.1EA | 12.1(22)EA13 | 12.1(22)EA13 | |------------+-------------------------------------+----------------| | 12.1EB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.2(33)SCB1 | | 12.1EC | Vulnerable; first fixed in 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | 12.1EO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EU | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.1EV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EW | Vulnerable; migrate to 12.2SGA | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1EX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1EY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.1EZ | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1GA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1GB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XF | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XI | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XU | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XY | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1XZ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Releases prior to 12.1(5)YE6 are | 12.4(18e) | | | vulnerable, release 12.1(5)YE6 and | | | 12.1YE | later are not vulnerable; first | 12.4(23a); | | | fixed in 12.4 | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YF | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.1YH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.1YI | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.1(22)EA13 | | 12.1YJ | Vulnerable; first fixed in 12.1EA | | | | | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.2-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2B | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2BC | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2BX | Vulnerable; migrate to 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BY | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2BZ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2CX | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2CY | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | 12.2CZ | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | 12.2(12)DA14; Available on | | | 12.2DA | 30-JUL-2009 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2DD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2DX | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2EW | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2EWA | Vulnerable; first fixed in 12.2SG | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2EX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2EY | 12.2(44)EY | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2EZ | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FX | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FY | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2FZ | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2IRA | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2IRB | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXA | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXB | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXC | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXD | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXE | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXF | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to any release | 12.2(18)IXH; | | 12.2IXG | in 12.2IXH | Available on | | | | 31-MAR-2009 | |------------+-------------------------------------+----------------| | 12.2JA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2JK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2MB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2MC | 12.2(15)MC2m | 12.2(15)MC2m | |------------+-------------------------------------+----------------| | 12.2S | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | 12.2(31)SB14 | | | | | | | 12.2SB | 12.2(33)SB3 | 12.2(33)SB4 | | | | | | | 12.2(28)SB13 | | |------------+-------------------------------------+----------------| | 12.2SBC | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2SCA | Vulnerable; first fixed in 12.2SCB | 12.2(33)SCB1 | |------------+-------------------------------------+----------------| | 12.2SCB | 12.2(33)SCB1 | 12.2(33)SCB1 | |------------+-------------------------------------+----------------| | | 12.2(46)SE2 | | | | | | | 12.2SE | 12.2(44)SE5 | 12.2(44)SE6 | | | | | | | 12.2(50)SE | | |------------+-------------------------------------+----------------| | 12.2SEA | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEB | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEC | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SED | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEE | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEF | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | 12.2SEG | Vulnerable; first fixed in 12.2SE | 12.2(44)SE6 | |------------+-------------------------------------+----------------| | | | 12.2(52)SG; | | 12.2SG | 12.2(50)SG | Available on | | | | 15-MAY-2009 | |------------+-------------------------------------+----------------| | 12.2SGA | 12.2(31)SGA9 | 12.2(31)SGA9 | |------------+-------------------------------------+----------------| | 12.2SL | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2SM | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SQ | 12.2(44)SQ1 | | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2SRA | Vulnerable; first fixed in 12.2SRC | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | | | Available on | | | | 18-MAY-2009 | | 12.2SRB | Vulnerable; first fixed in 12.2SRC | | | | | 12.2(33)SRB5a; | | | | Available on | | | | 3-April-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2SRC | 12.2(33)SRC3 | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | 12.2SRD | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2STE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2SU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.2SV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SVE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2SX | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXA | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXB | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXD | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXE | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2SXF | 12.2(18)SXF16 | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | | 12.2(33)SXH5; Available on | 12.2(33)SXH5; | | 12.2SXH | 20-APR-2009 | Available on | | | | 20-APR-2009 | |------------+-------------------------------------+----------------| | 12.2SXI | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2SY | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2SZ | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2T | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2TPC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XB | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XC | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XD | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | Vulnerable; migrate to 12.2SCB or | 12.2(33)SCB1 | | 12.2XF | 12.3BC | | | | | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XG | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XI | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XJ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XK | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XL | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XM | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.2(33)SB4 | | 12.2XN | Vulnerable; first fixed in 12.2SRC | | | | | 12.2(33)SRD1 | |------------+-------------------------------------+----------------| | 12.2XNA | Vulnerable; migrate to any release | 12.2(33)SRD1 | | | in 12.2SRD | | |------------+-------------------------------------+----------------| | 12.2XNB | 12.2(33)XNB1 | 12.2(33)XNB3 | |------------+-------------------------------------+----------------| | 12.2XNC | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2XO | 12.2(46)XO | 12.2(46)XO | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XQ | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XS | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XT | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XU | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XV | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2XW | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2YA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YE | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YF | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YG | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YH | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YJ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YK | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2YM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YN | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YO | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2YP | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2YQ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YR | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YS | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.2YT | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YU | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2YZ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZA | Vulnerable; first fixed in 12.2SXF | 12.2(18)SXF16 | |------------+-------------------------------------+----------------| | 12.2ZB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZD | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2ZE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2ZF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.2ZG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.2ZH | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.2ZJ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZP | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.2(33)SRC4; | | 12.2ZU | Vulnerable; first fixed in 12.2SXH | Available on | | | | 18-MAY-2009 | |------------+-------------------------------------+----------------| | 12.2ZX | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.2ZY | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.2ZYA | 12.2(18)ZYA1 | 12.2(18)ZYA1 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.3-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3 | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3B | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3BC | 12.3(23)BC6 | 12.3(23)BC6 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3BW | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3EU | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.3JA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JEC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3JK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3JL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3JX | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3T | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3TPC | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.3VA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XA | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XD | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XE | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XF | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XI | Vulnerable; first fixed in 12.2SB | 12.2(33)SB4 | |------------+-------------------------------------+----------------| | 12.3XJ | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XL | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(18e) | | | | | | 12.3XR | Vulnerable; first fixed in 12.4 | 12.4(23a); | | | | Available on | | | | 30-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XU | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3XW | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XX | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XY | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3XZ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YD | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YF | Vulnerable; first fixed in 12.3YX | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YG | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YH | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YI | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YM | 12.3(14)YM13 | 12.3(14)YM13 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YQ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YS | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3YT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.3YU | Vulnerable; first fixed in 12.4XB | 12.4(22)T1 | |------------+-------------------------------------+----------------| | 12.3YX | 12.3(14)YX14 | 12.3(14)YX14 | |------------+-------------------------------------+----------------| | 12.3YZ | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.3ZA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+-------------------------------------+----------------| | | 12.4(23) | 12.4(18e) | | | | | | 12.4 | 12.4(18e) | 12.4(23a); | | | | Available on | | | 12.4(23a); Available on 30-APR-2009 | 30-APR-2009 | |------------+-------------------------------------+----------------| | 12.4JA | 12.4(16b)JA1 | | |------------+-------------------------------------+----------------| | 12.4JDA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JK | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JL | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JMA | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JMB | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4JX | Vulnerable; first fixed in 12.4JA | | |------------+-------------------------------------+----------------| | 12.4MD | 12.4(11)MD7 | 12.4(11)MD7 | |------------+-------------------------------------+----------------| | 12.4MR | 12.4(19)MR1 | 12.4(19)MR2 | |------------+-------------------------------------+----------------| | 12.4SW | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | | 12.4(15)T8 | | | | | 12.4(22)T1 | | | 12.4(20)T2 | | | 12.4T | | 12.4(15)T9; | | | 12.4(22)T | Available on | | | | 29-APR-2009 | | | 12.4(15)T9; Available on | | | | 29-APR-2009 | | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XA | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | 12.4(15)T8 | | | 12.4XB | | 12.4(15)T9; | | | 12.4(20)T2 | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XC | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | 12.4(4)XD12; Available on | 12.4(4)XD12; | | 12.4XD | 27-MAR-2009 | Available on | | | | 27-MAR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XE | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XF | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | 12.4(15)T8 | 12.4(22)T1 | | | | | | 12.4XG | 12.4(20)T2 | 12.4(15)T9; | | | | Available on | | | 12.4(22)T1 | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XJ | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XK | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XL | 12.4(15)XL4 | 12.4(15)XL4 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XM | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XN | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XP | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XQ | 12.4(15)XQ2 | 12.4(15)XQ2 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XR | 12.4(15)XR4 | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XT | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XV | Vulnerable; contact TAC | | |------------+-------------------------------------+----------------| | 12.4XW | 12.4(11)XW10 | 12.4(11)XW10 | |------------+-------------------------------------+----------------| | | | 12.4(22)T1 | | | | | | 12.4XY | Vulnerable; first fixed in 12.4T | 12.4(15)T9; | | | | Available on | | | | 29-APR-2009 | |------------+-------------------------------------+----------------| | 12.4XZ | 12.4(15)XZ2 | 12.4(15)XZ2 | |------------+-------------------------------------+----------------| | 12.4YA | 12.4(20)YA2 | 12.4(20)YA3 | |------------+-------------------------------------+----------------| | 12.4YB | Not Vulnerable | | |------------+-------------------------------------+----------------| | 12.4YD | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== The following mitigations have been identified for this vulnerability; only packets destined for any configured IP address on the device can exploit this vulnerability. Transit traffic will not exploit this vulnerability. Disable Affected Listening Ports +------------------------------- If an affected feature is not required it can be explicitly disabled. Once disabled confirm the listening UDP port has been closed by entering the CLI command "show udp" or "show ip socket". Some features may require a reload of the device after disabling the feature in order to close the listening UDP port. For SIP it is possible to disable UDP listening if only TCP services are required. The following example shows how to disable SIP from listening on its associated UDP port. Warning: When applying this workaround to devices that are processing MGCP or H.323 calls, the device will not allow the stopping SIP processing while active calls are being processed. When possible, this workaround should be implemented during a maintenance window when active calls can be briefly stopped. Enter configuration commands, one per line. End with CNTL/Z. Router(config)#sip-ua Router(config-sip-ua)#no transport udp Router(config-sip-ua)#end For SIP it is possible to bind the process to a privately-addressed interface, with the command below. This will cause SIP to only listen on the internal interface, which may assist in limiting the exposure of this vulnerability: voice service voip sip bind control source-interface <int> bind media source-interface <int> Infrastructure Access Control Lists +---------------------------------- Warning: Because the features in this vulnerability utilize UDP as a transport, it is possible to spoof the sender's IP address, which may defeat ACLs that permit communication to these ports from trusted IP addresses. Unicast RPF should be considered to be used in conjunction to offer a better mitigation solution. Although it is often difficult to block traffic that transits a network, it is possible to identify traffic that should never be allowed to target infrastructure devices and block that traffic at the border of networks. Infrastructure Access Control Lists (iACLs) are a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for this specific vulnerability. The iACL example below should be included as part of the deployed infrastructure access-list which will protect all devices with IP addresses in the infrastructure IP address range: !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- !--- Feature: IP SLAs UDP Responder !--- access-list 150 permit udp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 1967 !--- Deny IP SLAs UDP Responder traffic from all other sources !--- destined to infrastructure addresses. access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 1967 !--- !--- Feature: Session Initiation Protocol (SIP) !--- access-list 150 permit udp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 5060 !--- Deny SIP traffic from all other sources destined !--- to infrastructure addresses. access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 5060 !--- !--- Feature: H.323 Call Signaling !--- access-list 150 permit udp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 2517 !--- Deny H.323 Call Signaling traffic from all other sources !--- destined to infrastructure addresses. access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 2517 !--- !--- Feature: Media Gateway Control Protocol (MGCP) !--- access-list 150 permit udp TRUSTED_SOURCE_ADDRESSES WILDCARD INFRASTRUCTURE_ADDRESSES WILDCARD eq 2427 !--- Deny MGCP traffic from all other sources destined !--- to infrastructure addresses. access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES WILDCARD eq 2427 !--- Permit/deny all other Layer 3 and Layer 4 traffic in !--- accordance with existing security policies and !--- configurations. Permit all other traffic to transit the !--- device. access-list 150 permit ip any any !--- Apply access-list to all interfaces (only one example !--- shown) interface serial 2/0 ip access-group 150 in The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists and is available at the following link http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a0… Control Plane Policing +--------------------- Warning: Because the features in this vulnerability utilizes UDP as a transport, it is possible to spoof the sender's IP address, which may defeat ACLs that permit communication to these ports from trusted IP addresses. Unicast RPF should be considered to be used in conjunction to offer better mitigation solution. Control Plane Policing (CoPP) can be used to block untrusted UDP traffic to the device. Cisco IOS software releases 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T support the CoPP feature. CoPP can be configured on a device to protect the management and control planes and minimize the risk and effectiveness of direct infrastructure attacks by explicitly permitting only authorized traffic that is sent to infrastructure devices in accordance with existing security policies and configurations. The CoPP example below should be included as part of the deployed CoPP which will protect all devices with IP addresses in the infrastructure IP address range. !--- !--- Only sections pertaining to features enabled on the device !--- need be configured. !--- !--- !--- Feature: IP SLAs UDP Responder !--- access-list 150 deny udp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 1967 !--- !--- Deny IP SLAs UDP Responder traffic from all other sources !--- destined to the device control plane. !--- access-list 150 permit udp any any eq 1967 !--- !--- Feature: Session Initiation Protocol (SIP) !--- access-list 150 deny udp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 5060 !--- !--- Deny SIP traffic from all other sources destined !--- to the device control plane. !--- access-list 150 permit udp any any eq 5060 !--- !--- Feature: H.323 Call Signaling !--- access-list 150 deny udp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2517 !--- !--- Deny H.323 call signaling traffic from all other sources !--- destined to the device control plane. !--- access-list 150 permit udp any any eq 2517 !--- !--- Feature: Media Gateway Control Protocol (MGCP) !--- access-list 150 deny udp TRUSTED_SOURCE_ADDRESSES WILDCARD any eq 2427 !--- !--- Deny MGCP traffic from all other sources destined !--- to the device control plane. !--- access-list 150 permit udp any any eq 2427 !--- !--- Permit (Police or Drop)/Deny (Allow) all other Layer3 and !--- Layer4 traffic in accordance with existing security policies !--- and configurations for traffic that is authorized to be sent !--- to infrastructure devices !--- Create a Class-Map for traffic to be policed by !--- the CoPP feature !--- class-map match-all drop-udp-class match access-group 150 !--- !--- Create a Policy-Map that will be applied to the !--- Control-Plane of the device. !--- policy-map drop-udp-traffic class drop-udp-class drop !--- !--- Apply the Policy-Map to the !--- Control-Plane of the device !--- control-plane service-policy input drop-udp-traffic In the above CoPP example, the access control list entries (ACEs) that match the potential exploit packets with the "permit" action result in these packets being discarded by the policy-map "drop" function, while packets that match the "deny" action (not shown) are not affected by the policy-map drop function. Please note that the policy-map syntax is different in the 12.2S and 12.0S Cisco IOS trains: policy-map drop-udp-traffic class drop-udp-class police 32000 1500 1500 conform-action drop exceed-action drop Additional information on the configuration and use of the CoPP feature can be found in the documents, "Control Plane Policing Implementation Best Practices" and "Cisco IOS Software Releases 12.2S - Control Plane Policing" at the following links: http://www.cisco.com/web/about/security/intelligence/coppwp_gs.html and http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html Additional mitigations that can be deployed on Cisco devices within the network are available in the "Cisco Applied Mitigation Bulletin" companion document for this advisory at the following link: http://www.cisco.com/warp/public/707/cisco-amb-20090325-sip-and-udp.shtml Exploit Detection +---------------- It is possible to detect blocked interface queues with an Cisco IOS Embedded Event Manager (EEM) policy. EEM provides event detection and reaction capabilities on a Cisco IOS device. EEM can alert administrators of blocked interfaces with email, a syslog message, or a Simple Network Management Protocol (SNMP) trap. A sample EEM policy that uses syslog to alert administrators of blocked interfaces is available at Cisco Beyond, an online community dedicated to EEM. A sample script is available at the following link: http://forums.cisco.com/eforum/servlet/EEM?page=eem&fn=script&scriptId=981 Further information about EEM is available from Cisco.com at the following link: http://www.cisco.com/en/US/products/ps6815/products_ios_protocol_group_home… Obtaining Fixed Software ======================== Cisco has released free software updates that address this vulnerability. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml Do not contact psirt(a)cisco.com or security-alert(a)cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com. Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac(a)cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. This vulnerability was discovered by Cisco during routine internal testing. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20090325-udp.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce(a)cisco.com * first-bulletins(a)lists.first.org * bugtraq(a)securityfocus.com * vulnwatch(a)vulnwatch.org * cisco(a)spot.colorado.edu * cisco-nsp(a)puck.nether.net * full-disclosure(a)lists.grok.org.uk * comp.dcom.sys.cisco(a)newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2009-March-25 | public | | | | release. | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.… This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAknKUdAACgkQ86n/Gc8U/uB5UACfTuBFTIs6/V/FKPdLnLYCvGXF CyIAn3XqDhmEqM24yznj0IHjMPpGQ7Y2 =mpQF -----END PGP SIGNATURE-----

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Re: Yahoo and their mail filters..
by Suresh Ramasubramanian 25 Mar '09

25 Mar '09

On Wed, Feb 25, 2009 at 5:02 PM, Niall Donegan <niall(a)blacknight.com> wrote: > > Another interesting side effect of that is email forwarder accounts. > Take a user who gets a domain on our shared hosting setup and forwards > the email for certain users to a Yahoo account. If those mails are > marked as spam, it seems to be our server that gets blacklisted rather > than the originating server. > No surprise. Guess whose IP is the one handing off to yahoo? If you have forwarding users - * Spam filter them to reject spam rather than simply tag and forward it. * Isolate your forwarding traffic through a single IP, Let ISPs know. > Feedback loops often aren't that useful either. We're on the AOL Scomp > feedback loop, and we've often got fairly personal email sent to our > abuse desk because the users simply press spam rather than delete. You have a far smaller userbase, and a userbase you know. For us, with random nigerians and other spammers signing up / trying to sign up all the time, FBLs are invaluable as a realtime notification of spam issues. And as I said random misdirected spam reports wont trigger a block as much as your leaking forwarded spam. Or your getting a hacked cgi/php or a spammer installed direct to mx spamware. [so if you are cpanel - smtp tweak/csf firewall and mod_security for apache should be default on your install if you havent already done so] -srs

23 46

Akamai wierdness
by John Palmer (NANOG Acct) 25 Mar '09

25 Mar '09

Most of the sites served by Akamai seem to be wacky this afternoon from Chicago. Probably the March Madness stuff, but its really bad today - Chicagotribune.com wont load at all from here and SunTimes.com is missing all of its images. Are others seeing this problem from other locations? Getting alot of support calls from folks....

7 12

Re: Yahoo and their mail filters..
by Brandon Butterworth 24 Mar '09

24 Mar '09

> The recipient obviously didn't think they wanted the email. For > mailing lists/broadcasters, this means it's an opt out request. That would be fine, we could auto process them and remove those addresses from any lists they've joined (might be a few false unsubscribes but after they've resubscribed a few times they might figure it's not a good idea to report it as spam) but redacted(a)aol.com isn't on any of our lists. If this was to be more than a token system we'd be happy to support a specific unsubscribe message for those than wished to leave our lists and didn't mind supplying details. We'd also happily supply details of our lists so their system would know there is no point treating it as spam "you are reporting a mailing list you've subscribed to as spam, do you want ot unsubscribe?" etc. I'm sure most on the list could cook up a system to do this properly. brandon

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