- NANOG - lists.nanog.org

Re: Gmail Down?
by Fouant, Stefan 24 Sep '09

24 Sep '09

Donw here in Northern Virgina. GMAIL for Mobile is not working as well. Stefan Fouant Neustar, Inc. / Principal Engineer 46000 Center Oak Plaza Sterling, VA 20166 Office: +1.571.434.5656 ▫ Mobile: +1.202.210.2075 ▫ GPG ID: 0xB5E3803D ▫ stefan.fouant(a)neustar.biz ----- Original Message ----- From: YLB <yoann(a)ext.mdpns.org> To: Chris Gotstein <chris(a)uplogon.com> Cc: nanog(a)nanog.org <nanog(a)nanog.org> Sent: Thu Sep 24 11:11:27 2009 Subject: Re: Gmail Down? Yes, the same here (Paris, France)! YLB. yoann(a)yoann.info 2009/9/24 Chris Gotstein <chris(a)uplogon.com>: > Anyone else seeing Google's Gmail down right now? Seems to have been > down since 10am CST. We are connected through Chicago. > downforeveryoneorjustme.com is also reporting it's down. > > -- > ---- ---- ---- ---- > Chris Gotstein, Sr Network Engineer, UP Logon/Computer Connection UP > http://uplogon.com | +1 906 774 4847 | chris(a)uplogon.com > >

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hotmail admin
by Rens 24 Sep '09

24 Sep '09

Somebody here that is administrator of mails servers of hotmail? Or if anyone knows how to contact them? Please contact my offline

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hotmail.com admin
by Rens 24 Sep '09

24 Sep '09

Somebody here that is administrator of mails servers of hotmail.com? Or if anyone knows how to contact them? Please contact my offline

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American Fiber Systems
by Marian Stasney 23 Sep '09

23 Sep '09

If any HTTP or last mile providers have worked with this provider, please contact me off-list at the addresses below. Your quick response is greatly appreciated. mks Marian Stasney Desk: 512-853-9598 Cell: 512-845-1546 marian(a)stasney.org

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BT US to UK
by Marshall Eubanks 23 Sep '09

23 Sep '09

Is anyone else seeing issues with British Telecom from UK to the US ? I have heard rumors that undersea fiber links might be involved. Regards Marshall

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Cisco Security Advisory: Cisco IOS Software Object-group Access Control List Bypass Vulnerability
by Cisco Systems Product Security Incident Response Team 23 Sep '09

23 Sep '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Object-group Access Control List Bypass Vulnerability Advisory ID: cisco-sa-20090923-acl Revision 1.0 For Public Release 2009 September 23 +--------------------------------------------------------------------- Summary ======= A vulnerability exists in Cisco IOS� software where an unauthenticated attacker could bypass access control policies when the Object Groups for Access Control Lists (ACLs) feature is used. Cisco has released free software updates that address this vulnerability. There are no workarounds for this vulnerability other than disabling the Object Groups for ACLs feature. This advisory is posted at: http://www.cisco.com/warp/public/707/cisco-sa-20090923-acl.shtml Note: The September 23, 2009, Cisco IOS Security Advisory bundled publication includes eleven Security Advisories. Ten of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published on September 23, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090923-bundle.shtml Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Advisory Bundled Publication" at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html Affected Products ================= Vulnerable Products +------------------ Any Cisco device configured with ACLs using the object group feature and running an affected Cisco IOS software version is affected by this vulnerability. Note: The Object Groups for ACLs feature was introduced in Cisco IOS software version 12.4(20)T. To verify whether object groups are configured in a Cisco IOS device, use the "show object-group" command in user EXEC or privileged EXEC mode. The following example displays a sample output from the "show object-group" command when object groups are configured: Router# show object-group Network object group my_host_group host 172.18.104.123 Service object group my_allowed_services tcp eq www tcp eq 443 Alternatively, administrators can also use the "show running config | include ^ (permit|deny) .*object-group" command to verify whether object groups are configured, as shown in the following example: Router#show running-config | include ^ (permit|deny) .*object-group permit object-group my_allowed_services host 10.10.1.1 host 10.20.1.1 permit tcp any object-group my_host_group eq 22 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 Products Confirmed Not Vulnerable +-------------------------------- Cisco devices that are not configured with object groups are not vulnerable. Cisco IOS XE Software and Cisco IOS XR Software are not affected by this vulnerability. No other Cisco products are currently known to be affected by this vulnerability. Details ======= In Cisco IOS Software an object group can contain a single object (such as a single IP address, network, or subnet) or multiple objects (such as a combination of multiple IP addresses, networks, or subnets). In an ACL that is based on an object group, administrators can create a single access control entry (ACE) that uses an object group name instead of creating many ACEs, which each would require a different IP address. A similar object group, such as a protocol port group, can be extended to limit access to a set of applications for a user group to a server group. A vulnerability exists in Cisco IOS Software that could allow an unauthenticated attacker to bypass access control policies when the Object Groups for ACLs feature is used. Note: The Object Groups for ACLs feature was introduced in Cisco IOS software version 12.4(20)T. This vulnerability is documented in the following Cisco Bug IDs: * CSCsx07114 * CSCsu70214 * CSCsw47076 * CSCsv48603 * CSCsy54122 * CSCsu50252 This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) identifier CVE-2009-2862. 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 CSCsx07114, CSCsu70214, CSCsw47076, CSCsv48603, CSCsy54122, CSCsu50252 - Object-group Access Control List Bypass CVSS Base Score - 4.3 Access Vector - Network Access Complexity - Medium Authentication - None Confidentiality Impact - Parital Integrity Impact - None Availability Impact - none CVSS Temporal Score - 3.6 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability may allow an attacker to access resources that should be protected by the Cisco IOS device. 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 12.1 based releases. | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.3-Based | First Fixed Release | Release | | Releases | | | |-------------------------------------------------------------------| | There are no affected 12.3 based releases. | |-------------------------------------------------------------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+---------------------------------------+--------------| | 12.4 | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.4GC | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | 12.4JA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JDA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JDC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JDD | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JK | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JL | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JMA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JMB | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JX | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(11)MD9 | | | | | | 12.4MD | 12.4(22)MD1 | 12.4(15)MD3 | | | | | | | | 12.4(22)MD1 | |------------+---------------------------------------+--------------| | 12.4MDA | 12.4(22)MDA1 | 12.4(22)MDA1 | |------------+---------------------------------------+--------------| | 12.4MR | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4SW | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(20)T4 | | | 12.4(22)T2 | | | | | 12.4(22)T3 | | 12.4T | 12.4(20)T4 | | | | | 12.4(24)T2; | | | 12.4(24)T1 | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | 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 | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4XR | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4XT | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4XV | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4XW | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4XY | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(20)T4 | | | | | | | | 12.4(22)T3 | | 12.4XZ | Vulnerable; first fixed in 12.4T | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(22)T3 | | | | | | 12.4YA | Vulnerable; first fixed in 12.4T | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | 12.4YB | 12.4(22)YB4 | 12.4(22)YB4 | |------------+---------------------------------------+--------------| | 12.4YD | 12.4(22)YD1 | 12.4(22)YD1 | |------------+---------------------------------------+--------------| | 12.4YE | 12.4(22)YE1 | 12.4(22)YE1 | |------------+---------------------------------------+--------------| | 12.4YG | Not Vulnerable | | +-------------------------------------------------------------------+ Note: No Cisco IOS-XE or Cisco IOS Software Modularity releases are affected by this vulnerability. Workarounds =========== There are no workarounds for this vulnerability other than disabling the Object Groups for ACLs feature. 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 during 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-20090923-acl.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-September-23 | 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----- iD8DBQFKukF586n/Gc8U/uARAuXEAJ99dU6Wi1fZMY1yNgedSCx4/+0p8wCeOSKF HmMwzq017QkqDzBFo/JH6DQ= =XJAG -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerability
by Cisco Systems Product Security Incident Response Team 23 Sep '09

23 Sep '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerability Advisory ID: cisco-sa-20090923-cm Revision 1.0 For Public Release 2009 September 23 +--------------------------------------------------------------------- Summary ======= Cisco Unified Communications Manager, which was formerly Cisco Unified CallManager, contains a denial of service (DoS) vulnerability in the Session Initiation Protocol (SIP) service. An exploit of this vulnerability may cause an interruption in voice services. Cisco has released free software updates that address this vulnerability. There are no workarounds for this vulnerability. This advisory is posted at: http://www.cisco.com/warp/public/707/cisco-sa-20090923-cm.shtml Note: Cisco IOS� Software is also affected by the vulnerability described in this advisory. A companion advisory for Cisco IOS software is available at: http://www.cisco.com/warp/public/707/cisco-sa-20090923-sip.shtml Note: The September 23, 2009, Cisco IOS Security Advisory bundled publication includes eleven Security Advisories. Ten of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published on September 23, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090923-bundle.shtml Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Advisory Bundled Publication" at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html Affected Products ================= The vulnerability described in this document applies to the Cisco Unified Communications Manager. Vulnerable Products +------------------ The following Cisco Unified Communications Manager versions are affected: * Cisco Unified Communications Manager 5.x versions prior to 5.1(3g) * Cisco Unified Communications Manager 6.x versions prior to 6.1(4) * Cisco Unified Communications Manager 7.0.x versions prior to 7.0(2a)su1 * Cisco Unified Communications Manager 7.1.x versions prior to 7.1(2) Cisco Unified CallManager versions 4.x are not affected by this vulnerability. Administrators of systems that are running Cisco Unified Communications Manager versions 5.x, 6.x and 7.x can determine the software version by viewing the main page of the Cisco Unified Communications Manager Administration interface. The software version can also be determined by running the "show version active" command via the command-line interface. A SIP trunk must be configured for the Cisco Unified CallManager server to begin listening for SIP messages on TCP and UDP port 5060 and TCP/5061. However, in Cisco Unified Communications Manager versions 5.x and later, the use of SIP as a call signaling protocol is enabled by default and cannot be disabled. Cisco IOS Software is also affected by this vulnerability, but it is associated with different Cisco bug IDs. A companion security advisory for Cisco IOS Software is available at: http://www.cisco.com/warp/public/707/cisco-sa-20090923-sip.shtml Products Confirmed Not Vulnerable +-------------------------------- Cisco Unified CallManager versions 4.x are not affected by this vulnerability. With the exception of Cisco IOS software, no other Cisco products are currently known to be affected by this vulnerability. Details ======= Cisco Unified Communications Manager is the call processing component of the Cisco IP Telephony solution that extends enterprise telephony features and functions to packet telephony network devices, such as IP phones, media processing devices, voice-over-IP gateways, and multimedia applications. SIP is a popular signaling protocol that manages 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 is flexible enough to accommodate other applications that require call setup and termination. SIP call signaling can use UDP (port 5060), TCP (port 5060), or Transport Layer Security (TLS; TCP port 5061) as the underlying transport protocol. A DoS vulnerability exists in the SIP implementation of the Cisco Unified Communications Manager. This vulnerability could be triggered when Cisco Unified Communications Manager processes crafted SIP messages. An exploit could lead to a reload of the main Cisco Unified Communications Manager process. This vulnerability is documented in Cisco bug ID CSCsz95423 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-2864. 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 CSCsz95423 - Crafted SIP packet may cause CM process to crash 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 that is described in this advisory could result in a reload of the Cisco Unified Communications Manager process, which may result in the interruption of voice services. 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. The following table contains the first fixed software release for this vulnerability. A device running a version of the given release in a specific row (less than the First Fixed Release) is known to be vulnerable. +---------------------------------------+ | Release | First Fixed Version | |-----------+---------------------------| | 4.x | Not Vulnerable | |-----------+---------------------------| | 5.x | 5.1(3g) | |-----------+---------------------------| | 6.x | 6.1(4) | |-----------+---------------------------| | 7.0.x | 7.0(2a)su1 | |-----------+---------------------------| | 7.1.x | 7.1(2) | +---------------------------------------+ Workarounds =========== There are no workarounds for this vulnerability. It is possible to mitigate this vulnerability by implementing filtering on screening devices and permitting TCP/UDP access to ports 5060 and TCP/5061 only from networks that require SIP access to Cisco Unified Communications Manager servers. If Cisco Unified Communications Manager does not need to provide SIP services, administrators can configure the Cisco Unified Communications Manager to listen for SIP messages on non standard ports. Use the following instructions to change the ports from their default values: Step 1 Log into the Cisco Unified CallManager Administration web interface. Step 2 Navigate to System > Cisco Unified CM and locate the appropriate Cisco Unified Communications Manager. Step 3 Change the fields SIP Phone Port and SIP Phone Secure Port fields to a non standard port and click Save. SIP Phone Port, which is 5060 by default, refers to the TCP and UDP ports where the Cisco Unified Communications Manager listens for normal SIP messages, and SIP Phone Secure Port, by default 5061, refers to the TCP port where the Cisco Unified Communications Manager listens for SIP over TLS messages. For additional information about this procedure, refer to the "Updating a Cisco Unified Communications Manager" section of the "Cisco Unified Communications Manager Administration Guide" at: http://www.cisco.com/en/US/docs/voice_ip_comm/cucmbe/admin/7_0_1/ccmcfg/b02… Note: For a SIP port change to take effect, the Cisco CallManager Service must be restarted. For information on how to restart the service, refer to the "Restarting the Cisco CallManager Service" section of the document at: http://www.cisco.com/en/US/docs/voice_ip_comm/cucmbe/admin/7_0_1/ccmcfg/b03… Additional mitigations that can be deployed on Cisco devices in the network are available in the companion document "Cisco Applied Mitigation Bulletin: Identifying and Mitigating Exploitation of the Denial of Service Vulnerabilities in Cisco Unified Communications Manager and Cisco IOS Software", which is available at the following location: http://www.cisco.com/warp/public/707/cisco-amb-20090923-voice.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 during 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-20090923-cm.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-September-23 | 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----- iD8DBQFKukGE86n/Gc8U/uARAp0sAJ9WOsbXB1KzPl36kQRFCcVHLqC9twCgiOQx lBVMS0I0ypD4TW2DBvWPkLM= =1qvW -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco Unified Communications Manager Express Vulnerability
by Cisco Systems Product Security Incident Response Team 23 Sep '09

23 Sep '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco Unified Communications Manager Express Vulnerability Advisory ID: cisco-sa-20090923-cme Revision 1.0 For Public Release 2009 September 23 +--------------------------------------------------------------------- Summary ======= Cisco IOS� devices that are configured for Cisco Unified Communications Manager Express (CME) and the Extension Mobility feature are vulnerable to a buffer overflow vulnerability. Successful exploitation of this vulnerability may result in the execution of arbitrary code or a Denial of Service (DoS) condition on an affected device. Cisco has released free software updates that address this vulnerability. This advisory is posted at: http://www.cisco.com/warp/public/707/cisco-sa-20090923-cme.shtml Note: The September 23, 2009, Cisco IOS Security Advisory bundled publication includes eleven Security Advisories. Ten of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published on September 23, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090923-bundle.shtml Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Advisory Bundled Publication" at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html Affected Products ================= Cisco IOS devices, including Cisco Unified Communications 500 Series, that are configured for Cisco Unified CME and the Extension Mobility feature are affected. Vulnerable Products +------------------ A Cisco IOS device that is configured for Cisco Unified CME and Extension Mobility contains the following output when the show running-config command is issued: ephone [Ethernet phone tag] ... logout-profile [logout-profile tag] 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 is displayed 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 devices that are configured for Survivable Remote Site Telephony (SRST) Mode are not affected. Cisco IOS XR is not affected. Cisco IOS XE is not affected. Cisco Unified Communications Manager is not affected. Cisco Unified CME is not affected unless configured to use the Extension Mobility feature. No other Cisco products are currently known to be affected by these vulnerabilities. Details ======= Cisco Unified CME is the call processing component of an enhanced IP telephony solution that is integrated into Cisco IOS. The Extension Mobility feature in Cisco Unified CME provides the benefit of phone mobility for end users. A user login service allows phone users to temporarily access a physical phone other than their own phone and utilize their personal settings, such as directory number, speed-dial lists, and services, that is assigned to their own desk phone. The phone user can make and receive calls on that phone using the same personal directory number as is on their own desk phone. More information on Extension Mobility feature is available at the following URL: http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/gui… A vulnerability in the login section of the Extension Mobility feature may allow an unauthenticated attacker to execute arbitrary code or cause a Denial of Service (DoS) condition. Such packets can only come from registered phone IP addresses in the form of HTTP requests. If the auto-registration feature is enabled, an attacker can register its IP address and subsequently send a crafted payload to exploit this vulnerability. The auto-registration feature is enabled by default. More information on auto-registration can be found at the following link: http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/command/reference/cme_a…. This vulnerability is addressed by the Cisco Bug ID CSCsq58779 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-2865. 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 CSCsq58779 - Vulnerability in Extension Mobility Feature CVSS Base Score - 7.6 Access Vector - Network Access Complexity - High Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 6.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of this vulnerability may result in the execution of arbitrary code or a Denial of Service (DoS) condition on an affected device. 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 Release | Availability of Repaired Releases | |----------------------+--------------------------------------------| | Affected 12.0-Based | First Fixed | Recommended Release | | Releases | Release | | |-------------------------------------------------------------------| | There are no affected 12.0 based releases. | |-------------------------------------------------------------------| | Affected 12.1-Based | First Fixed | Recommended Release | | Releases | Release | | |-------------------------------------------------------------------| | There are no affected 12.1 based releases. | |-------------------------------------------------------------------| | Affected 12.2-Based | First Fixed | Recommended Release | | Releases | Release | | |-------------------------------------------------------------------| | There are no affected 12.2 based releases. | |-------------------------------------------------------------------| | Affected 12.3-Based | First Fixed | Recommended Release | | Releases | Release | | |-------------------------------------------------------------------| | There are no affected 12.3 based releases. | |-------------------------------------------------------------------| | Affected 12.4-Based | First Fixed | Recommended Release | | Releases | Release | | |----------------------+---------------+----------------------------| | 12.4 | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4GC | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4JA | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4JDA | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4JDC | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4JDD | 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 | | |----------------------+---------------+----------------------------| | 12.4MDA | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4MR | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4SW | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4T | 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 | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4XR | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4XT | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4XV | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | | | 12.4(20)T4 | | | | | | 12.4XW | 12.4(11)XW8 | 12.4(22)T3 | | | | | | | | 12.4(24)T2; Available on | | | | 23-OCT-2009 | |----------------------+---------------+----------------------------| | | | 12.4(20)T4 | | | | | | 12.4XY | 12.4(15)XY4 | 12.4(22)T3 | | | | | | | | 12.4(24)T2; Available on | | | | 23-OCT-2009 | |----------------------+---------------+----------------------------| | | | 12.4(20)T4 | | | | | | 12.4XZ | 12.4(15)XZ1 | 12.4(22)T3 | | | | | | | | 12.4(24)T2; Available on | | | | 23-OCT-2009 | |----------------------+---------------+----------------------------| | | | 12.4(20)T4 | | | | | | 12.4YA | 12.4(20)YA1 | 12.4(22)T3 | | | | | | | | 12.4(24)T2; Available on | | | | 23-OCT-2009 | |----------------------+---------------+----------------------------| | 12.4YB | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4YD | Not | | | | Vulnerable | | |----------------------+---------------+----------------------------| | 12.4YE | Not | | | | Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== There are no workarounds to mitigate this vulnerability, other than disabling Extension Mobility. However, auto-registration can be disabled to make exploitation more difficult. Auto-registration can be disabled by the following command: telephony-service no auto-reg-ephone Before disabling auto-registration, all phone MAC addresses need to be explicitly defined on the Cisco Unified CME. Otherwise phones will not be able to register. More information on auto-registration can be found at the following link: http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/command/reference/cme_a… Additional mitigations that can be deployed on Cisco devices in the network are available in the Cisco Applied Mitigation Bulletin companion document for this advisory, which is available at the following link: http://www.cisco.com/warp/public/707/cisco-amb-20090923-cme.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 internally. 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-20090923-cme.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-September-23 | 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----- iD8DBQFKukGH86n/Gc8U/uARAgunAJ90YNHlxpf2v1OEz8qFEo7oqmNAqACfbq6X iHSiDV5CevynZQRrKe+sRiU= =Fp40 -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software H.323 Denial of Service Vulnerability
by Cisco Systems Product Security Incident Response Team 23 Sep '09

23 Sep '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software H.323 Denial of Service Vulnerability Advisory ID: cisco-sa-20090923-h323 Revision 1.0 For Public Release 2009 September 23 +--------------------------------------------------------------------- Summary ======= The H.323 implementation in Cisco IOS� Software contains a vulnerability that can be exploited remotely to cause a device that is running Cisco IOS Software to reload. Cisco has released free software updates that address this vulnerability. There are no workarounds to mitigate the vulnerability apart from disabling H.323 if the device that is running Cisco IOS Software does not need to run H.323 for VoIP services. This advisory is posted at: http://www.cisco.com/warp/public/707/cisco-sa-20090923-h323.shtml Note: The September 23, 2009, Cisco IOS Security Advisory bundled publication includes eleven Security Advisories. Ten of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published on September 23, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090923-bundle.shtml Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Advisory Bundled Publication" at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html Affected Products ================= Vulnerable Products +------------------ Cisco devices that are running affected Cisco IOS Software versions that are configured to process H.323 messages are affected by this vulnerability. H.323 is not enabled by default. To determine the Cisco IOS Software device is running H.323 services use the "show process cpu | include 323" command, as shown in the following example: Router#show process cpu | include 323 249 16000 3 5333 0.00% 0.00% 0.00% 0 CCH323_CT 250 0 1 0 0.00% 0.00% 0.00% 0 CCH323_DNS Router# Note: Only H.323 listening port TCP 1720 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 Products Confirmed Not Vulnerable +-------------------------------- Cisco IOS XE and Cisco IOS XR Software are not affected by this vulnerability. No other Cisco products are currently known to be affected by this vulnerability. Details ======= H.323 is the ITU standard for real-time multimedia communications and conferencing over packet-based (IP) networks. A subset of the H.323 standard is H.225.0, a standard used for call signalling protocols and media stream packetization over IP networks. The H.323 implementation in Cisco IOS Software contains a vulnerability. An attacker can exploit this vulnerability remotely by sending an H.323 crafted packet to the affected device that is running Cisco IOS Software. A TCP three-way handshake is needed to exploit this vulnerability. This vulnerability is documented in Cisco bug ID CSCsz38104 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-2866. 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 CSCsz38104 - Crafted H323 packets may cause device to reload 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 cause the affected device to reload. The issue could be exploited repeatedly 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 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 | | |------------+---------------------------------------+--------------| | | Vulnerable; first fixed in 12.4 | 12.4(25b) | | 12.2B | | | | | Releases up to and including 12.2(4) | 12.4(23b) | | | B8 are not vulnerable. | | |------------+---------------------------------------+--------------| | 12.2BC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2BW | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; first fixed in 12.4 | 12.4(25b) | | 12.2BX | | | | | Releases up to and including 12.2(15) | 12.4(23b) | | | BX are not vulnerable. | | |------------+---------------------------------------+--------------| | 12.2BY | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2BZ | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2CX | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2CY | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2CZ | Vulnerable; migrate to 12.2SB | 12.2(33)SB7 | |------------+---------------------------------------+--------------| | 12.2DA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2DD | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2DX | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2EW | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2EWA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2EX | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2EY | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2EZ | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2FX | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2FY | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2FZ | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2IRA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2IRB | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2IRC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 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 | | |------------+---------------------------------------+--------------| | 12.2IXH | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2JA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2JK | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2MB | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Releases up to and including 12.2(15) | | | | MC1 are not vulnerable. | 12.4(25b) | | 12.2MC | | | | | Releases 12.2(15)MC2b and later are | 12.4(23b) | | | not vulnerable; first fixed in 12.4 | | |------------+---------------------------------------+--------------| | 12.2S | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SB | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SBC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SCA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SCB | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SE | Not Vulnerable | | |------------+---------------------------------------+--------------| | 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 | | |------------+---------------------------------------+--------------| | 12.2SG | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SGA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SL | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SM | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SO | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SQ | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SRA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SRB | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SRC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SRD | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2STE | Not Vulnerable | | |------------+---------------------------------------+--------------| | 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 | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SY | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2SZ | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; first fixed in 12.4 | 12.4(25b) | | 12.2T | | | | | Releases up to and including 12.2(8) | 12.4(23b) | | | T10 are 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 | | |------------+---------------------------------------+--------------| | 12.2XNA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2XNB | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2XNC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2XND | 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 | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2YH | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2YJ | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | 12.2YK | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2YL | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.2YM | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2YN | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | 12.2YO | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2YP | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2YQ | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2YR | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.2YS | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2YT | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2YU | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | Releases prior to 12.2(11)YV1 are | | | 12.2YV | vulnerable, release 12.2(11)YV1 and | | | | later are 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 | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2ZC | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2ZD | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.2ZE | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.2ZF | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | 12.2ZG | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.2ZH | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2ZJ | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2ZL | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.2ZP | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | 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 | | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3 | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3B | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | 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 | | |------------+---------------------------------------+--------------| | | Releases up to and including 12.3(2) | | | | JK3 are not vulnerable. | 12.4(25b) | | 12.3JK | | | | | Releases 12.3(8)JK1 and later are not | 12.4(23b) | | | vulnerable; first fixed in 12.4 | | |------------+---------------------------------------+--------------| | 12.3JL | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.3JX | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3T | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | 12.3TPC | Releases up to and including 12.3(4) | | | | TPC11a are not vulnerable. | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.3VA | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | Releases prior to 12.3(2)XA7 are | 12.4(25b) | | 12.3XA | vulnerable, release 12.3(2)XA7 and | | | | later are not vulnerable; first fixed | 12.4(23b) | | | in 12.4 | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.3XB | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XC | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XD | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XE | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.3XF | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XG | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | Note: Releases prior to 12.3(7)XI11 | 12.2(33)SB7 | | 12.3XI | are vulnerable, release 12.3(7)XI11 | | | | and later are not vulnerable; | 12.2(31)SB16 | |------------+---------------------------------------+--------------| | 12.3XJ | Vulnerable; migrate to any release in | 12.4(15)T10 | | | 12.4XN | | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XK | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XL | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XQ | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XR | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | 12.3XS | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | Vulnerable; first fixed in 12.4T | 12.4(20)T4 | | | | | | 12.3XU | Releases up to and including 12.3(8) | 12.4(22)T3 | | | XU1 are not vulnerable. | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | Vulnerable; migrate to any release in | 12.4(15)XR7 | | 12.3XW | 12.4XR | | | | | 12.4(22)XR | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XX | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XY | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | | | 12.4(25b) | | 12.3XZ | Vulnerable; first fixed in 12.4 | | | | | 12.4(23b) | |------------+---------------------------------------+--------------| | 12.3YA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.3YD | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; migrate to any release in | 12.4(15)XR7 | | 12.3YF | 12.4XR | | | | | 12.4(22)XR | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.3YG | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | 12.3YH | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.3YI | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.3YJ | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | Releases prior to 12.3(11)YK3 are | 12.4(20)T4 | | | vulnerable, release 12.3(11)YK3 and | | | 12.3YK | later are not vulnerable; first fixed | 12.4(22)T3 | | | in 12.4T | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.3YM | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.3YQ | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | Vulnerable; first fixed in 12.4T | 12.4(20)T4 | | | | | | 12.3YS | Releases up to and including 12.3(11) | 12.4(22)T3 | | | YS1 are not vulnerable. | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.3YT | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.3YU | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)XR7 | | 12.3YX | Vulnerable; migrate to 12.4XR | | | | | 12.4(22)XR | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.3YZ | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.3ZA | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | Affected | | Recommended | | 12.4-Based | First Fixed Release | Release | | Releases | | | |------------+---------------------------------------+--------------| | | 12.4(25b) | 12.4(25b) | | 12.4 | | | | | 12.4(23b) | 12.4(23b) | |------------+---------------------------------------+--------------| | 12.4GC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JDA | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JDC | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4JDD | 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 | | |------------+---------------------------------------+--------------| | 12.4MDA | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Releases prior to 12.4(19)MR3 are | | | 12.4MR | vulnerable, release 12.4(19)MR3 and | | | | later are not vulnerable | | |------------+---------------------------------------+--------------| | 12.4SW | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | 12.4(15)T10 | | | | | 12.4(20)T4 | | | 12.4(20)T4 | | | 12.4T | | 12.4(22)T3 | | | 12.4(22)T2 | | | | | 12.4(24)T2; | | | 12.4(24)T1 | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XA | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XB | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XC | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XD | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XE | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | 12.4XF | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4XG | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XJ | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | 12.4XK | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.4XL | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | Vulnerable; first fixed in 12.4T | 12.4(20)T4 | | | | | | 12.4XM | Releases up to and including 12.4(15) | 12.4(22)T3 | | | XM are not vulnerable. | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | 12.4XN | Not Vulnerable | | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.4XP | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | 12.4XQ | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4XR | Not Vulnerable | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XT | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | Vulnerable; Contact your support | | | 12.4XV | organization per the instructions in | | | | Obtaining Fixed Software section of | | | | this advisory | | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XW | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XY | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4XZ | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | | | 12.4(15)T10 | | | | | | | | 12.4(20)T4 | | | | | | 12.4YA | Vulnerable; first fixed in 12.4T | 12.4(22)T3 | | | | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |------------+---------------------------------------+--------------| | 12.4YB | 12.4(22)YB4 | 12.4(22)YB4 | |------------+---------------------------------------+--------------| | 12.4YD | Not Vulnerable | | |------------+---------------------------------------+--------------| | 12.4YE | Not Vulnerable | | +-------------------------------------------------------------------+ Note: No Cisco IOS-XE Software or Cisco IOS Software Modularity releases are affected by this vulnerability. Workarounds =========== There are no workarounds to mitigate the vulnerability apart from disabling H.323 if the Cisco IOS device does not need to run H.323 for VoIP services. Affected devices that must run H.323 are vulnerable, and there are not any specific configurations that can be used to protect them. Applying access lists on interfaces that should not accept H.323 traffic and putting firewalls in strategic locations may greatly reduce exposure until an upgrade can be performed. Cisco provides Solution Reference Network Design (SRND) guides to help design and deploy networking solutions, which can be found at http://www.cisco.com/go/srnd Voice Security best practices are covered in the Cisco Unified Communications SRND Based on Cisco Unified Communications Manager 6.x at: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/6x/security.html Below is an example of an access list to block H.323 management traffic from anywhere but a permitted network. In this example, the permitted network is 172.16.0.0/16. !--- Permit access from any IP address in the 172.16.0.0/16 !--- network to anywhere on port 1720. access-list 101 permit tcp 172.16.0.0 0.0.255.255 any eq 1720 !--- Permit access from anywhere to a host in the !--- 172.16.0.0/26 network on port 1720. access-list 101 permit tcp any 172.16.0.0 0.0.255.255 eq 1720 !--- Deny all traffic from port 1720. access-list 101 deny tcp any eq 1720 any !--- Deny all traffic to port 1720. access-list 101 deny tcp any any eq 1720 !--- Permit all other traffic. access-list 101 permit ip any any Alternatively, you can use the "call service stop forced" command under the "voice service voip" mode, as shown in the following example: voice service voip h323 call service stop forced 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 Denial of Service Vulnerabilities in Cisco Unified Communications Manager and Cisco IOS Software", which is available at the following location: http://www.cisco.com/warp/public/707/cisco-amb-20090923-voice.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 during 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-20090923-h323.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-September-23 | 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----- iD8DBQFKukGL86n/Gc8U/uARAg57AJ9RtkzXFDXBhVYa/uszbYnplu2nhgCeJmtM vims3xWW7vcpqLkfphuJWzs= =eh5W -----END PGP SIGNATURE-----

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Cisco Security Advisory: Cisco IOS Software Zone-Based Policy Firewall Vulnerability
by Cisco Systems Product Security Incident Response Team 23 Sep '09

23 Sep '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IOS Software Zone-Based Policy Firewall Vulnerability Advisory ID: cisco-sa-20090923-ios-fw Revision 1.0 For Public Release 2009 September 23 +--------------------------------------------------------------------- Summary ======= Cisco IOS� devices that are configured with Cisco IOS Zone-Based Policy Firewall Session Initiation Protocol (SIP) inspection are vulnerable to denial of service (DoS) attacks when processing a specific SIP transit packet. Exploitation of the vulnerability could result in a reload of the affected device. Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. This advisory is posted at: http://www.cisco.com/warp/public/707/cisco-sa-20090923-ios-fw.shtml Note: The September 23, 2009, Cisco IOS Security Advisory bundled publication includes eleven Security Advisories. Ten of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The following table lists releases that correct all Cisco IOS Software vulnerabilities that have been published on September 23, 2009, or earlier. http://www.cisco.com/warp/public/707/cisco-sa-20090923-bundle.shtml Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Advisory Bundled Publication" at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html Affected Products ================= This vulnerability affects a limited number of Cisco IOS Software releases. Consult the "Software Versions and Fixes" section of this advisory for the details of affected releases. Only devices that are configured with Cisco IOS Zone-Based Policy Firewall SIP inspection (UDP port 5060, TCP ports 5060, and 5061) are vulnerable. Cisco IOS devices that are configured with legacy Cisco IOS Firewall Support for SIP (context-based access control (CBAC)) are not vulnerable. Vulnerable Products +------------------ 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 �) 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 �) 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 The device is vulnerable if the configuration has either a layer 3 or layer 7 SIP application-specific policy configured, and these policies are applied to any firewall zone. To determine whether the device is running a vulnerable configuration, log in to the device and issue the command line interface (CLI) command "show policy-map type inspect zone-pair | include atch: access|protocol sip". If the output contains "Match: protocol sip", the device is vulnerable. If the output contains "Match: access-group number", then the device is only vulnerable "if", the referenced access list permits the SIP protocol (UDP port 5060, or TCP ports 5060 and 5061). The following example shows a vulnerable device configured with Cisco IOS Zone-Based Policy Firewall SIP inspection: Router#show policy-map type inspect zone-pair | include atch: access|protocol sip Match: protocol sip Router# The following example shows a vulnerable device configured with SIP inspection by way of an applied access list: Router#show policy-map type inspect zone-pair | include atch: access|protocol sip Match: access-group 102 Router# Router#show access-list 102 Extended IP access list 102 10 permit udp any any eq 5060 20 permit tcp any any eq 5060 30 permit tcp any any eq 5061 Router# A device that is not configured for SIP inspection or does not support this configuration will return either a blank line or an error message. The following is an example of a device that supports Cisco IOS Firewall but does not have SIP inspection enabled: Router#show policy-map type inspect zone-pair | include atch: access|protocol sip Router# Products Confirmed Not Vulnerable +-------------------------------- No other Cisco products are currently known to be affected by this vulnerability. Products confirmed not vulnerable include: * Cisco PIX 500 Series Firewall * Cisco ASA 5500 Series Adaptive Security Appliance * Firewall Services Module (FWSM) for Catalyst 6500 Series Switches and 7600 Series Routers * Virtual Firewall (VFW) application on the multiservice blade (MSB) on the Cisco XR 12000 Series Router * Cisco ACE Application Control Engine Module * Cisco IOS devices NOT configured with Cisco IOS Zone-Based Policy Firewall SIP inspection. * Cisco IOS devices configured with legacy Cisco IOS Firewall Support for SIP (CBAC) * Cisco IOS XE Software * Cisco IOS XR Software Details ======= Firewalls are networking devices that control access to the network assets of an organization. Firewalls are often positioned at the entrance points into networks. Cisco IOS software provides a set of security features that enable you to configure a simple or elaborate firewall policy, according to your particular requirements. SIP inspection in the Cisco IOS Firewall provides basic SIP inspect functionality (SIP packet inspection and pinhole opening) as well as protocol conformance and application security. Cisco IOS Software that is configured with Cisco IOS Zone-Based Policy Firewall SIP inspection are vulnerable to a DoS attack when processing a specific SIP transit packet. Exploitation of this vulnerability will result in a reload of the affected device. Cisco IOS Zone-Based Policy Firewall SIP inspection was first introduced in Cisco IOS Software versions 12.4(15)XZ and 12.4(20)T. Cisco IOS Firewall CBAC support for SIP inspection by way of the "ip inspect name [inspection_name] sip" is not vulnerable. Additional information regarding Cisco IOS Firewall CBAC support for SIP inspection is available in the document "Firewall Support for SIP" at the following link: http://www.cisco.com/en/US/docs/ios/sec_data_plane/configuration/guide/sec_… Additional information regarding Cisco IOS Zone-Based Policy Firewall SIP inspection is available in the document "Cisco IOS Firewall: SIP Enhancements: ALG and AIC" at the following link: http://www.cisco.com/en/US/docs/ios/security/configuration/guide/sec_sip_al… This vulnerability is documented in the following Cisco Bug ID: CSCsr18691 and has been assigned the Common Vulnerabilities and Exposures (CVE) identifier CVE-2009-2867. 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 CSCsr18691 - Cisco IOS Software Zone-Based Policy Firewall 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 a reload of the affected device. Repeated exploit attempts may result in a sustained DoS attack. 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 Release | Availability of Repaired Releases | |-----------------+-------------------------------------------------| | 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 | | | |-------------------------------------------------------------------| | There are no affected 12.2 based releases | |-------------------------------------------------------------------| | 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 | | |-----------------+---------------------------+---------------------| | 12.4GC | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4JA | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4JDA | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4JDC | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4JDD | 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 | | |-----------------+---------------------------+---------------------| | 12.4MDA | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4MR | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4SW | Not Vulnerable | | |-----------------+---------------------------+---------------------| | | Releases prior to 12.4 | 12.4(20)T4 | | | (20)T are not vulnerable; | | | | | 12.4(22)T3 | | 12.4T | 12.4(20)T2 | | | | | 12.4(24)T2; | | | 12.4(22)T1 | Available on | | | | 23-OCT-2009 | | | 12.4(24)T | | |-----------------+---------------------------+---------------------| | 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 | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4XR | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4XT | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4XV | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4XW | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4XY | Not Vulnerable | | |-----------------+---------------------------+---------------------| | | | 12.4(20)T4 | | | | | | | Vulnerable; first fixed | 12.4(22)T3 | | 12.4XZ | in 12.4T | | | | | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |-----------------+---------------------------+---------------------| | | | 12.4(22)T3 | | | Vulnerable; first fixed | | | 12.4YA | in 12.4T | 12.4(24)T2; | | | | Available on | | | | 23-OCT-2009 | |-----------------+---------------------------+---------------------| | | | 12.4(22)YB4 | | | | | | 12.4YB | 12.4(22)YB4 | 12.4(22)YB5; | | | | Available on | | | | 19-OCT-2009 | |-----------------+---------------------------+---------------------| | 12.4YD | Not Vulnerable | | |-----------------+---------------------------+---------------------| | 12.4YE | Not Vulnerable | | +-------------------------------------------------------------------+ Workarounds =========== The only workaround for this vulnerability is to disable Cisco IOS zone-based policy firewall SIP inspection in the affected device's configuration. Disabling SIP inspection will allow the rest of the firewall features to continue to function until a software upgrade can be implemented. All other firewall features will continue to perform normally. Disabling SIP Inspection will vary depending on the implementation of the SIP inspection firewall. 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 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-20090923-ios-fw.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-September-23 | 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----- iD8DBQFKukGO86n/Gc8U/uARAiwEAKCXGG7xSxS+kMllVPDdOacuAZV9vACfcVVG 3Lm0u0kNPpfW4oxa9PNOUA8= =f0Hj -----END PGP SIGNATURE-----

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