============================================================================= CA-93:16a CERT Advisory January 7, 1994 Sendmail Vulnerability **Supplementary advisory containing vendor patch information** ----------------------------------------------------------------------------- The CERT Coordination Center is continuing to work with vendors on eliminating a group of vulnerabilities in sendmail(8). These vulnerabilities include those related to mailing to a program, mailing to a file, and a few others. This advisory provides information about new patches available from some vendors. At the time that CA-93:16.sendmail.vulnerability was published a set of workarounds were provided. These workarounds should still be used until vendor patches are available. Once the vendor patches have been installed, sites can either choose to continue to use smrsh or uninstall it. CERT will maintain an accompanying file, CA-93:16a.README. This file will contain information about sendmail patches and will be updated whenever new patches or information becomes available. CERT has provided detailed information about all known vulnerabilities in sendmail to all of our vendor contacts. If your vendor is unaware of the problems, or if they have any questions, please have them contact us. A brief listing of currently available patches as well as information on upcoming patches is provided below. Vendor-supplied information concerning these patches is included in the CA-93:16a.README file. For some vendors, the CA-93:16a.README file includes a pointer to the full text of the vendor's own advisory concerning sendmail. The current version of CA-93:16a.README is included in appendix A for your convenience. Vendor Patch Status ------ ------------ sendmail 8.6.4 available IDA sendmail available BSDI available Data General Corporation available Digital Equipment Corporation available Hewlett-Packard Company available IBM available NeXT, Inc. available soon The Santa Cruz Operation available soon Sequent Computer Systems available Solbourne available Sony Corporation available Sun Microsystems, Inc. available ----------------------------------------------------------------------------- The CERT Coordination Center wishes to thank all the vendors for recognizing the importance of these vulnerabilities and responding to them. --------------------------------------------------------------------------- If you believe that your system has been compromised, contact the CERT Coordination Center or your representative in Forum of Incident Response and Security Teams (FIRST). Internet E-mail: cert@cert.org Telephone: 412-268-7090 (24-hour hotline) CERT personnel answer 8:30 a.m.-5:00 p.m. EST(GMT-5)/EDT(GMT-4), and are on call for emergencies during other hours. CERT Coordination Center Software Engineering Institute Carnegie Mellon University Pittsburgh, PA 15213-3890 Past advisories, information about FIRST representatives, and other information related to computer security are available for anonymous FTP from info.cert.org. **Notice** The following Appendix contains the version of the CA-93:16a.README file that was current at the time of the release of this advisory. If you are retrieving this advisory after January 7, 1994, please ensure that you also retrieve the most recent version of the CA-93:16a.README file (found in the same directory on info.cert.org). Appendix A: CA-93:16a.README CA-93:16a.README Rev. January 7, 1994 This file is a supplement to the CERT Advisory CA-93:16a of January 7, 1994, and will be updated as additional information becomes available. The following is vendor-supplied information. Please notice that some entries provide pointers to vendor advisories. For more up-to-date information, contact your vendor. ------------- Eric Allman, 8.6.4 Version 8.6.4 is available for anonymous FTP from ftp.cs.berkeley.edu in the "ucb/sendmail" directory. Standard Unix Sum sendmail.8.6.4.base.tar.Z: 07718 428 System V Sum 64609 856 sendmail.8.6.4.base.tar.Z MD5 Checksum MD5 (sendmail.8.6.4.base.tar.Z) = 59727f2f99b0e47a74d804f7ff654621 ------------- Paul Pomes, IDA: A new release is available for anonymous FTP from vixen.cso.uiuc.edu as "pub/sendmail-5.67b+IDA-1.5.tar.gz". Standard Unix Sum sendmail-5.67b+IDA-1.5.tar.gz: 17272 1341 System V Sum 30425 2682 sendmail-5.67b+IDA-1.5.tar.gz MD5 Checksum MD5 (sendmail-5.67b+IDA-1.5.tar.gz) = a9b8e17fd6d3e52739d2195cead94300 ------------- BSDI BSDI can supply either an easy-to-install port of the smrsh patch from CERT or a port of sendmail-8.6.4 (contact BSDI Customer Support for information in obtaining either of these solutions). In future releases, BSDI will ship the newer sendmail that is not affected by these problems. Releases affected by this advisory: BSD/386 V1.0. BSDI Contact Information: BSDI Customer Support Berkeley Software Design, Inc. 7759 Delmonico Drive Colorado Springs, CO 80919 Toll Free: +1 800 ITS BSD8 (+1 800 486 2738) Phone: +1 719 260 8114 Fax: +1 719 598 4238 Email: support@bsdi.com ------------- Data General Corporation Patches are available from dg-rtp.rtp.dg.com (128.222.1.2) in the directory "deliver/sendmail": Rev Patch Number Sys V Checksum ------------ ------------------ -------- 5.4.2 tcpip_5.4.2.p14 39298 512 MD5 (tcpip_5.4.2.p14) = c80428e3b791d4e40ebe703ba5bd249c 5.4R2.01 tcpip_5.4R2.01.p12 65430 512 MD5 (tcpip_5.4R2.01.p12) = 9c84cfdb4d79ee22224eeb713a414996 5.4R2.10 tcpip_5.4R2.10.p05 42625 512 MD5 (tcpip_5.4R2.10.p05) = 2d74586ff22e649354cc6a02f390a4be These patches are loadable via the "syadm" utility and installation instructions are included in the patch notes. Trusted versions of DG/UX will use the same patches as their base version of DG/UX. Customers with any questions about these patches should contact their local SEs or Sales Representatives. ------------- Digital Equipment Corporation Systems affected: ULTRIX Versions 4.3 (VAX), ULTRIX V4.3 & V4.3A (RISC), DEC OSF/1 V1.2 & V1.3, using sendmail. The following patches are available from your normal Digital support channel: ULTRIX V4.3 (VAX), V4.3 (RISC) or V4.3a (RISC): CSCPAT #: CSCPAT_4044 OSF/1 V1.2 and V1.3: CSCPAT #: CSCPAT_4045 *These fixes will be included in future releases of ULTRIX and DEC OSF/1 Digital Equipment Corporation strongly urges Customers to upgrade to a minimum of ULTRIX V4.3 or DEC OSF/1 V1.2, then apply the Security kit to prevent this potential vulnerability. The full text of Digital's advisory can be found in /pub/vendors/dec/advisories/sendmail on info.cert.org. ------------- Hewlett-Packard Company For HP/UX, the following patches are available: PHNE_3369 (series 300/400, HP-UX 8.x), or PHNE_3370 (series 300/400, HP-UX 9.x), or PHNE_3371 (series 700/800, HP-UX 8.x), or PHNE_3372 (series 700/800, HP-UX 9.x), or modify the sendmail configuration file (releases of HP-UX prior to 8.0) These patches may be obtained from HP via FTP (this is NOT anonymous FTP) or the HP SupportLine. To obtain HP security patches, you must first register with the HP SupportLine. The registration instructions are available via anonymous FTP at info.cert.org in the file "pub/vendors/hp/supportline_and_patch_retrieval". The full text of Hewlett-Packard's advisory can be found in /pub/vendors/hp/advisories/sendmail on info.cert.org. ------------- IBM Patches for these problems can be ordered as APAR# ix40304 and APAR# ix41354. Ix40304 is available now and ix41354 will be sent as soon as it is available. ------------- NeXT, Inc. NeXT expects to have patches available soon. ------------- The Santa Cruz Operation Support level Supplement (SLS) net379A, will soon be available for the following platforms: SCO TCP/IP Release 1.2.0 for SCO UNIX or SCO XENIX SCO TCP/IP Release 1.2.1 for SCO UNIX SCO Open Desktop Release 2.0, 3.0 SCO Open Desktop Lite Release 3.0 SCO Open Server Network System, Release 3.0 SCO Open Server Enterprise System, Release 3.0 This SLS is currently orderable from SCO Support for all customers who have one of the above products registered. It will be available in the near future. Systems using MMDF as their mail system do not need this SLS. ------------- Sequent Computer Systems Versions 3.0.17 and greater of Dynix are vulnerable as are versions 2.2 and 2.3 of the TCP package for PTX. Sequent customers should call the Sequent Hotline at (800) 854-9969 and ask for the Sendmail Maintenance Release Tape. Alternatively, ptx customers can upgrade to PTX/TCP/IP version 2.2.3 or 2.3.1 as appropriate. ------------- Solbourne Patch p93122301 is available from Solboune to fix the sendmail problems. This patch is equivalent to Sun patch 100377-08. Customers may retrieve it via anonymous FTP from solbourne.solbourne.com in the pub/support/OS4.1B directory: Filename BSD SVR4 Checksum Checksum --------------- --------- --------- p93122301.tar.Z 63749 211 53951 421 MD5 (p93122301.tar.Z) = f7300f3ecfbbbfaa11a6695f42f14615 It is also available by sending email to solis@solbourne.com and specifying "get patches/4.1b p93122301" in the body of the mail message. Earlier versions (4.1A.*) are no longer supported. The 4.1B patch may well work on 4.1A.* systems but this has not been tested. If you have any questions please call the SOURCE at 1-800-447-2861 or send email to support@solbourne.com. The full text of Solbourne's advisory can be found in /pub/vendors/solbourne/advisories/sendmail on info.cert.org. --------------- Sony Corporation These vulnerabilities have been fixed in NEWS-OS 6.0.1. A patch is available for NEWS-OS 4.x. Customers should contact their dealers for any additional information. --------------- Sun Microsystems, Inc. Sun has made patches for sendmail available as described in their SUN MICROSYSTEMS SECURITY BULLETIN: #00125, 12/23/93. These patches can be found in the /systems/sun/sun-dist directory on ftp.uu.net: System Patch ID Filename BSD SVR4 Checksum Checksum ------ -------- --------------- --------- --------- SunOS 4.1.x 100377-08 100377-08.tar.Z 05320 755 58761 1510 Solaris 2.1 100840-06 100840-06.tar.Z 59489 195 61100 390 Solaris 2.2 101077-06 101077-06.tar.Z 63001 179 28185 358 Solaris 2.3 101371-03 101371-03.tar.Z 27539 189 51272 377 MD5 checksums are: MD5 (100377-08.tar.Z) = 8e8a14c0a46b6c707d283cacd85da4f1 MD5 (100840-06.tar.Z) = 7d8d2c7ec983a58b4c6a608bf1ff53ec MD5 (101077-06.tar.Z) = 78e165dec0b8260ca6a5d5d9bdc366b8 MD5 (101371-03.tar.Z) = 687d0f3287197dee35941b9163812b56 A patch for x86 based systems will be forthcoming as patch 101352-02. 4.1 sites installing these patches may require sites to modify their configuration files slightly. Full details are given in the Sun advisory. The full text of Sun Microsystems's advisory can be found in /pub/vendors/sun/advisories/sendmail on info.cert.org.