From agent99@sgi.com Mon Aug 25 15:02:21 2003 From: SGI Security Coordinator To: agent99@sgi.com Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, vulnwatch@vulnwatch.org Date: Mon, 25 Aug 2003 10:10:30 -0700 Subject: [Full-Disclosure] Sendmail DNS Map Vulnerability on IRIX -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SGI Security Advisory Title : Sendmail DNS Map Vulnerability Number : 20030803-01-P Date : August 25, 2003 Reference: CVE CAN-2003-0688 Reference: SGI BUG 898396 Fixed in : IRIX 6.5.22 or patch 5287 ______________________________________________________________________________ SGI provides this information freely to the SGI user community for its consideration, interpretation, implementation and use. SGI recommends that this information be acted upon as soon as possible. SGI provides the information in this Security Advisory on an "AS-IS" basis only, and disclaims all warranties with respect thereto, express, implied or otherwise, including, without limitation, any warranty of merchantability or fitness for a particular purpose. In no event shall SGI be liable for any loss of profits, loss of business, loss of data or for any indirect, special, exemplary, incidental or consequential damages of any kind arising from your use of, failure to use or improper use of any of the instructions or information in this Security Advisory. ______________________________________________________________________________ - ----------------------- - --- Issue Specifics --- - ----------------------- It's been reported by sendmail.org that there is a potential problem in the sendmail 8.12 series with respect to DNS maps in sendmail 8.12.8 and earlier sendmail 8.12.x versions: http://www.sendmail.org/dnsmap1.html SGI ships sendmail 8.12.5 with IRIX 6.5.19 and later. The bug did not exist in versions before 8.12 as the DNS map type is new to 8.12.x versions. This bug could potentially be exploited to cause a Denial of Service. There may be a possibility of using it to gain remote root access. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0688 to this issue: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0688 SGI has investigated the issue and recommends the following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures be implemented on ALL vulnerable SGI systems. These issues have been corrected in patches and in future releases of IRIX. - -------------- - --- Impact --- - -------------- The sendmail binary is installed by default on IRIX 6.5 systems as part of eoe.sw.base. To determine the version of IRIX you are running, execute the following command: # /bin/uname -R That will return a result similar to the following: # 6.5 6.5.19f The first number ("6.5") is the release name, the second ("6.5.16f" in this case) is the extended release name. The extended release name is the "version" we refer to throughout this document. - ---------------------------- - --- Temporary Workaround --- - ---------------------------- There is no effective workaround available for these problems if you use dns maps with sendmail. SGI recommends either upgrading to IRIX 6.5.22 (when available), or installing the appropriate patch from the listing below. - ---------------- - --- Solution --- - ---------------- SGI has provided a series of patches for these vulnerabilities. Our recommendation is to upgrade to IRIX 6.5.22 (when available), or install the appropriate patch. OS Version Vulnerable? Patch # Other Actions ---------- ----------- ------- ------------- IRIX 3.x unknown Note 1 IRIX 4.x unknown Note 1 IRIX 5.x unknown Note 1 IRIX 6.0.x unknown Note 1 IRIX 6.1 unknown Note 1 IRIX 6.2 unknown Note 1 IRIX 6.3 unknown Note 1 IRIX 6.4 unknown Note 1 IRIX 6.5 no IRIX 6.5.1 no IRIX 6.5.2 no IRIX 6.5.3 no IRIX 6.5.4 no IRIX 6.5.5 no IRIX 6.5.6 no IRIX 6.5.7 no IRIX 6.5.8 no IRIX 6.5.9 no IRIX 6.5.10 no IRIX 6.5.11 no IRIX 6.5.12 no IRIX 6.5.13 no IRIX 6.5.14 no IRIX 6.5.15 no IRIX 6.5.16 no IRIX 6.5.17 no IRIX 6.5.18 no IRIX 6.5.19 yes 5287 Notes 2 & 3 IRIX 6.5.20 yes 5287 Notes 2 & 3 IRIX 6.5.21 yes 5287 Notes 2 & 3 IRIX 6.5.22 no NOTES 1) This version of the IRIX operating has been retired. Upgrade to an actively supported IRIX operating system. See http://support.sgi.com for more information. 2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your SGI Support Provider or URL: http://support.sgi.com 3) Upgrade to IRIX 6.5.22 (when available) or install the patch. ##### Patch File Checksums #### Filename: README.patch.5287 Algorithm #1 (sum -r): 03461 10 README.patch.5287 Algorithm #2 (sum): 38994 10 README.patch.5287 MD5 checksum: 727E74B176D101AA4DE1E5F816E86AF2 Filename: patchSG0005287 Algorithm #1 (sum -r): 39412 4 patchSG0005287 Algorithm #2 (sum): 5197 4 patchSG0005287 MD5 checksum: 6A69EEF8FC02D549D110A64F8DEDA98C Filename: patchSG0005287.eoe_src Algorithm #1 (sum -r): 18481 378 patchSG0005287.eoe_src Algorithm #2 (sum): 2432 378 patchSG0005287.eoe_src MD5 checksum: EBDE27E3AF773E0EA6D2884A88501B71 Filename: patchSG0005287.eoe_sw Algorithm #1 (sum -r): 34932 1104 patchSG0005287.eoe_sw Algorithm #2 (sum): 48296 1104 patchSG0005287.eoe_sw MD5 checksum: 0DE3B5C3BE9FE1DE0E0F022BB2FCDF14 Filename: patchSG0005287.idb Algorithm #1 (sum -r): 56703 4 patchSG0005287.idb Algorithm #2 (sum): 23907 4 patchSG0005287.idb MD5 checksum: 6A25934457046F7EDFD84A9CE39C9623 - ------------------------ - --- Acknowledgments ---- - ------------------------ SGI wishes to thank sendmail.org and the users of the Internet Community at large for their assistance in this matter. - ------------- - --- Links --- - ------------- SGI Security Advisories can be found at: http://www.sgi.com/support/security/ and ftp://patches.sgi.com/support/free/security/advisories/ SGI Security Patches can be found at: http://www.sgi.com/support/security/ and ftp://patches.sgi.com/support/free/security/patches/ SGI patches for IRIX can be found at the following patch servers: http://support.sgi.com/ and ftp://patches.sgi.com/ SGI freeware updates for IRIX can be found at: http://freeware.sgi.com/ SGI patches and RPMs for Linux can be found at: http://support.sgi.com SGI patches for Windows NT or 2000 can be found at: http://support.sgi.com/ IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at: http://support.sgi.com/ and ftp://patches.sgi.com/support/patchset/ IRIX 6.5 Maintenance Release Streams can be found at: http://support.sgi.com/ IRIX 6.5 Software Update CDs can be obtained from: http://support.sgi.com/ The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com. 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