From agent99@sgi.com Thu Apr 10 01:45:47 2003 From: SGI Security Coordinator To: agent99@sgi.com Newsgroups: comp.sys.sgi.announce, comp.security.unix, comp.sys.sgi.admin, comp.security.announce Date: Wed, 9 Apr 2003 11:02:42 -0700 Subject: Samba Security Vulnerability on IRIX -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SGI Security Advisory Title : Samba Security Vulnerability Number : 20030403-01-P Date : April 9, 2003 Reference: CVE CAN-2003-0201 Reference: SGI BUG 886996 Fixed in : Samba 2.2.8a or patch 5065 ______________________________________________________________________________ - ----------------------- - --- Issue Specifics --- - ----------------------- It's been reported that there is a vulnerability in Samba versions up to and including Samba 2.2.8. This vulnerability, if exploited correctly, leads to an anonymous user gaining root access on a Samba serving system. See: http://master.samba.org/samba/samba.html (Samba News 7 Apr, 2003) http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0201 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 future releases of Samba and with a patch for SGI's Samba 2.2.8. - -------------- - --- Impact --- - -------------- Samba for Irix is not installed by default on IRIX 6.5 systems. It is an optional product that can be purchased and installed as "samba_irix". 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. To see if Samba is installed, execute the following command: % versions samba_irix I = Installed, R = Removed Name Date Description I samba_irix 07/02/2002 Samba 2.2.4 for IRIX I samba_irix.man 07/02/2002 Samba Online Documentation I samba_irix.man.doc 07/02/2002 Samba 2.2.4 Documentation I samba_irix.man.manpages 07/02/2002 Samba 2.2.4 Man Page I samba_irix.man.relnotes 07/02/2002 Samba 2.2.4 Release Notes I samba_irix.src 07/02/2002 Samba Source Code I samba_irix.src.samba 07/02/2002 Samba 2.2.4 Source Code I samba_irix.sw 07/02/2002 Samba Execution Environment I samba_irix.sw.base 07/02/2002 Samba 2.2.4 Execution Environment If the result is similar to the above and the version shown is less than 2.2.8a, then the system is vulnerable. - ---------------------------- - --- Temporary Workaround --- - ---------------------------- Though it is possible to limit exposure by filtering what IPs can talk to your Samba server, there is no effective workaround to fully address these problems. SGI recommends upgrading to Samba 2.2.8 and installing patch 5065. - ---------------- - --- Solution --- - ---------------- SGI has provided a patch for Samba 2.2.8 for this vulnerability. Our recommendation is to upgrade to Samba 2.2.8 and install the patch. Patch 5065 only applies to the samba_irix 2.2.8 package. This patch will not apply to the freeware versions of samba available from: http://freeware.sgi.com/ , http://www.samba.org/ and http://master.samba.org/samba/ftp/Binary_Packages/IRIX/ 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 yes 5065 Notes 2 & 3 IRIX 6.5.1 yes 5065 Notes 2 & 3 IRIX 6.5.2 yes 5065 Notes 2 & 3 IRIX 6.5.3 yes 5065 Notes 2 & 3 IRIX 6.5.4 yes 5065 Notes 2 & 3 IRIX 6.5.5 yes 5065 Notes 2 & 3 IRIX 6.5.6 yes 5065 Notes 2 & 3 IRIX 6.5.7 yes 5065 Notes 2 & 3 IRIX 6.5.8 yes 5065 Notes 2 & 3 IRIX 6.5.9 yes 5065 Notes 2 & 3 IRIX 6.5.10 yes 5065 Notes 2 & 3 IRIX 6.5.11 yes 5065 Notes 2 & 3 IRIX 6.5.12 yes 5065 Notes 2 & 3 IRIX 6.5.13 yes 5065 Notes 2 & 3 IRIX 6.5.14 yes 5065 Notes 2 & 3 IRIX 6.5.15 yes 5065 Notes 2 & 3 IRIX 6.5.16 yes 5065 Notes 2 & 3 IRIX 6.5.17 yes 5065 Notes 2 & 3 IRIX 6.5.18 yes 5065 Notes 2 & 3 IRIX 6.5.19 yes 5065 Notes 2 & 3 IRIX 6.5.20 yes 5065 Notes 2 & 3 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) If a version of Samba prior to 2.2.8a is installed, the system is vulnerable and you should upgrade to Samba 2.2.8 and install the patch. ##### Patch File Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.5065 Algorithm #1 (sum -r): 52833 8 README.patch.5065 Algorithm #2 (sum): 19672 8 README.patch.5065 MD5 checksum: FFB8A9F3304A2C9A793C8C8888E4CBD6 Filename: patchSG0005065 Algorithm #1 (sum -r): 21712 2 patchSG0005065 Algorithm #2 (sum): 7400 2 patchSG0005065 MD5 checksum: 2A80FB9188A81306441E0530200EC184 Filename: patchSG0005065.idb Algorithm #1 (sum -r): 65085 4 patchSG0005065.idb Algorithm #2 (sum): 64041 4 patchSG0005065.idb MD5 checksum: 2A5195E64FC6F093B733CA7C22A7B90C Filename: patchSG0005065.samba_irix_src Algorithm #1 (sum -r): 02420 284 patchSG0005065.samba_irix_src Algorithm #2 (sum): 29510 284 patchSG0005065.samba_irix_src MD5 checksum: 2E8049C4A7108726D8BF15026BCDE687 Filename: patchSG0005065.samba_irix_sw Algorithm #1 (sum -r): 16886 2400 patchSG0005065.samba_irix_sw Algorithm #2 (sum): 34027 2400 patchSG0005065.samba_irix_sw MD5 checksum: 457451125CFBACF454CE6C990E5CECC0 - ------------------------ - --- Acknowledgments ---- - ------------------------ SGI wishes to thank The Samba Team 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 fixes for SGI open sourced code can be found on: http://oss.sgi.com/projects/ 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. Security advisories and patches are located under the URL ftp://patches.sgi.com/support/free/security/ For security and patch management reasons, ftp.sgi.com (mirrors patches.sgi.com security FTP repository) lags behind and does not do a real-time update. - ----------------------------------------- - --- SGI Security Information/Contacts --- - ----------------------------------------- If there are questions about this document, email can be sent to security-info@sgi.com. ------oOo------ SGI provides security information and patches for use by the entire SGI community. This information is freely available to any person needing the information and is available via anonymous FTP and the Web. The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com. 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A support contract is not required for submitting a security report. ______________________________________________________________________________ This information is provided freely to all interested parties and may be redistributed provided that it is not altered in any way, SGI is appropriately credited and the document retains and includes its valid PGP signature. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBPpRcUrQ4cFApAP75AQEKMQP+Pp8FTIURkyimzflGu7wRpzKkBtTRBdW7 7XiZXWzVqM9Hy46uFkMme5+C6sA3+ah30tx6JZaYJb7mL8wSRMvsitQXF48Bl4Zy c3rJp7edEpxbhh+c2Wj4xYRLMolRX/lSZ8qAdmZcpOvWaUvTMOZlR6SmoqM1xp5B JtSTN9YbgG4= =Tc6B -----END PGP SIGNATURE-----