From agent99@sgi.com Wed Dec 3 17:02:39 2003 From: SGI Security Coordinator To: agent99@sgi.com Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, vulnwatch@vulnwatch.org Newsgroups: comp.sys.sgi.announce, comp.security.unix, comp.sys.sgi.admin, comp.security.announce Date: Wed, 3 Dec 2003 11:02:30 -0800 Subject: Multiple OpenSSH/OpenSSL Vulnerabilities Update on IRIX -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SGI Security Advisory Title : Multiple OpenSSH/OpenSSL Vulnerabilities Update Number : 20030904-02-P Date : December 3, 2003 Reference : CERT CA-2003-24 Reference : CVE CAN-2003-0693 CAN-2003-0695 CAN-2003-0682 (OpenSSH) Reference : CVE CAN-2003-0786 CAN-2003-0787 (PAM and OpenSSH) Reference : CVE CAN-2003-0543 CAN-2003-0544 CAN-2003-0545 (OpenSSL) Reference : CVE CAN-2003-0851 (OpenSSL ASN.1) Reference : SGI BUGs 900744 899663 (OpenSSH) Reference : SGI BUGs 900564 904644 (OpenSSL) Reference : SGI BUGs 901671 901706 901710 (Updates) Fixed in : IRIX 6.5.22 and patches for IRIX 6.5.19-6.5.21 ______________________________________________________________________________ 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. ______________________________________________________________________________ - -------------- - --- Update --- - -------------- This is an update to SGI Security Advisory 20030904-01-P. The original OpenSSH and OpenSSL packages did not have incremented version numbers, so it was difficult to determine if a system was vulnerable or fixed after the packages were installed. (SGI BUG 901671) IRIX 6.5.20 and above include Kerberos. IRIX 6.5.19 does not have Kerberos, so there was a conflict with the OpenSSL package. Patches are being released to address this problem on IRIX 6.5.19. (SGI BUG 901706) There was an additional OpenSSL ASN.1 vulnerability reported by: http://www.uniras.gov.uk/vuls/2003/006489/openssl2.htm http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0851 which has been fixed by these updated patches. (SGI BUG 904644) - ----------------------- - --- Issue Specifics --- - ----------------------- It has been reported that OpenSSH/OpenSSL that ships with IRIX has several security vulnerabilities that may lead to root access on vulnerable systems. 1) buffer.c vulnerability fixed in OpenSSH 3.7 (CAN-2003-0693) http://marc.theaimsgroup.com/?l=bugtraq&m=106373247528528&w=2 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0693 2) More buffer management vulnerabilities fixed in OpenSSH 3.7.1 (CAN-2003-0695) http://www.openssh.com/txt/buffer.adv http://www.cert.org/advisories/CA-2003-24.html http://www.kb.cert.org/vuls/id/333628 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0695 3) Openwall's "memory" security fixes to OpenSSH 3.7.1 (CAN-2003-0682) http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0682 4) ssh-keysign cores dump on IRIX (SGI BUG 899663) 5) Multiple OpenSSL vulnerabilities in ASN.1 parsing http://www.openssl.org/news/secadv_20030930.txt http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545 Please note that the OpenSSH which ships with IRIX is NOT vulnerable to the two recent PAM vulnerabilities found in portable OpenSSH 3.7/3.7.1: http://www.openssh.com/txt/sshpam.adv http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0786 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0787 * However, the Freeware OpenSSH from http://freeware.sgi.com/ is PAM enabled and possibly vulnerable to these issues. 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 vulnerabilities have been corrected in future releases of IRIX. - -------------- - --- Impact --- - -------------- OpenSSH client is installed by default on IRIX 6.5.19 and above. OpenSSH server is provided on IRIX 6.5.19 and above, but not installed by default. OpenSSL libraries are installed by default on IRIX 6.5.19 and above To determine the version of OpenSSH you are running, execute the following command: % versions -b openssh openssl This will return a result similar to the following output: I = Installed, R = Removed Name Date Description I openssh 09/16/2003 OpenSSH server and client tools, 3.6.1p2 I openssl 09/16/2003 openssl libraries, 0.9.7b If the output is similar to the above, then OpenSSH/OpenSSL are installed and the system may be vulnerable unless patched. - ---------------------------- - --- Temporary Workaround --- - ---------------------------- There is no effective workaround available for these vulnerabilities. SGI recommends upgrading to IRIX 6.5.22 or installing the appropriate patches. - ---------------- - --- Solution --- - ---------------- SGI has provided a series of patches for these vulnerabilities. Our recommendation is to upgrade to IRIX 6.5.22, or install the appropriate patches. SGI Freeware team has also provided an updated OpenSSH 3.7.1p2 package available from http://freeware.sgi.com/Dist/fw_openssh-3.7.1p2.tardist Freeware is not supported by SGI. OS Version Vulnerable? Patch # Other Actions - ---------- ----------- ------- ------------- IRIX 6.5.19m yes 5362 Notes 1 & 2 IRIX 6.5.19f yes 5362 Notes 1 & 2 IRIX 6.5.20m yes 5405 Notes 1 & 2 IRIX 6.5.20f yes 5405 Notes 1 & 2 IRIX 6.5.21m yes 5363 Notes 1 & 2 IRIX 6.5.21f yes 5363 Notes 1 & 2 IRIX 6.5.22 no Notes 1 & 2 NOTES 1) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your SGI Support Provider or visit URL: http://support.sgi.com/ 2) Install the required patch(es) based on your operating release. ##### Patch File Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.5362 Algorithm #1 (sum -r): 08697 9 README.patch.5362 Algorithm #2 (sum): 9584 9 README.patch.5362 MD5 checksum: 648E54CF2F596B14754A55BAEC60D4D1 Filename: patchSG0005362 Algorithm #1 (sum -r): 00644 9 patchSG0005362 Algorithm #2 (sum): 35504 9 patchSG0005362 MD5 checksum: BE764909D184D5BEAECC94E043D23DD8 Filename: patchSG0005362.idb Algorithm #1 (sum -r): 46379 341 patchSG0005362.idb Algorithm #2 (sum): 33666 341 patchSG0005362.idb MD5 checksum: 0C7F3BAB71A95530D50023AB06FBC86C Filename: patchSG0005362.openssh_man Algorithm #1 (sum -r): 55192 291 patchSG0005362.openssh_man Algorithm #2 (sum): 61501 291 patchSG0005362.openssh_man MD5 checksum: 43DEC1544C12792B204B45CE44ED0C63 Filename: patchSG0005362.openssh_sw Algorithm #1 (sum -r): 03650 4080 patchSG0005362.openssh_sw Algorithm #2 (sum): 35524 4080 patchSG0005362.openssh_sw MD5 checksum: 24EC1366E5B021FF02393F6CA95B5BC8 Filename: patchSG0005362.openssl_man Algorithm #1 (sum -r): 02618 2359 patchSG0005362.openssl_man Algorithm #2 (sum): 14996 2359 patchSG0005362.openssl_man MD5 checksum: 2376774791FCE5680AF9DCBDEF25C959 Filename: patchSG0005362.openssl_sw Algorithm #1 (sum -r): 19445 9813 patchSG0005362.openssl_sw Algorithm #2 (sum): 28327 9813 patchSG0005362.openssl_sw MD5 checksum: 53890E5CBE2ECFD1FB4A640A3E7EDD0D Filename: README.patch.5363 Algorithm #1 (sum -r): 20016 8 README.patch.5363 Algorithm #2 (sum): 39948 8 README.patch.5363 MD5 checksum: E49DF4FF468BA3279FB68198F77EC754 Filename: patchSG0005363 Algorithm #1 (sum -r): 01509 4 patchSG0005363 Algorithm #2 (sum): 477 4 patchSG0005363 MD5 checksum: 3BC22E303DE7038C218318CC45B8D047 Filename: patchSG0005363.idb Algorithm #1 (sum -r): 08920 7 patchSG0005363.idb Algorithm #2 (sum): 3872 7 patchSG0005363.idb MD5 checksum: 12FDBDAC9B88C2A7DF5C0199DBEC823D Filename: patchSG0005363.openssh_sw Algorithm #1 (sum -r): 25243 3990 patchSG0005363.openssh_sw Algorithm #2 (sum): 62195 3990 patchSG0005363.openssh_sw MD5 checksum: B6A76D90A75ED3A4833CDE1160355405 Filename: patchSG0005363.openssl_sw Algorithm #1 (sum -r): 49172 6722 patchSG0005363.openssl_sw Algorithm #2 (sum): 30923 6722 patchSG0005363.openssl_sw MD5 checksum: 8A20A369CE05B3212CD086B21F2290D3 Filename: README.patch.5405 Algorithm #1 (sum -r): 55551 9 README.patch.5405 Algorithm #2 (sum): 9918 9 README.patch.5405 MD5 checksum: ACB4D526DA0735CE9769DF1063B8404C Filename: patchSG0005405 Algorithm #1 (sum -r): 50297 9 patchSG0005405 Algorithm #2 (sum): 34949 9 patchSG0005405 MD5 checksum: 87334D425A325C51852B2F15FFB7737E Filename: patchSG0005405.idb Algorithm #1 (sum -r): 43781 341 patchSG0005405.idb Algorithm #2 (sum): 31743 341 patchSG0005405.idb MD5 checksum: 753F735C29585EABD739DE65A633C3CD Filename: patchSG0005405.openssh_man Algorithm #1 (sum -r): 53881 291 patchSG0005405.openssh_man Algorithm #2 (sum): 15235 291 patchSG0005405.openssh_man MD5 checksum: 5C45134C85409C0B1C3FCD3D71742A49 Filename: patchSG0005405.openssh_sw Algorithm #1 (sum -r): 62942 4077 patchSG0005405.openssh_sw Algorithm #2 (sum): 2173 4077 patchSG0005405.openssh_sw MD5 checksum: ED908D5304C6BC6B44DC468255561F46 Filename: patchSG0005405.openssl_man Algorithm #1 (sum -r): 56650 2427 patchSG0005405.openssl_man Algorithm #2 (sum): 36163 2427 patchSG0005405.openssl_man MD5 checksum: 8F45B002FB00AE0FE2F86741FE0217F6 Filename: patchSG0005405.openssl_sw Algorithm #1 (sum -r): 22315 9916 patchSG0005405.openssl_sw Algorithm #2 (sum): 14853 9916 patchSG0005405.openssl_sw MD5 checksum: ED425E33ADDE30EB27277B5F8D7E1C5C - ------------------------ - --- Acknowledgments ---- - ------------------------ SGI wishes to thank OpenSSH.org, OpenSSL.org, Openwall, WM-data and UNIRAS 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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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 iQCVAwUBP84xo7Q4cFApAP75AQFGXQQAlPN+BdZrLYHqHkRTz4MdeB8OXuNCiZ5p ih9sNmH7mYt42DdGHktBqQKFaMW49w570ckk5diAdi1i2QibqkSVsBMI8rTUByFT EYsbsytmAxZTwkFTUw/hTQHdk88BQTewCylTDSvbDZ52Sy7UcGzC+Iu/vzZM1C3y ZnL75cUDFAc= =Zxu/ -----END PGP SIGNATURE-----