-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN SGI X server font path vulnerability SGI Security Advisory 19990301-01-PX March 10, 1999 17:00 GMT Number J-033 _____________________________________________________________________________ PROBLEM: A buffer overflow vulnerability has been discovered in the X server's font path which can lead to a root compromise. PLATFORM: All IRIX platforms that have X server installed. DAMAGE: With a local account, this vulnerability can be exploited to create a root compromise. SOLUTION: Apply the available patches. There are no immediate or temporary workarounds. _____________________________________________________________________________ VULNERABILITY This vulnerability has been publicly discussed in public ASSESSMENT: forums. It is HIGHLY RECOMMENDED that these measures be implemented on ALL vulnerable SGI systems. _____________________________________________________________________________ [ Start Silicon Graphics Advisory ] - -----BEGIN PGP SIGNED MESSAGE----- _____________________________________________________________________________ _ Silicon Graphics Inc. Security Advisory Title: X server font path buffer overflow vulnerability Number: 19990301-01-PX Date: March 8, 1999 _____________________________________________________________________________ _ Silicon Graphics provides this information freely to the SGI user community for its consideration, interpretation, implementation and use. Silicon Graphics recommends that this information be acted upon as soon as possible. Silicon Graphics 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 Silicon Graphics 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 --- - - ----------------------- A buffer overflow vulnerability has been discovered in the X server's font path which can lead to a root compromise. Silicon Graphics Inc. 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. This issue has been corrected in future releases of IRIX. - - -------------- - - --- Impact --- - - -------------- An X server is installed by default on all IRIX platforms. A local user account on the vulnerable system is required in order to exploit X server font path. The buffer overflow vulnerability can lead to a root compromise. This X server's font path vulnerability has been publicly discussed in Usenet newsgroups and mailing lists. - - -------------------------- - - --- Temporary Solution --- - - -------------------------- Unfortunately, there are no immediate or temporary workarounds for this issue. This issue can only be addressed with the installation of a patch. - - ---------------- - - --- Solution --- - - ---------------- OS Version Vulnerable? Patch # Other Actions ---------- ----------- ------- ------------- IRIX 3.x not tested Note 1 IRIX 4.x not tested Note 1 IRIX 5.0-5.2 not tested Note 1 IRIX 5.3 yes 3236 Note 1 IRIX 5.3 IMPACT yes 3237 Note 1 IRIX 6.0-6.1 not tested Note 1 IRIX 6.2 yes 3238 IRIX 6.3 yes 3239 Note 2 IRIX 6.4 yes 3240 Note 2 IRIX 6.5 yes 6.5.1 IRIX 6.5.1 no Note 3 IRIX 6.5.2 no Note 3 IRIX 6.5.3 no Note 3 NOTES 1) Upgrade to currently supported IRIX operating system. See http://support.sgi.com/news/irix2.html for more information. 2) This version of the IRIX operating system is in maintenance mode and patches will no longer be produced when it retires. See http://support.sgi.com/news/irix1.html for more information. 3) If you have not received an IRIX 6.5.Xm Maintenance Release Stream CD, contact your SGI Support Provider or download the IRIX 6.5.X Maintenance Release Stream from http://support.sgi.com/ or ftp://support.sgi.com/support/relstream/ Patches are available via anonymous FTP and your service/support provider. The primary SGI anonymous FTP site for security information and patches is sgigate.sgi.com (204.94.209.1). Security information and patches can be found in the ~ftp/security and ~ftp/patches directories, respectively. For security and patch management reasons, ftp.sgi.com (mirror of sgigate) lags behind and does not do a real-time update of ~ftp/security and ~ftp/patches ##### Patch File Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.3236 Algorithm #1 (sum -r): 06603 24 README.patch.3236 Algorithm #2 (sum): 38874 24 README.patch.3236 MD5 checksum: B70B58BE09A31A295ADF5968E34868C9 Filename: patchSG0003236 Algorithm #1 (sum -r): 55695 6 patchSG0003236 Algorithm #2 (sum): 60448 6 patchSG0003236 MD5 checksum: 8F0CD7AFC0F9C9ECD1E0EE9FEBE7D2F5 Filename: patchSG0003236.idb Algorithm #1 (sum -r): 31257 11 patchSG0003236.idb Algorithm #2 (sum): 28348 11 patchSG0003236.idb MD5 checksum: 8EB37E65BE5520DC9580E1BC1BD7EDE3 Filename: patchSG0003236.x_eoe_man Algorithm #1 (sum -r): 30512 5 patchSG0003236.x_eoe_man Algorithm #2 (sum): 47606 5 patchSG0003236.x_eoe_man MD5 checksum: CF72676A2F5BEDFA82B0DF0906247932 Filename: patchSG0003236.x_eoe_sw Algorithm #1 (sum -r): 31868 27352 patchSG0003236.x_eoe_sw Algorithm #2 (sum): 27353 27352 patchSG0003236.x_eoe_sw MD5 checksum: F966D810B94B2C49DD916CE77D1349D3 Filename: README.patch.3237 Algorithm #1 (sum -r): 42042 19 README.patch.3237 Algorithm #2 (sum): 32108 19 README.patch.3237 MD5 checksum: 1CD03DC13868BFE1AACD550937D41357 Filename: patchSG0003237 Algorithm #1 (sum -r): 16708 5 patchSG0003237 Algorithm #2 (sum): 44408 5 patchSG0003237 MD5 checksum: A1FE34B6B90FCE5605FEECACA69E2BC8 Filename: patchSG0003237.idb Algorithm #1 (sum -r): 34597 4 patchSG0003237.idb Algorithm #2 (sum): 62487 4 patchSG0003237.idb MD5 checksum: 9DC65EDE40F656CF334397327F70FDBA Filename: patchSG0003237.x_eoe_sw Algorithm #1 (sum -r): 51638 4124 patchSG0003237.x_eoe_sw Algorithm #2 (sum): 37973 4124 patchSG0003237.x_eoe_sw MD5 checksum: 3EA20B696FC29D2FB2A2D17E0B0D67B1 Filename: README.patch.3238 Algorithm #1 (sum -r): 37574 29 README.patch.3238 Algorithm #2 (sum): 41010 29 README.patch.3238 MD5 checksum: 2855F4846DB026E0C80D9FF2B24A50BE Filename: patchSG0003238 Algorithm #1 (sum -r): 01081 8 patchSG0003238 Algorithm #2 (sum): 194 8 patchSG0003238 MD5 checksum: D26CAAC6EE15E00741D8422D4694C094 Filename: patchSG0003238.idb Algorithm #1 (sum -r): 37049 11 patchSG0003238.idb Algorithm #2 (sum): 29814 11 patchSG0003238.idb MD5 checksum: AAF2CD97023C45436C4F6467F8F8D508 Filename: patchSG0003238.x_eoe_sw Algorithm #1 (sum -r): 46378 27624 patchSG0003238.x_eoe_sw Algorithm #2 (sum): 15031 27624 patchSG0003238.x_eoe_sw MD5 checksum: 2CA8349B26B271E2B1A55966B1988AA8 Filename: patchSG0003238.x_eoe_sw64 Algorithm #1 (sum -r): 16113 155 patchSG0003238.x_eoe_sw64 Algorithm #2 (sum): 13358 155 patchSG0003238.x_eoe_sw64 MD5 checksum: EB0BF0AB7BC4A443703059D03FA7B2A8 Filename: README.patch.3239 Algorithm #1 (sum -r): 40708 17 README.patch.3239 Algorithm #2 (sum): 13305 17 README.patch.3239 MD5 checksum: 4EA449C73B4A69DB13B8F8905051191B Filename: patchSG0003239 Algorithm #1 (sum -r): 52072 4 patchSG0003239 Algorithm #2 (sum): 52924 4 patchSG0003239 MD5 checksum: 464803D134A9C28F496C30DD97F4172E Filename: patchSG0003239.idb Algorithm #1 (sum -r): 06842 3 patchSG0003239.idb Algorithm #2 (sum): 36313 3 patchSG0003239.idb MD5 checksum: 14596BE72DAABE5BB11CE25218FEE845 Filename: patchSG0003239.x_eoe_sw Algorithm #1 (sum -r): 21439 6053 patchSG0003239.x_eoe_sw Algorithm #2 (sum): 2458 6053 patchSG0003239.x_eoe_sw MD5 checksum: 74060A329FCE4F5E7CFE1373CD1942CD Filename: README.patch.3240 Algorithm #1 (sum -r): 45983 19 README.patch.3240 Algorithm #2 (sum): 21359 19 README.patch.3240 MD5 checksum: C04847F2849B33F650CA0D436EFDD55E Filename: patchSG0003240 Algorithm #1 (sum -r): 21895 4 patchSG0003240 Algorithm #2 (sum): 43144 4 patchSG0003240 MD5 checksum: 508EBB6CC7F1A8EF9DD6E7EE96A9D9F4 Filename: patchSG0003240.idb Algorithm #1 (sum -r): 49776 2 patchSG0003240.idb Algorithm #2 (sum): 8475 2 patchSG0003240.idb MD5 checksum: EA734B3660F3833918B2E5758F3F3E20 Filename: patchSG0003240.x_eoe_sw Algorithm #1 (sum -r): 48894 4538 patchSG0003240.x_eoe_sw Algorithm #2 (sum): 60561 4538 patchSG0003240.x_eoe_sw MD5 checksum: 28CC420770E8C6CEE90E618C6933368E - - ------------------------ - - --- Acknowledgments --- - - ------------------------ Silicon Graphics wishes to thank CERT Coordination Center and the users of the Internet Community at large for their assistance in this matter. - - ----------------------------------------------------------- - - --- Silicon Graphics Inc. Security Information/Contacts --- - - ----------------------------------------------------------- If there are questions about this document, email can be sent to cse-security-alert@sgi.com. ------oOo------ Silicon Graphics 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 information and patches is sgigate.sgi.com (204.94.209.1). Security information and patches are located under the directories ~ftp/security and ~ftp/patches, respectively. The Silicon Graphics Security Headquarters Web page is accessible at the URL http://www.sgi.com/Support/security/security.html. For issues with the patches on the FTP sites, email can be sent to cse-security-alert@sgi.com. For assistance obtaining or working with security patches, please contact your SGI support provider. ------oOo------ Silicon Graphics provides a free security mailing list service called wiretap and encourages interested parties to self-subscribe to receive (via email) all SGI Security Advisories when they are released. Subscribing to the mailing list can be done via the Web (http://www.sgi.com/Support/security/wiretap.html) or by sending email to SGI as outlined below. % mail wiretap-request@sgi.com subscribe wiretap end ^d In the example above, is the email address that you wish the mailing list information sent to. The word end must be on a separate line to indicate the end of the body of the message. The control-d (^d) is used to indicate to the mail program that you are finished composing the mail message. ------oOo------ Silicon Graphics provides a comprehensive customer World Wide Web site. This site is located at http://www.sgi.com/Support/security/security.html. ------oOo------ For reporting *NEW* SGI security issues, email can be sent to security-alert@sgi.com or contact your SGI support provider. 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, Silicon Graphics is appropriately credited and the document retains and includes its valid PGP signature. - -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBNuRP8bQ4cFApAP75AQE1xgP7Bu92TNknV40tbXnGCbYJiKPQon2puYLF qWJMTHgNh4K1jLwjhArb8k/0Z+qcCvagkK0ny1JVDAD29lCaNfNyiA+ipmETZ0Gj Ufd4LvTHRY9Ugxw/o3yIW/dPy5HWFb9uSXrwDKBqOvxPDeaECJvrZG5Z82Pk7x95 n20L/HtY0Tk= =+ozO - -----END PGP SIGNATURE----- [ End Silicon Graphics Advisory ] _____________________________________________________________________________ CIAC wishes to acknowledge the contributions of Silicon Graphics Inc. for the information contained in this bulletin. _____________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). 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Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ (or http://ciac.llnl.gov -- they're the same machine) Anonymous FTP: ftp.ciac.org (or ciac.llnl.gov -- they're the same machine) Modem access: +1 (925) 423-4753 (28.8K baud) +1 (925) 423-3331 (28.8K baud) CIAC has several self-subscribing mailing lists for electronic publications: 1. CIAC-BULLETIN for Advisories, highest priority - time critical information and Bulletins, important computer security information; 2. SPI-ANNOUNCE for official news about Security Profile Inspector (SPI) software updates, new features, distribution and availability; 3. SPI-NOTES, for discussion of problems and solutions regarding the use of SPI products. Our mailing lists are managed by a public domain software package called Majordomo, which ignores E-mail header subject lines. 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Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. 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