__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Center ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN SGI Mail, mailx, sort, timed, and gzip Vulnerabilities [SGI Security Advisory 20020401-02-P] April 11, 2002 21:00 GMT Number M-067 ______________________________________________________________________________ PROBLEM: SGI has identified vulnerabilities in Mail, mailx, sort, timed, and gzip. These vulnerabilities could lead to a denial-of-service or root exploit. PLATFORM: These utilities are all installed by default on all IRIX 6.5 systems. All IRIX 6.5 systems are vulnerable except IRIX 6.5.16. DAMAGE: An attacker can cause a denial-of-service or gain root privileges. Some vulnerabilities might be exploited remotely. SOLUTION: Install the appropriate patch or upgrade to IRIX 6.5.16. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Some of the vulnerabilities identified in ASSESSMENT: this advisory require a local user account. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/m-067.shtml ORIGINAL BULLETIN: ftp://patches.sgi.com/support/free/security/advisories/20020401-02-P ______________________________________________________________________________ [***** Start SGI Security Advisory 20020401-02-P *****] -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SGI Security Advisory Title: Mail, mailx, sort, timed and gzip vulnerabilities Number: 20020401-02-P Date: April 11, 2002 Reference: CAN-2002-0041 Mail -R coredumps Reference: CVE-2001-0565 mailx -F coredumps Reference: CVE-2001-0310 sort uses predictable temp files Reference: CVE-2001-0388 timed can die when sent malformed packets Reference: CAN-2001-1228 gzip buffer overflow ______________________________________________________________________________ - ------------------- - --- Update Info --- - ------------------- Updated title, inserted CVE reference numbers and clarified the Impact section. - ----------------------- - --- Issue Specifics --- - ----------------------- It has been reported that certain standard utilities in IRIX had security issues: o "mailx" and "Mail" could be made to dump core o "sort" was using predictably-named temporary files o "timed" could die when sent null packets o "gzip" had a buffer overflow vulnerability These vulnerabilities could lead to a denial-of-service or root exploit. In the case of Mail/mailx, a local account may not be required. SGI has investigated the issues 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 IRIX. - -------------- - --- Impact --- - -------------- These utilities are all installed by default on all IRIX 6.5 systems. The timed vulnerability may be exploited by a remote user, and no local account is required. The mailx and Mail vulnerabilities currently require a local account to be exploited, but can be possibly extended to be a remote exploit which requires no local account. The sort and gzip vulnerabilities require a local account in order to be exploited. These vulnerabilities were assigned the following CVEs: CVE-2001-0310 sort uses predictable temp files http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0310 ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:13.sort.asc CVE-2001-0388 timed can die when sent malformed packets http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0388 http://online.securityfocus.com/archive/1/168579 CVE-2001-0565 mailx -F coredumps http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0565 CAN-2001-1228 gzip buffer overflow http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-1228 http://archives.neohapsis.com/archives/vuln-dev/2001-q4/0465.html CAN-2002-0041 Mail -R coredumps http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0041 - ---------------------------- - --- Temporary Workaround --- - ---------------------------- There is no effective workaround available for these problems. SGI recommends either upgrading to IRIX 6.5.16 when it is released, or installing the appropriate patch from the listing below. - ---------------- - --- Solution --- - ---------------- SGI has provided patches for these vulnerabilities. Our recommendation is to upgrade to IRIX 6.5.16 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 yes Notes 2 & 3 IRIX 6.5.1 yes Notes 2 & 3 IRIX 6.5.2 yes Notes 2 & 3 IRIX 6.5.3 yes Notes 2 & 3 IRIX 6.5.4 yes Notes 2 & 3 IRIX 6.5.5 yes Notes 2 & 3 IRIX 6.5.6 yes Notes 2 & 3 IRIX 6.5.7 yes Notes 2 & 3 IRIX 6.5.8 yes Notes 2 & 3 IRIX 6.5.9 yes Notes 2 & 3 IRIX 6.5.10 yes Notes 2 & 3 IRIX 6.5.11m yes Notes 2 & 3 IRIX 6.5.11f yes Notes 2 & 3 IRIX 6.5.12m yes 4534 IRIX 6.5.12f yes 4535 IRIX 6.5.13m yes 4534 IRIX 6.5.13f yes 4535 IRIX 6.5.14m yes 4534 IRIX 6.5.14f yes 4535 IRIX 6.5.15m yes 4534 IRIX 6.5.15f yes 4535 IRIX 6.5.16 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/irix/news/index.html#policy 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/irix/swupdates/ 3) Upgrade to IRIX 6.5.16m or 6.5.16f. Security patches can be found on: ftp://patches.sgi.com/support/free/security/patches/ and http://support.sgi.com/irix/ ##### Patch File Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.4534 Algorithm #1 (sum -r): 13804 8 README.patch.4534 Algorithm #2 (sum): 43355 8 README.patch.4534 MD5 checksum: 83E7A7D05DDF3E173309056F3FBB7118 Filename: patchSG0004534 Algorithm #1 (sum -r): 05536 4 patchSG0004534 Algorithm #2 (sum): 64119 4 patchSG0004534 MD5 checksum: 68E26B998FDC80EE323C2F6A606713B6 Filename: patchSG0004534.eoe_man Algorithm #1 (sum -r): 08170 18 patchSG0004534.eoe_man Algorithm #2 (sum): 57899 18 patchSG0004534.eoe_man MD5 checksum: 7CF0A1FD73120A7FD8994ACCF3FAD2F7 Filename: patchSG0004534.eoe_src Algorithm #1 (sum -r): 08489 45 patchSG0004534.eoe_src Algorithm #2 (sum): 5610 45 patchSG0004534.eoe_src MD5 checksum: F779DA0E1D6BE7DD85628F1353A51721 Filename: patchSG0004534.eoe_sw Algorithm #1 (sum -r): 30309 593 patchSG0004534.eoe_sw Algorithm #2 (sum): 3676 593 patchSG0004534.eoe_sw MD5 checksum: A381709E021AB90ACCC5699A23252073 Filename: patchSG0004534.idb Algorithm #1 (sum -r): 03657 3 patchSG0004534.idb Algorithm #2 (sum): 39027 3 patchSG0004534.idb MD5 checksum: B02861A4AAAA0A55FC948DABE336A5FE Filename: README.patch.4535 Algorithm #1 (sum -r): 06473 8 README.patch.4535 Algorithm #2 (sum): 43295 8 README.patch.4535 MD5 checksum: 04E693105557879E040221FCCB5451B8 Filename: patchSG0004535 Algorithm #1 (sum -r): 18098 4 patchSG0004535 Algorithm #2 (sum): 4005 4 patchSG0004535 MD5 checksum: 537B4360CC89815E68A11A06494F6EE0 Filename: patchSG0004535.eoe_man Algorithm #1 (sum -r): 08170 18 patchSG0004535.eoe_man Algorithm #2 (sum): 57899 18 patchSG0004535.eoe_man MD5 checksum: 7CF0A1FD73120A7FD8994ACCF3FAD2F7 Filename: patchSG0004535.eoe_src Algorithm #1 (sum -r): 51272 45 patchSG0004535.eoe_src Algorithm #2 (sum): 60860 45 patchSG0004535.eoe_src MD5 checksum: C1E9DA4D44A5403A8C6D1445E6CD6D88 Filename: patchSG0004535.eoe_sw Algorithm #1 (sum -r): 07781 595 patchSG0004535.eoe_sw Algorithm #2 (sum): 26585 595 patchSG0004535.eoe_sw MD5 checksum: 6CC83AF18C45DECA0F4D4E73B69E39DA Filename: patchSG0004535.idb Algorithm #1 (sum -r): 07659 3 patchSG0004535.idb Algorithm #2 (sum): 39136 3 patchSG0004535.idb MD5 checksum: BE50603142EFEC2EC1515E4D6BA10235 - ------------------------ - --- Acknowledgments ---- - ------------------------ SGI wishes to thank CERT, GOBBLES, NASA, Walter Roberson and the users of the Internet Community at large for their assistance in this matter. - ------------------ - --- References --- - ------------------- 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/irix/ 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/linux/ or http://oss.sgi.com/projects/sgilinux-combined/download/security-fixes/ SGI patches for Windows NT or 2000 can be found at: http://support.sgi.com/nt/ IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at: http://support.sgi.com/irix/ and ftp://patches.sgi.com/support/patchset/ IRIX 6.5 Maintenance Release Streams can be found at: http://support.sgi.com/colls/patches/tools/relstream/index.html IRIX 6.5 Software Update CDs can be obtained from: http://support.sgi.com/irix/swupdates/ The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com (216.32.174.211). 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 (216.32.174.211). Security advisories and patches are located under the URL ftp://patches.sgi.com/support/free/security/ The SGI Security Headquarters Web page is accessible at the URL: http://www.sgi.com/support/security/ For issues with the patches on the FTP sites, email can be sent to security-info@sgi.com. For assistance obtaining or working with security patches, please contact your SGI support provider. ------oOo------ SGI 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------ SGI provides a comprehensive customer World Wide Web site. This site is located at http://www.sgi.com/support/security/ . ------oOo------ If there are general security questions on SGI systems, email can be sent to security-info@sgi.com. 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, SGI is appropriately credited and the document retains and includes its valid PGP signature. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBPLXpgrQ4cFApAP75AQGAPAP/eVfJD/HL1PjOysJlq0USfH1cPY3VoBbe 8co5/TC2OzQLeZtlftkyJ1iJngJzaHPKehQiXcPQYr2F9+11vumo4bmEXFSwYe0E OD6qOZ6N/s1yrtADegZQPZSycjQmQC9A6xYz27B+QzuSBcjaAavMpEE30VCvdDaL fFHEY+Upd/o= =zEQK -----END PGP SIGNATURE----- [***** End SGI Security Advisory 20020401-02-P *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Silicon Graphics, Inc. (SGI) for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Center, 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). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. 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