-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN SGI IRIX rld Security Vulnerability May 29, 1997 20:00 GMT Number H-65 ______________________________________________________________________________ PROBLEM: A vulnerability has been identified with the runtime linker program, rld. PLATFORM: All SGI systems running IRIX 5.x and 6.x. DAMAGE: This vulnerability may allow local users to gain root privileges. SOLUTION: There are no immediate or temporary workarounds or patches available. SGI HIGHLY RECOMMENDS that the steps indicated below be used to neutralize exposure. ______________________________________________________________________________ VULNERABILITY Exploit information involving this vulnerability has been made ASSESSMENT: publicly avalable. Silicon Graphics recommends that this information be acted upon as soon as possible. ______________________________________________________________________________ [ Start Silicon Graphics Inc. Advisory ] - -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ Silicon Graphics Inc. Security Advisory Title: IRIX rld security vulnerability Number: 19970504-01-PX Date: May 28, 1997 ______________________________________________________________________________ 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 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. ______________________________________________________________________________ - - ------------------ - - --- Background --- - - ------------------ A security vulnerability has been found with the runtime linker program, rld, distributed in IRIX 5.x and 6.x. 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 running IRIX 5.x and 6.x versions. This issue has been corrected in more recent releases of IRIX and will be corrected in future releases of IRIX. - - -------------- - - --- Impact --- - - -------------- With normal installation, the runtime loader comes from the compiler_eoe.sw.unix subsystem and installs the program as /lib/rld. The compiler_eoe.sw.unix subsystem is installed by default on all systems. When running setuid and setgid programs, the rld program could be manipulated to bypass existing permissions. Local non-privileged users could gain root access. A local account is required in order to exploit this vulnerability both locally and remotely. It is believed that this vulnerability information is not public knowledge and this has afforded SGI the opportunity to fully investigate this issue and provide the following information and solutions. - - -------------------------- - - --- Temporary Solution --- - - -------------------------- Unfortunately, there are no immediate or temporary workarounds for this issue. The issue can only be addressed with a patch. - - ---------------- - - --- Solution --- - - ---------------- **** IRIX 5.0.x, 5.1.x, and 5.2 **** For the IRIX operating systems versions 5.0.x, 5.1.x and 5.2, an upgrade to 5.3 or better is required first. When the upgrade is completed, then the patches described in the following sections can be applied depending on the final version of the upgrade. **** IRIX 5.3 **** For the IRIX operating system version 5.3, an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 2064 and will install only on IRIX 5.3. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 2064 can be found in the following directories on the FTP server: ~ftp/Security or ~ftp/Patches/5.3 ##### Checksums ##### The actual patch will be a tar file containing the following files: Filename: README.patch.2064 Algorithm #1 (sum -r): 30021 10 README.patch.2064 Algorithm #2 (sum): 64614 10 README.patch.2064 MD5 checksum: DD579D28C4E03681E3DDC37FAF9AFCFF Filename: patchSG0002064 Algorithm #1 (sum -r): 24134 2 patchSG0002064 Algorithm #2 (sum): 45870 2 patchSG0002064 MD5 checksum: 1F2D5ECB6ADBDAFB6365406AA4827A12 Filename: patchSG0002064.compiler_eoe_sw Algorithm #1 (sum -r): 55484 1216 patchSG0002064.compiler_eoe_sw Algorithm #2 (sum): 37740 1216 patchSG0002064.compiler_eoe_sw MD5 checksum: 1532F8A3921D9DD3AC6D50198442A67A Filename: patchSG0002064.idb Algorithm #1 (sum -r): 38368 2 patchSG0002064.idb Algorithm #2 (sum): 48314 2 patchSG0002064.idb MD5 checksum: DC0FA7FF3F858ED0ACC534CD2D40A3C8 **** IRIX 6.0.X **** For the IRIX operating system version 6.0.X an upgrade to 6.2 or better is required first. When the upgrade is completed, then the patches described in the following sections can be applied depending on the final version of the upgrade. **** IRIX 6.1 **** For the IRIX operating system version 6.1, an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 2063 and will install only on IRIX 6.1. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 2063 can be found in the following directories on the FTP server: ~ftp/Security or ~ftp/Patches/6.1 ##### Checksums ##### The actual patch will be a tar file containing the following files: Filename: README.patch.2063 Algorithm #1 (sum -r): 31314 13 README.patch.2063 Algorithm #2 (sum): 56210 13 README.patch.2063 MD5 checksum: 0E17E595A7ABC2613FF18C91467E2BDF Filename: patchSG0002063 Algorithm #1 (sum -r): 04658 3 patchSG0002063 Algorithm #2 (sum): 30916 3 patchSG0002063 MD5 checksum: 7CE1365338900953F1D7A5B1272E7A9D Filename: patchSG0002063.compiler_eoe_sw Algorithm #1 (sum -r): 11620 1565 patchSG0002063.compiler_eoe_sw Algorithm #2 (sum): 20697 1565 patchSG0002063.compiler_eoe_sw MD5 checksum: 597EC199F813C9A9A0C6BFF3E267FE9F Filename: patchSG0002063.compiler_eoe_sw32 Algorithm #1 (sum -r): 47091 1362 patchSG0002063.compiler_eoe_sw32 Algorithm #2 (sum): 4329 1362 patchSG0002063.compiler_eoe_sw32 MD5 checksum: 897D631C08C82C2BE835DA7CCE6A1D19 Filename: patchSG0002063.compiler_eoe_sw64 Algorithm #1 (sum -r): 01609 1492 patchSG0002063.compiler_eoe_sw64 Algorithm #2 (sum): 18813 1492 patchSG0002063.compiler_eoe_sw64 MD5 checksum: 1EA6F43DAB7AFD6F23BF3E9009634DF6 Filename: patchSG0002063.idb Algorithm #1 (sum -r): 07313 3 patchSG0002063.idb Algorithm #2 (sum): 35453 3 patchSG0002063.idb MD5 checksum: C86B5B7340226153B1B76CE149056011 **** IRIX 6.2, 6.3, and 6.4 **** For the IRIX operating system version 6.2, 6.3, and 6.4 an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 2044 and will install only on IRIX 6.2, 6.3, and 6.4. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 2044 can be found in the following directories on the FTP server: ~ftp/Security or ~ftp/Patches/6.2 ~ftp/Patches/6.3 ~ftp/Patches/6.4 ##### Checksums ##### The actual patch will be a tar file containing the following files: Filename: README.patch.2044 Algorithm #1 (sum -r): 65374 16 README.patch.2044 Algorithm #2 (sum): 56364 16 README.patch.2044 MD5 checksum: 107FBCD8A9724184CD94D01222812FFC Filename: patchSG0002044 Algorithm #1 (sum -r): 05889 4 patchSG0002044 Algorithm #2 (sum): 23416 4 patchSG0002044 MD5 checksum: C4AE7226F10EA100EE94F79CF026BA46 Filename: patchSG0002044.compiler_eoe_hdr Algorithm #1 (sum -r): 21917 2 patchSG0002044.compiler_eoe_hdr Algorithm #2 (sum): 33214 2 patchSG0002044.compiler_eoe_hdr MD5 checksum: C98020C4E1BE50D4F3F62F57B3004671 Filename: patchSG0002044.compiler_eoe_sw Algorithm #1 (sum -r): 25902 2928 patchSG0002044.compiler_eoe_sw Algorithm #2 (sum): 33620 2928 patchSG0002044.compiler_eoe_sw MD5 checksum: DF381409E88A75FC90F36C6411C0373D Filename: patchSG0002044.compiler_eoe_sw64 Algorithm #1 (sum -r): 53052 1492 patchSG0002044.compiler_eoe_sw64 Algorithm #2 (sum): 18816 1492 patchSG0002044.compiler_eoe_sw64 MD5 checksum: 50BF2098C4B45A8E23991A43348DD59B Filename: patchSG0002044.idb Algorithm #1 (sum -r): 29600 3 patchSG0002044.idb Algorithm #2 (sum): 47757 3 patchSG0002044.idb MD5 checksum: 8B986CF0C42FB8C48667DAA91C214E00 - - ------------------------ - - --- Acknowledgments --- - - ------------------------ Silicon Graphics wishes to thank Marko Laakso from the University of Oulu and AUSCERT for their assistance and cooperation in this matter. - - ----------------------------------------- - - --- SGI Security Information/Contacts --- - - ----------------------------------------- If there are questions about this document, email can be sent to cse-security-alert@csd.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/Secur/security.html. For issues with the patches on the FTP sites, email can be sent to cse-security-alert@csd.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/Secur/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/Secur/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 iQCVAwUBM4y5zbQ4cFApAP75AQGvFgP8DoQeo3A08dGqauLQHt4aZ8BkNK/GHWNq vXx1kz0oePKVjvc16tvqMb9SF6ixc25Wn3ObnNSyHB/gvRG8YgLhbV/m0jDtb5mP Mt1nxEu1ehuRRJ/EFUYTDrKI0WsKMIESCTgR7RzKTRrHqWDm/kBD6NTTQffHgw3X 7ZIkQKZ+FzI= =hqoY - -----END PGP SIGNATURE----- [ End Silicon Graphics Inc. Advisory ] ______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Silicon Graphics Inc.,AUSCERT and Marko Laakso from the University of Oulu 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). 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: +1 510-422-8193 FAX: +1 510-423-8002 STU-III: +1 510-423-2604 E-mail: ciac@llnl.gov For emergencies and off-hour assistance, DOE, DOE contractor sites, and the NIH may contact CIAC 24-hours a day. During off hours (5PM - 8AM PST), call the CIAC voice number 510-422-8193 and leave a message, or call 800-759-7243 (800-SKY-PAGE) to send a Sky Page. CIAC has two Sky Page PIN numbers, the primary PIN number, 8550070, is for the CIAC duty person, and the secondary PIN number, 8550074 is for the CIAC Project Leader. Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://ciac.llnl.gov/ Anonymous FTP: ciac.llnl.gov (128.115.19.53) Modem access: +1 (510) 423-4753 (28.8K baud) +1 (510) 423-3331 (28.8K baud) CIAC has several self-subscribing mailing lists for electronic publications: 1. 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To subscribe (add yourself) to one of our mailing lists, send the following request as the E-mail message body, substituting ciac-bulletin, ciac-notes, spi-announce OR spi-notes for list-name: E-mail to ciac-listproc@llnl.gov or majordomo@tholia.llnl.gov: subscribe list-name e.g., subscribe ciac-notes You will receive an acknowledgment email immediately with a confirmation that you will need to mail back to the addresses above, as per the instructions in the email. This is a partial protection to make sure you are really the one who asked to be signed up for the list in question. If you include the word 'help' in the body of an email to the above address, it will also send back an information file on how to subscribe/unsubscribe, get past issues of CIAC bulletins via email, etc. PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. 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. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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