************************************************************************** Security Bulletin 9601 DISA Defense Communications System January 17, 1996 Published by: DISN Security Coordination Center (SCC@NIC.DDN.MIL) 1-(800) 365-3642 DEFENSE INFORMATION SYSTEM NETWORK SECURITY BULLETIN The DISN SECURITY BULLETIN is distributed by the DISN SCC (Security Coordination Center) under DISA contract as a means of communicating information on network and host security exposures, fixes, and concerns to security and management personnel at DISN facilities. Back issues may be obtained via FTP (or Kermit) from NIC.DDN.MIL [192.112.36.5] using login="anonymous" and password="guest". The bulletin pathname is scc/sec-yynn (where "yy" is the year the bulletin is issued and "nn" is a bulletin number, e.g. scc/sec-9544.txt). These are also available at our WWW site, http://nic.ddn.mil. ************************************************************************** + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + ! ! ! The following important advisory was issued by the Automated ! ! Systems Security Incident Support Team (ASSIST) and is being ! ! relayed unedited via the Defense Information Systems Agency's ! ! Security Coordination Center distribution system as a means ! ! of providing DISN subscribers with useful security information. ! ! ! + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Automated Systems Security Incident Support Team _____ ___ ___ _____ ___ _____ | / /\ / \ / \ | / \ | | / Integritas / \ \___ \___ | \___ | | < et /____\ \ \ | \ | | \ Celeritas / \ \___/ \___/ __|__ \___/ | |_____\ <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Bulletin 96-01 Release date: 16 January, 1996, 3:00 PM EST (GMT -5) SUBJECT: Object Server Vulnerability in the IRIX 5.x and IRIX 6.x Operating Systems. SUMMARY: Silicon Graphics has discovered a security vulnerability within the object server program used in the IRIX 5.x and IRIX 6.x operating systems. SGI has investigated this issue and recommends the steps listed in the RECOMMENDED SOLUTIONS section of this bulletin for neutralizing the exposure. BACKGROUND: It is HIGHLY RECOMMENDED that the measures listed in the RECOMMENDED SOLUTIONS section of this bulletin be implemented on ALL SGI systems running IRIX 5.2, 5.3, 6.0, 6.0.1 and 6.1. This issue will be corrected in future releases of IRIX. Note: See ASSIST Bulletin 95-45 for SGI's Patch for Telnetd Environment Vulnerability. ___________________________________________________________________________ Silicon Graphics provides this information freely to the SGI community for its consideration, interpretation and implementation. Silicon Graphics recommends that this information be acted upon as soon as possible. Silicon Graphics will not be liable for any consequential damages arising from the use of, or failure to use or use properly, any of the instructions or information in this Security Advisory. ____________________________________________________________________________ IMPACT: Provided with the correct network configuration and SGI environment, both local and remote users may be able to become root on a targeted SGI system. RECOMMENDED SOLUTIONS: The solution for this issue is a replacement of the object server program and assistant programs for those versions that are vulnerable. The following patches have been generated for those versions vulnerable and are freely provided to the SGI community. **** IRIX 3.x **** This version of IRIX is not vulnerable. No action is required. **** IRIX 4.x **** This version of IRIX is not vulnerable. No action is required. **** IRIX 5.0.x, 5.1.x **** For the IRIX operating systems versions 5.0.x, 5.1.x, an upgrade to 5.2 or better is required first. When the upgrade is completed, then the patches described in the next sections "**** IRIX 5.2, 6.0, 6.0.1 ***" or "**** IRIX 5.3 ****" or "**** IRIX 6.1 ****" can be applied depending on the final version of upgrade. **** IRIX 5.2, 6.0, 6.0.1 **** For the IRIX operating system versions 5.2, 6.0, and 6.0.1, an inst-able patch has been generated and made available via anonymous ftp and/or your service/support provider. The patch is number 1052 and will only install on IRIX versions 5.2, 6.0, and 6.0.1 . The SGI anonymous ftp site is sgigate.sgi.com (204.94.209.1). Patch 1052 can be found in the following directories on the ftp server: ~ftp/Security or ~ftp/Patches/5.2 ~ftp/Patches/6.0 ~ftp/Patches/6.0.1 ##### Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.1052 Algorithm #1 (sum -r): 16512 8 README.patch.1052 Algorithm #2 (sum): 59284 8 README.patch.1052 MD5 checksum: 4E8FA3A3305C68BC18EC52564C6B2AED Filename: patchSG0001052 Algorithm #1 (sum -r): 51587 1 patchSG0001052 Algorithm #2 (sum): 32069 1 patchSG0001052 MD5 checksum: E0E3487A8A36A8B854BD704E35CA7245 Filename: patchSG0001052.cadmin_sw Algorithm #1 (sum -r): 63062 548 patchSG0001052.cadmin_sw Algorithm #2 (sum): 51720 548 patchSG0001052.cadmin_sw MD5 checksum: E8612BF40C60DBC9D7A90FAC6F8EF102 Filename: patchSG0001052.idb Algorithm #1 (sum -r): 07247 1 patchSG0001052.idb Algorithm #2 (sum): 40615 1 patchSG0001052.idb MD5 checksum: 580F688D98950F250BF47AC82EB91FFB **** IRIX 5.3 **** For the 5.3 IRIX operating system, an inst-able patch has been generated and made available via anonymous ftp and/or your service/support provider. The patch is number 1048 and will only install on IRIX 5.3 . The SGI anonymous ftp site is sgigate.sgi.com (204.94.209.1). Patch 1048 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.1048 Algorithm #1 (sum -r): 37177 9 README.patch.1048 Algorithm #2 (sum): 1825 9 README.patch.1048 MD5 checksum: D0CE2B1132B417F3B9215AA9F85CA073 Filename: patchSG0001048 Algorithm #1 (sum -r): 42189 4 patchSG0001048 Algorithm #2 (sum): 56038 4 patchSG0001048 MD5 checksum: 456BF186B65A56EA413E9E7AD4BDE17A Filename: patchSG0001048.cadmin_sw Algorithm #1 (sum -r): 47788 698 patchSG0001048.cadmin_sw Algorithm #2 (sum): 55041 698 patchSG0001048.cadmin_sw MD5 checksum: 7E3239ED9F110567B02176EC16B93F94 Filename: patchSG0001048.eoe1_sw Algorithm #1 (sum -r): 53666 12 patchSG0001048.eoe1_sw Algorithm #2 (sum): 30809 12 patchSG0001048.eoe1_sw MD5 checksum: 32F087EB64444279DF865D104664BE47 Filename: patchSG0001048.eoe2_sw Algorithm #1 (sum -r): 01942 132 patchSG0001048.eoe2_sw Algorithm #2 (sum): 33035 132 patchSG0001048.eoe2_sw MD5 checksum: E5242DE17431D40BC5FCD49925BE3283 Filename: patchSG0001048.idb Algorithm #1 (sum -r): 37645 2 patchSG0001048.idb Algorithm #2 (sum): 10420 2 patchSG0001048.idb MD5 checksum: 460C69356D5AA920978F7A9FF49A4612 **** 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/or your service/support provider. The patch is number 1090 and will install on IRIX 6.1 . The SGI anonymous ftp site is sgigate.sgi.com (204.94.209.1). Patch 1090 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.1090 Algorithm #1 (sum -r): 28420 8 README.patch.1090 Algorithm #2 (sum): 59862 8 README.patch.1090 MD5 checksum: 7CA042E478210D2E90A93F9B71D31455 Filename: patchSG0001090 Algorithm #1 (sum -r): 38512 1 patchSG0001090 Algorithm #2 (sum): 37227 1 patchSG0001090 MD5 checksum: 7A266E0BFCE18322F7034BB4520C6824 Filename: patchSG0001090.cadmin_sw Algorithm #1 (sum -r): 45703 689 patchSG0001090.cadmin_sw Algorithm #2 (sum): 29950 689 patchSG0001090.cadmin_sw MD5 checksum: 9EB38D49CDDF439EE1110797FEC5BC6B Filename: patchSG0001090.idb Algorithm #1 (sum -r): 46990 1 patchSG0001090.idb Algorithm #2 (sum): 40298 1 patchSG0001090.idb MD5 checksum: 05E8F138BF0331BFEF8454074519F40A <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ASSIST would like to thank Silicon Graphics Inc. for the information contained in this bulletin. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ASSIST is an element of the Defense Information Systems Agency (DISA), and provides service to the entire DoD community. Constituents of the DoD with questions about ASSIST or computer security issues, can contact ASSIST using one of the methods listed below. Non-DoD organizations/institutions, contact the Forum of Incident Response and Security Teams (FIRST) representative. To obtain a list of FIRST member organizations and their constituencies send an email to docserver@first.org with an empty "subject" line and a message body containing the line "send first-contacts". ASSIST Information Resources: To be included in the distribution list for the ASSIST bulletins, send your Milnet (Internet) e-mail address to assist-request@assist.mil. Back issues of ASSIST bulletins, and other security related information, are available from the ASSIST BBS at 703-607-4710, 327-4710, and through anonymous FTP from assist.mil (IP address 199.211.123.11). Note: assist.mil will only accept anonymous FTP connections from Milnet addresses that are registered with the NIC or DNS. If your system is not registered, you must provide your MILNET IP address to ASSIST before access can be provided. ASSIST Contact Information: PHONE: 800-357-4231, COMM 703-607-4700, DSN 327-4700. ELECTRONIC MAIL: assist@assist.mil. ASSIST BBS: COMM 703-607-4710, DSN 327-4710, leave a message for the "sysop". FAX: COMM 703-607-4735, DSN 607-4735 ASSIST uses Pretty Good Privacy (PGP) 2.6.2 as the digital signature mechanism for bulletins. PGP 2.6.2 incorporates the RSAREF(tm) Cryptographic Toolkit under license from RSA Data Security, Inc. A copy of that license is available via anonymous FTP from net-dist.mit.edu (IP 18.72.0.3) in the file /pub/PGP/rsalicen.txt, and through the world wide web from http://net-dist.mit.edu/pgp.html. In accordance with the terms of that license, PGP 2.6.2 may be used for non-commercial purposes only. Instructions for downloading the PGP 2.6.2 software can also be obtained from net-dist.mit.edu in the pub/PGP/README file. PGP 2.6.2 and RSAREF may be subject to the export control laws of the United States of America as implemented by the United States Department of State Office of Defense Trade Controls. The PGP signature information will be attached to the end of ASSIST bulletins. Reference herein to any specific commercial product, process, or service by trade name, trademark manufacturer, or otherwise, does not constitute or imply its endorsement, recommendation, or favoring by ASSIST. 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If you are not part of the DOD community, please contact your agency's incident response team to report incidents. Your agency's team will coordinate with DOD. 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 by sending email to docserver@first.org with an empty subject line and a message body containing the line: send first-contacts. This document was prepared as an service to the DOD community. Neither the United States Government nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, 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. The opinions of the authors expressed herein do not necessarily state or reflect those of the United States Government, and shall not be used for advertising or product endorsement purposes.