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-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN IRIX Desktop Permissions Panel Vulnerability May 23, 1996 18:00 GMT Number G-26 ______________________________________________________________________________ PROBLEM: A vulnerability has been discovered in the Desktop Permissions tool on the IRIX 5.3, 6.1, and 6.2 operating systems under the IRIX desktop environment. PLATFORM: SGI platforms running IRIX 5.3, 6.1 or 6.2 operating systems DAMAGE: A user that can start up the IRIX desktop graphical permissions tool could modify permissions on files they don't own (ex: root-owned files) SOLUTION: See the attached SGI bulletin below for more information on patch availability. ______________________________________________________________________________ [ SGI Bulletin Begin] ______________________________________________________________________________ Silicon Graphics Inc. Security Advisory Title: IRIX 5.3, 6.1, 6.2 Desktop Permissions Panel Number: 19960501-01-PX Date: May 21, 1996 ______________________________________________________________________________ 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 will not be liable for any indirect, special, or consequential damages arising from the use of, failure to use or improper use of any of the instructions or information in this Security Advisory. ______________________________________________________________________________ - - -------------- - - --- Impact --- - - -------------- A vulnerability has been discovered in the IRIX 5.3, 6.1, and 6.2 operating systems regarding the permissions tool under the IRIX desktop environment. Normally, this tool is used by users to modify the permissions on their files and files they are privileged for. Under certain conditions, a user may be able to modify the permissions for restricted files. This is SGI Bug #375613. In order to exploit this vulnerability, it is necessary to have access to a local account that can start the graphical permissions tool. Refer to SGI Security Advisory 19951002 and/or system documentation regarding password issues. SGI Engineering has investigated this issue and recommends the following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures be done on ALL SGI systems running IRIX 5.3, 6.1, and 6.2. This issue will be corrected in future releases of IRIX. - - ---------------- - - --- Solution --- - - ---------------- **** IRIX 5.2, 6.0, 6.0.1 **** IRIX operating system versions 5.2, 6.0, and 6.0.1 are not vulnerable. No further action is required. **** 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 1324 and will only install on IRIX 5.3. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 1324 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.1324 Algorithm #1 (sum -r): 36453 8 README.patch.1324 Algorithm #2 (sum): 40114 8 README.patch.1324 MD5 checksum: 028F5506433A1B9F770F1809D741EF98 Filename: patchSG0001324 Algorithm #1 (sum -r): 10430 1 patchSG0001324 Algorithm #2 (sum): 35624 1 patchSG0001324 MD5 checksum: F7C85F5A0870BA4C08DD62F181C81F2E Filename: patchSG0001324.desktop_eoe_sw Algorithm #1 (sum -r): 40704 106 patchSG0001324.desktop_eoe_sw Algorithm #2 (sum): 32497 106 patchSG0001324.desktop_eoe_sw MD5 checksum: EAF31E523E150A29FCF487B1C2802F50 Filename: patchSG0001324.idb Algorithm #1 (sum -r): 62749 2 patchSG0001324.idb Algorithm #2 (sum): 58166 2 patchSG0001324.idb MD5 checksum: 96E559406CA6ABD75ACAA879776D028E **** 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 1325 and will only install on IRIX 6.1. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 1325 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.1325 Algorithm #1 (sum -r): 64561 8 README.patch.1325 Algorithm #2 (sum): 40513 8 README.patch.1325 MD5 checksum: 846AECCEA5658BAFC843999968EC1F19 Filename: patchSG0001325 Algorithm #1 (sum -r): 49679 1 patchSG0001325 Algorithm #2 (sum): 31737 1 patchSG0001325 MD5 checksum: 277DC0914388DB42CAF4F67166B6AD84 Filename: patchSG0001325.desktop_eoe_sw Algorithm #1 (sum -r): 23688 106 patchSG0001325.desktop_eoe_sw Algorithm #2 (sum): 16622 106 patchSG0001325.desktop_eoe_sw MD5 checksum: F9C6CBB8085916980F6FB0E750ED2739 Filename: patchSG0001325.idb Algorithm #1 (sum -r): 44246 2 patchSG0001325.idb Algorithm #2 (sum): 58029 2 patchSG0001325.idb MD5 checksum: 7B5A50A754D4F2BCF43B2FB36402D2B9 **** IRIX 6.2 **** For the IRIX operating system version 6.2, an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 1326 and will only install on IRIX 6.2. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 1326 can be found in the following directories on the FTP server: ~ftp/Security or ~ftp/Patches/6.2 ##### Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.1326 Algorithm #1 (sum -r): 26556 8 README.patch.1326 Algorithm #2 (sum): 40503 8 README.patch.1326 MD5 checksum: 100284465A0FC83BCDA9F51276628C2F Filename: patchSG0001326 Algorithm #1 (sum -r): 09453 1 patchSG0001326 Algorithm #2 (sum): 33991 1 patchSG0001326 MD5 checksum: F22B45302095D815129FCDB52204F947 Filename: patchSG0001326.desktop_eoe_sw Algorithm #1 (sum -r): 33276 105 patchSG0001326.desktop_eoe_sw Algorithm #2 (sum): 65086 105 patchSG0001326.desktop_eoe_sw MD5 checksum: 10798EFCDAB679BC26DE18A007666599 Filename: patchSG0001326.idb Algorithm #1 (sum -r): 34209 2 patchSG0001326.idb Algorithm #2 (sum): 57308 2 patchSG0001326.idb MD5 checksum: 3F7CA27CB954C83ACA7E711B1F29139F - - ------------------------ - - --- Acknowledgments --- - - ------------------------ Silicon Graphics wishes to thank Aaron Mantel of NASA for his assistance in this matter. - - ----------------------------------------- - - --- SGI Security Information/Contacts --- - - ----------------------------------------- Past SGI Advisories and security patches can be obtained via anonymous FTP from sgigate.sgi.com or its mirror, ftp.sgi.com. These security patches and advisories are provided freely to all interested parties. 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. If there are questions about this document, email can be sent to cse-security-alert@csd.sgi.com. Silicon Graphics provides a free security mailing list service. The wiretap service allows interested parties to self-subscribe to receive (via email) all SGI Security Advisories when released. mail external-majordomo@postofc.corp.sgi.com [BODY of "subscribe wiretap YourEmailAddress"] 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. For those customers with WWW capability, the Silicon Graphics Security Headquarters webpages serve as a focal point for security related information for the Silicon Graphics environment. The URL is: http://www.sgi.com/Support/Secur/security.html [ End SGI Bulletin ] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Silicon Graphics 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. 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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 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. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) G-16: SGI rpc.statd Program Security Vulnerabilities G-17: Vulnerabilities in Sample HTTPD CGIs G-18: Digital OSF/1 dxconsole Security Vulnerability G-19: IBM AIX rmail Vulnerability G-20: Vulnerability in NCSA and Apache httpd Servers G-21: Vulnerabilities in PCNFSD Program G-22: rpc.statd Vulnerability G-23: Solaris NIS+ Configuration Vulnerability G-24: FreeBSD Security Vulnerabilities G-25: SUN statd Program Vulnerability RECENT CIAC NOTES ISSUED (Previous Notes available from CIAC) Notes 07 - 3/29/95 A comprehensive review of SATAN Notes 08 - 4/4/95 A Courtney update Notes 09 - 4/24/95 More on the "Good Times" virus urban legend Notes 10 - 6/16/95 PKZ300B Trojan, Logdaemon/FreeBSD, vulnerability in S/Key, EBOLA Virus Hoax, and Caibua Virus Notes 11 - 7/31/95 Virus Update, Hats Off to Administrators, America On-Line Virus Scare, SPI 3.2.2 Released, The Die_Hard Virus Notes 12 - 9/12/95 Securely configuring Public Telnet Services, X Windows, beta release of Merlin, Microsoft Word Macro Viruses, Allegations of Inappropriate Data Collection in Win95 Notes 96-01 - 3/18/96 Java and JavaScript Vulnerabilities, FIRST Conference Announcement, Security and Web Search Engines, Microsoft Word Macro Virus Update -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBMastn7nzJzdsy3QZAQF9mQP7BvqZC1RdYzLZL2YdCHanfSdoCA0n2faf wrW8EbM1sBbM3PJ92uJmhjFPdhyIbtfh96O/FNxZDvNzwiDG+fu+hUDp6T3FRrrY wY93L4unhpYwVK1tdlVBV2FU/Q/yTypIwRXy0i54SHNFTowX3/Mew7h4ZxwP6qx6 nhqHUZDgJBs= =WHfY -----END PGP SIGNATURE-----