-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =============================================================================== >> CERT-NL, 01-Mar-2000 << >> All CERT-NL information has been moved to http://cert.surfnet.nl. Links << >> to CERT-NL information contained in this advisory are therefore outdated. << >> << >> CERT-NL also has stopped the CERT-CC-Mirror service. Due to this the << >> links to the CERT-CC mirror are obsolete. Visit the CERT-CC site for the << >> complete CERT-CC advisory texts: http://www.cert.org << =============================================================================== =============================================================================== Security Advisory CERT-NL =============================================================================== Author/Source : Niels den Otter Index : S-97-26 Distribution : World Page : 1 Classification: External Version: 1 Subject : SGI: IRIX 5.x and 6.x gmemusage vulnarable Date : 25-apr-97 =============================================================================== By courtesy of Silicon Graphics we received the following information. A security vulnerability has been found with the gmemusage program distributed in the Developer Toolbox versions 6.0 (based on IRIX 5.3) 6.1 (based on IRIX 6.2) and as part of the eoe.sw.perf subsystem for IRIX 6.1 through 6.4. CERT-NL recommends that sites apply the steps outlines in Section 'Solution' ______________________________________________________________________________ Silicon Graphics Inc. Security Advisory Title: IRIX gmemusage program Number: 19970401-01-PX Date: April 21, 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. ______________________________________________________________________________ - - ------------------- - - --- Description --- - - ------------------- A security vulnerability has been found with the gmemusage program distributed in the Developer Toolbox versions 6.0 (based on IRIX 5.3) 6.1 (based on IRIX 6.2) and as part of the eoe.sw.perf subsystem for IRIX 6.1 through 6.4. 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 versions 5.x and 6.x. This issue has been corrected in more recent releases of IRIX and will be corrected in future releases of IRIX. - - -------------- - - --- Impact --- - - -------------- The gmemusage program is used to graphically display a system's memory usage. Developer Toolbox versions 6.0 (based on IRIX 5.3) and 6.1 (based on IRIX 6.2) contain the gmemusage program and source code. With the Developer Toolbox, the gmemusage program can be installed wherever desired and on any IRIX version 5.x through 6.4. With the release of IRIX 6.1, the gmemusage program is part of the eoe.sw.perf subsystem and can be installed on IRIX 6.1, 6.2, 6.3 and 6.4. The eoe.sw.perf is not installed by default. 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 --- - - -------------------------- Although patches are available for this issue, it is realized that there may be situations where installing the patches immediately many not be possible. The steps below can be used to limit the vulnerability by removing the setuid permission. Once this is done, only root will be able to run this program. 1) Become the root user on the system. % /bin/su - Password: # 2) Check to see where the program is located. # find / -type f -name gmemusage -local -print /usr/local/bin/gmemusage 3) Remove the setuid permissions (in the example here gmemusage was found in the directory /usr/local/bin in step 2. For IRIX 6.1-6.4, the eoe.sw.perf gmemusage program is installed in /usr/sbin). # /bin/chmod u-s /usr/local/bin/gmemusage 4) Return to previous level. # exit $ - - ---------------- - - --- Solution --- - - ---------------- **** IRIX 5.x, 6.0, 6.0.1 and 6.1 **** Unfortunately, there are no patches for these operating system versions. To remove this vulnerability, either the steps above should be performed or the system should be upgraded to a newer operating system version. **** IRIX 6.2 **** For the IRIX operating system version IRIX 6.2 an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 1973 and will install on IRIX 6.2 only. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 1973 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.1973 Algorithm #1 (sum -r): 27020 7 README.patch.1973 Algorithm #2 (sum): 18313 7 README.patch.1973 MD5 checksum: 70024AC7413E26CCA7688B66CB0DEFA0 Filename: patchSG0001973 Algorithm #1 (sum -r): 57340 1 patchSG0001973 Algorithm #2 (sum): 29215 1 patchSG0001973 MD5 checksum: 781F5B53C56D331B97C04C72E55E8686 Filename: patchSG0001973.eoe_sw Algorithm #1 (sum -r): 39526 181 patchSG0001973.eoe_sw Algorithm #2 (sum): 17423 181 patchSG0001973.eoe_sw MD5 checksum: 96A5675E5CE330EEFECDDCE11718AFAF Filename: patchSG0001973.idb Algorithm #1 (sum -r): 44824 2 patchSG0001973.idb Algorithm #2 (sum): 48660 2 patchSG0001973.idb MD5 checksum: A190C04BFB90CFFB6985D3C6AC66F42E **** IRIX 6.3 **** For the IRIX operating system version IRIX 6.3 an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 1974 and will install on IRIX 6.3 only. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 1974 can be found in the following directories on the FTP server: ~ftp/Security or ~ftp/Patches/6.3 ##### Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.1974 Algorithm #1 (sum -r): 09813 8 README.patch.1974 Algorithm #2 (sum): 23714 8 README.patch.1974 MD5 checksum: 19DCFF52A7B71B27139B1335990298BF Filename: patchSG0001974 Algorithm #1 (sum -r): 27877 1 patchSG0001974 Algorithm #2 (sum): 28160 1 patchSG0001974 MD5 checksum: A516888F72CA44CE53CF450EAA08DC42 Filename: patchSG0001974.eoe_sw Algorithm #1 (sum -r): 33109 174 patchSG0001974.eoe_sw Algorithm #2 (sum): 61465 174 patchSG0001974.eoe_sw MD5 checksum: 71A6021D4DD481E2CEA255BC300CB43F Filename: patchSG0001974.idb Algorithm #1 (sum -r): 21162 2 patchSG0001974.idb Algorithm #2 (sum): 48367 2 patchSG0001974.idb MD5 checksum: A882C99D6E89E6F329DD88673D14E78B **** IRIX 6.4 **** For the IRIX operating system version IRIX 6.4 an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 1975 and will install on IRIX 6.4 only. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 1975 can be found in the following directories on the FTP server: ~ftp/Security or ~ftp/Patches/6.4 ##### Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.1975 Algorithm #1 (sum -r): 49348 8 README.patch.1975 Algorithm #2 (sum): 26377 8 README.patch.1975 MD5 checksum: F6AFB26D388DC5B7D8C2BD21ADC4C5C5 Filename: patchSG0001975 Algorithm #1 (sum -r): 33550 1 patchSG0001975 Algorithm #2 (sum): 29274 1 patchSG0001975 MD5 checksum: D3BDA738FA0202A344FA536E0775AC46 Filename: patchSG0001975.eoe_sw Algorithm #1 (sum -r): 27139 197 patchSG0001975.eoe_sw Algorithm #2 (sum): 47748 197 patchSG0001975.eoe_sw MD5 checksum: AA8B235BCB52188641160A7A3FE15438 Filename: patchSG0001975.idb Algorithm #1 (sum -r): 63814 2 patchSG0001975.idb Algorithm #2 (sum): 48418 2 patchSG0001975.idb MD5 checksum: 76400549B8FEF0A07FA8117AC7836047 - - ------------------------ - - --- Acknowledgments --- - - ------------------------ Silicon Graphics wishes to thank Serge Pachkovsky for his assistance in this matter. ============================================================================ CERT-NL is the Computer Emergency Response Team for SURFnet customers. 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