-----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 to CERT-NL information contained in this advisory are therefore outdated.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 : Gert Meijerink Index : S-97-35 Distribution : World Page : 1 Classification: External Version: 1 Subject : IRIX runpriv Security Issue Date : 21-mei-97 =============================================================================== By courtesy of Silicon Graphics we received information on a vulnerability in the IRIX runpriv Program. CERT-NL recommends sites apply the steps outlines in Section 'Solution' or 'Temporary Fix'. ============================================================================== ______________________________________________________________________________ Silicon Graphics Inc. Security Advisory Title: Program runpriv Security Issue Number: 19970503-01-PX Date: May 14, 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 --- - - ------------------ The /usr/sysadm/bin/runpriv program is used by the System Desktop to allow unprivileged users to run selected privileged commands. Silicon Graphics has been informed of a potential security vulnerability involving this program. 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 SGI systems running IRIX versions 6.3 and 6.4. This issue will be corrected in future releases of IRIX. - - -------------- - - --- Impact --- - - -------------- The /usr/sysadm/bin/runpriv program is part of the Indigo Magic System Administration subsystem of IRIX 6.3 and 6.4. Although other IRIX versions will have similar Desktop System Administration subsystems, only the IRIX 6.3 and 6.4 subsystems have the runpriv program. On IRIX 6.3 and 6.4, the Indigo Magic System Administration subsystem is installed by default. A potential security vulnerability has been found that can result in root privileges being obtained. A local account is required in order to exploit this vulnerability both locally and remotely. Publicity of this vulnerability has been limited and has afforded Silicon Graphics Inc. the opportunity to fully investigate this issue and provide the following information and solutions. - - --------------------- - - --- Temporary Fix --- - - --------------------- 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 remove the vulnerability by turning off the privileges capability. *************** *** WARNING *** *************** Turning off the privileges capability will disable unprivileged users using the visual administration tools. Only the root user will be able to run these programs. 1) Become the root user on the system. % /bin/su - Password: # 2) Turn off the privileges capability. # chkconfig privileges off 3) Return to previous level. # exit $ - - ---------------- - - --- Solution --- - - ---------------- **** IRIX 3.x and 4.x **** Silicon Graphics Inc, no longer supports the IRIX 3.x and 4.x operating systems and therefore has no patches to provide. **** IRIX 5.x, 6.0, 6.0.1, 6.1, and 6.2 **** These versions of IRIX do not have the /usr/sysadm/bin/runpriv program and are therefore not vulnerable. No further action is required for these versions. **** IRIX 6.3 **** For the IRIX operating system version 6.3 an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 2077 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 2077 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.2077 Algorithm #1 (sum -r): 34622 8 README.patch.2077 Algorithm #2 (sum): 22197 8 README.patch.2077 MD5 checksum: B3DFE9BAE87AFF4153A1CF3BFAD7B522 Filename: patchSG0002077 Algorithm #1 (sum -r): 53668 1 patchSG0002077 Algorithm #2 (sum): 32550 1 patchSG0002077 MD5 checksum: EC35AE80FB77125305EA8BE98CC15C98 Filename: patchSG0002077.idb Algorithm #1 (sum -r): 01148 1 patchSG0002077.idb Algorithm #2 (sum): 40537 1 patchSG0002077.idb MD5 checksum: A23D679D06167F20DE125486592BABC9 Filename: patchSG0002077.sysadmdesktop_sw Algorithm #1 (sum -r): 10875 15 patchSG0002077.sysadmdesktop_sw Algorithm #2 (sum): 46398 15 patchSG0002077.sysadmdesktop_sw MD5 checksum: 8B03D59C0E3A9748B90FED6C5994A739 **** IRIX 6.4 **** For the IRIX operating system version 6.4 an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 2078 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 2078 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.2078 Algorithm #1 (sum -r): 24207 8 README.patch.2078 Algorithm #2 (sum): 24278 8 README.patch.2078 MD5 checksum: 32AD0F5DB530D6E31315C31C76B45DD3 Filename: patchSG0002078 Algorithm #1 (sum -r): 57740 1 patchSG0002078 Algorithm #2 (sum): 33268 1 patchSG0002078 MD5 checksum: C9AEEF6551A7280B3A7695B63B40B37C Filename: patchSG0002078.idb Algorithm #1 (sum -r): 49797 1 patchSG0002078.idb Algorithm #2 (sum): 40655 1 patchSG0002078.idb MD5 checksum: 18FE323A8FB7DAC71DD623B5DDA2B6E7 Filename: patchSG0002078.sysadmdesktop_sw Algorithm #1 (sum -r): 06501 15 patchSG0002078.sysadmdesktop_sw Algorithm #2 (sum): 28499 15 patchSG0002078.sysadmdesktop_sw MD5 checksum: 3020CBAE24B094CECB6C6C5FD73D0E97 - - ----------------------- - - --- Acknowledgments --- - - ----------------------- Silicon Graphics wishes to thank Joe Bester and Quay Ly of Harvey Mudd College for bringing this issue to Silicon Graphics attention, and then cooperating with Silicon Graphics during the generation of patches. ============================================================================== CERT-NL is the Computer Emergency Response Team for SURFnet customers. 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