From agent99@boytoy.csd.sgi.com Sat Dec 28 17:57:16 1996 Date: Fri, 27 Dec 1996 17:34:07 -0800 From: SGI Security Coordinator To: agent99@sgi.com Subject: SGI Security Advisory 19961203 - netprint Happy Holidays DISTRIBUTION RESTRICTIONS: NONE - FOR PUBLIC RELEASE -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ Silicon Graphics Inc. Security Advisory Title: IRIX netprint Program Security Issues Number: 19961203-01-PX Date: December 27, 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. ______________________________________________________________________________ Silicon Graphics Engineering and Worldwide Customer Service divisions have become aware of a potential security issue in the /usr/lib/print/netprint program found in IRIX 5.3, 6.1 and 6.2, 6.3 and 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 SGI systems running IRIX versions 5.3, 6.1, 6.2, 6.3 and 6.4. This issue will be corrected in future releases of IRIX. - -------------- - --- Impact --- - -------------- The /usr/sbin/print/netprint program is used by the printing system installed on all SGI systems. 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 SGI the opportunity to fully investigate this issue and provide the following information and solutions. - ---------------- - --- 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 remove the vulnerability by removing the printing subsystem. *************** *** WARNING *** *************** Removing the print subsystem will remove all printing capability from the system. Installing the patches below is recommended over removal of the print subsystem. If the print subsystem is removed, at a later time when the patches below are to be installed, the print subsystem will first have to be reinstalled from original IRIX distribution CDs before the patches. 1) Become the root user on the system. % /bin/su - Password: # 2) Remove the vulnerable subsystem. # /usr/sbin/versions -v remove print 3) Return to previous level. # exit $ **** IRIX 3.x **** Silicon Graphics Inc, no longer supports the IRIX 3.x operating system and therefore has no patches or binaries to provide. **** IRIX 4.x **** This version of IRIX is not vulnerable. No action is required. **** IRIX 5.0.x, 5.1.x, 5.2 **** These versions of IRIX are not vulnerable. No action is required. **** IRIX 5.3, 6.1 **** For the IRIX operating system versions 5.3 and 6.1 an inst-able patch has been generated and made available via anonymous FTP and your service/support provider. The patch is number 1685 and will only install on IRIX 5.3 and 6.1. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Patch 1685 can be found in the following directories on the FTP server: ~ftp/Security or ~ftp/Patches/5.3 ~ftp/Patches/6.1 ##### Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.1685 Algorithm #1 (sum -r): 33112 8 README.patch.1685 Algorithm #2 (sum): 26410 8 README.patch.1685 MD5 checksum: 91C8238A36AC03839C910F5E8AA4D62A Filename: patchSG0001685 Algorithm #1 (sum -r): 44784 1 patchSG0001685 Algorithm #2 (sum): 30237 1 patchSG0001685 MD5 checksum: CCB7EB0A9E1AE7464FB0F88FA05C2672 Filename: patchSG0001685.idb Algorithm #1 (sum -r): 25112 1 patchSG0001685.idb Algorithm #2 (sum): 39883 1 patchSG0001685.idb MD5 checksum: D124D5F9E2F363F3500A496D393CD2D3 Filename: patchSG0001685.print_sw Algorithm #1 (sum -r): 13809 21 patchSG0001685.print_sw Algorithm #2 (sum): 44124 21 patchSG0001685.print_sw MD5 checksum: AE6A66F1F7854D37BACDB43773941730 **** IRIX 6.0.x **** IRIX operating system versions 6.0.x were limited release versions. For the IRIX operating system versions 6.0.x an upgrade to 6.1 or later is required first. When the upgrade is completed, then the security patches described in the following sections can be applied depending on the final version of the upgrade. **** IRIX 6.1 **** See the section "**** IRIX 5.3, 6.1 ****" above. **** 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 1686 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 1686 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.1686 Algorithm #1 (sum -r): 52750 8 README.patch.1686 Algorithm #2 (sum): 23718 8 README.patch.1686 MD5 checksum: 54D7A9E3B9838BBD21283B7ACB537940 Filename: patchSG0001686 Algorithm #1 (sum -r): 05122 1 patchSG0001686 Algorithm #2 (sum): 31006 1 patchSG0001686 MD5 checksum: F6E7E5F2E6DDAE1DA3AE103683C92534 Filename: patchSG0001686.idb Algorithm #1 (sum -r): 12185 1 patchSG0001686.idb Algorithm #2 (sum): 39550 1 patchSG0001686.idb MD5 checksum: 16B171C7F5E72405E9831E4D0DC8ECA7 Filename: patchSG0001686.print_sw Algorithm #1 (sum -r): 30083 21 patchSG0001686.print_sw Algorithm #2 (sum): 35675 21 patchSG0001686.print_sw MD5 checksum: B456D8A55AD074B125E0CCD70CADA8A9 **** IRIX 6.3 (Early Access for O2) **** IRIX operating system version 6.3 (Early Access for O2) is a limited release version. An update to "IRIX 6.3 for O2 including R10000" is required for this security issue. This security issue has been addressed in the "IRIX 6.3 for O2 including R10000" distribution which will be distributed to all registered O2 customers with IRIX 6.3 (Early Access for O2). **** IRIX 6.4 S2MP (Origin200, Origin2000, Onyx2) **** IRIX operating system version 6.4 S2MP (Origin200, Origin2000, Onyx2) is a limited release version. A future release of the IRIX 6.4 operating system will be released that will have corrections for this issue. Customers with the limited release will receive the future IRIX 6.4 release when it is available. - ------------------------ - --- Acknowledgments --- - ------------------------ Silicon Graphics wishes to thank Mike Kienenberger and Yuri Volobuev for bringing this issue to Silicon Graphics attention, and then cooperating with Silicon Graphics during the generation of a patch. - ----------------------------------------- - --- 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 additional distributed provided that it is not altered in any fashion, Silicon Graphics Inc. is appropriately credited and the document retains and includes its valid PGP signature. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBMsRpALQ4cFApAP75AQGUNAQAp6cLrZELfjGsK8l4Znqt/LSSV934lzUh +4Z6t8dQfia0Zp+u/pe9GA4NGxhACKf68YvXQ9nuJX6rYwJYceS5fIjhMluCAhMv 5OYUD5zofIZDUOYjmxk1c4syBJgPyV3esR9o2gGaQ1ZcV2WTuS7QinDneo40okRf qKcdhFm6RjE= =wnaE -----END PGP SIGNATURE-----