DISTRIBUTION RESTRICTIONS - NONE - FOR PUBLIC RELEASE -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ Silicon Graphics Inc. Security Advisory Title: startmidi/stopmidi, datman/cdman, cdplayer Vulnerabilities Title: AUSCERT AA-96.11, AUSCERT AA-96.20 and AUSCERT AA-97.05 Number: 19980301-01-PX Date: March 11, 1998 ______________________________________________________________________________ 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 Silicon Graphics 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. ______________________________________________________________________________ - ----------------------- - --- Issue Specifics --- - ----------------------- Under normal operation, the IRIS Digital Media Execution Environment and related subsystems provide software to support Silicon Graphic's Multimedia (audio, MIDI, video, compression and movie) hardware. Unfortunately, several buffer overruns which could allow arbitrary commands to be run as the privileged user root have been discovered in the following Digital Media Tools: startmidi/stopmidi(1), datman/cdman(1), cdplayer(1) and the CDROM Confidence Test program. Respectfully, the startmidi/stopmidi(1) programs control the MIDI daemon, the datman/cdman(1) programs control audio CD and DAT tape operations, the cdplayer(1) program plays audio CDs on a CD-ROM drive, and the CDROM Confidence Test tool verifies the CDROM is working properly. 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. This issue will be corrected in future releases of IRIX. - -------------- - --- Impact --- - -------------- The IRIS Digital Media Execution software and related subsystems and are loaded by default on all IRIX systems. The Digital Media Tools on IRIX 5.X and IRIX 6.X are vulnerable to these buffer overflows. With a local account, these buffer overrun vulnerabilities can be exploited locally and remotely. These buffer overrun vulnerabilities can be utilized to execute commands with root privileges. These vulnerabilities has been publically discussed in Usenet newsgroups and mailing lists and also reported in AUSCERT AA-96.11, AA-96.20 and AA-97.05 - -------------------------- - --- Temporary Solution --- - -------------------------- Although patches are available for this issue, it is realized that there may be situations where installing the patches immediately may not be possible. The steps below can be used to remove the vulnerabilities by changing the permissions of the vulnerable programs. 1) Become the root user on the system. % /bin/su - Password: # 2) Change the permissions on the vulnerable programs. On All IRIX Releases # /bin/chmod 500 /usr/sbin/datman # /bin/chmod 500 /usr/sbin/Confidence/cdrom On IRIX 5.3 Only # /bin/chmod 500 /usr/sbin/startmidi On IRIX 5.3 and IRIX 6.2 # /bin/chmod 500 /usr/bin/X11/cdplayer On IRIX 6.3 and IRIX 6.4 # /bin/chmod 500 /usr/sbin/datplayer # /bin/chmod 500 /usr/bin/X11/cdheadphone ************ *** NOTE *** ************ Removing the permissions from the vulnerable programs will prevent non-root users from using the vulnerable programs. 3) Return to previous level. # exit $ - ---------------- - --- Solution --- - ---------------- OS Version Vulnerable? Patch # Other Actions ---------- ----------- ------- ------------- IRIX 3.x no IRIX 4.x no IRIX 5.0.x yes not avail Note 1 IRIX 5.1.x yes not avail Note 1 IRIX 5.2 yes not avail Note 1 IRIX 5.3 yes 2563 IRIX 6.0.x yes not avail Note 1 IRIX 6.1 yes not avail Note 1 IRIX 6.2 yes 2564 IRIX 6.3 yes 2565 IRIX 6.4 yes 2291 NOTES 1) upgrade operating system or see "Temporary Solution" section. Patches are available via anonymous FTP and your service/support provider. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Security information and patches can be found in the ~ftp/security and ~ftp/patches directories, respectfully. ##### Patch File Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.2563 Algorithm #1 (sum -r): 64246 9 README.patch.2563 Algorithm #2 (sum): 3508 9 README.patch.2563 MD5 checksum: 38FE820C54053677D87F66EC1E14CD38 Filename: patchSG0002563 Algorithm #1 (sum -r): 33633 3 patchSG0002563 Algorithm #2 (sum): 44339 3 patchSG0002563 MD5 checksum: 23E2FD7D5C7762F4D2B7DB43D2F4DC0B Filename: patchSG0002563.desktop_eoe_sw Algorithm #1 (sum -r): 33441 97 patchSG0002563.desktop_eoe_sw Algorithm #2 (sum): 19666 97 patchSG0002563.desktop_eoe_sw MD5 checksum: ED3403B0CFF39C22236493F6F27D35EA Filename: patchSG0002563.dmedia_eoe_sw Algorithm #1 (sum -r): 15897 12 patchSG0002563.dmedia_eoe_sw Algorithm #2 (sum): 21619 12 patchSG0002563.dmedia_eoe_sw MD5 checksum: 8FA8DBB16A50BADC6C30539FB4F781A5 Filename: patchSG0002563.dmedia_tools_sw Algorithm #1 (sum -r): 32937 782 patchSG0002563.dmedia_tools_sw Algorithm #2 (sum): 26674 782 patchSG0002563.dmedia_tools_sw MD5 checksum: 4B7568DE78B07ED50EE41C6D0804030A Filename: patchSG0002563.eoe2_sw Algorithm #1 (sum -r): 58928 139 patchSG0002563.eoe2_sw Algorithm #2 (sum): 64284 139 patchSG0002563.eoe2_sw MD5 checksum: 0E8DC3A5F5716440E065F7EA45D663B9 Filename: patchSG0002563.idb Algorithm #1 (sum -r): 57817 2 patchSG0002563.idb Algorithm #2 (sum): 17902 2 patchSG0002563.idb MD5 checksum: 962FB5E6BA16F8AB0F8B6A016D59184E Filename: README.patch.2564 Algorithm #1 (sum -r): 34028 9 README.patch.2564 Algorithm #2 (sum): 242 9 README.patch.2564 MD5 checksum: E4674E474941BE71057588CACDE10DDB Filename: patchSG0002564 Algorithm #1 (sum -r): 28664 5 patchSG0002564 Algorithm #2 (sum): 53837 5 patchSG0002564 MD5 checksum: D095BCF415F25208A3E7A6DF632B1D68 Filename: patchSG0002564.desktop_eoe_sw Algorithm #1 (sum -r): 15389 595 patchSG0002564.desktop_eoe_sw Algorithm #2 (sum): 21291 595 patchSG0002564.desktop_eoe_sw MD5 checksum: 159A78FE9A7D9ECF30AC0467CCAADF6C Filename: patchSG0002564.dmedia_eoe_sw Algorithm #1 (sum -r): 46712 750 patchSG0002564.dmedia_eoe_sw Algorithm #2 (sum): 30765 750 patchSG0002564.dmedia_eoe_sw MD5 checksum: AB34E9C0C1865778ADE576D2E2AFF75A Filename: patchSG0002564.eoe_sw Algorithm #1 (sum -r): 40819 252 patchSG0002564.eoe_sw Algorithm #2 (sum): 57504 252 patchSG0002564.eoe_sw MD5 checksum: C00F91E8CCC468693D6B0B500E7D6C03 Filename: patchSG0002564.idb Algorithm #1 (sum -r): 64183 8 patchSG0002564.idb Algorithm #2 (sum): 16316 8 patchSG0002564.idb MD5 checksum: EF9810A1C10E06CDE22B2BB88202D3DD Filename: README.patch.2565 Algorithm #1 (sum -r): 31164 14 README.patch.2565 Algorithm #2 (sum): 34494 14 README.patch.2565 MD5 checksum: FC8A8F31517252DBE11DF961E60E1A0D Filename: patchSG0002565 Algorithm #1 (sum -r): 48368 7 patchSG0002565 Algorithm #2 (sum): 52893 7 patchSG0002565 MD5 checksum: 40B36A34F28FFBE7E356D1FA581DE39E Filename: patchSG0002565.desktop_eoe_sw Algorithm #1 (sum -r): 56716 46 patchSG0002565.desktop_eoe_sw Algorithm #2 (sum): 1798 46 patchSG0002565.desktop_eoe_sw MD5 checksum: C0975BFFCCA459F4E4DD65DDBC1EFAFC Filename: patchSG0002565.dmedia_eoe_sw Algorithm #1 (sum -r): 27513 4688 patchSG0002565.dmedia_eoe_sw Algorithm #2 (sum): 35889 4688 patchSG0002565.dmedia_eoe_sw MD5 checksum: DD8F49EDD0226A4CF673CA5E2397DE3A Filename: patchSG0002565.eoe_sw Algorithm #1 (sum -r): 39776 228 patchSG0002565.eoe_sw Algorithm #2 (sum): 27743 228 patchSG0002565.eoe_sw MD5 checksum: FF3A4E5544CB78AEBACF3DD40914BB1A Filename: patchSG0002565.idb Algorithm #1 (sum -r): 05831 9 patchSG0002565.idb Algorithm #2 (sum): 41323 9 patchSG0002565.idb MD5 checksum: 85C7411466FF2A833781C4DC6B7AD468 Filename: patchSG0002565.sysadmdesktop_sw Algorithm #1 (sum -r): 05151 24 patchSG0002565.sysadmdesktop_sw Algorithm #2 (sum): 53754 24 patchSG0002565.sysadmdesktop_sw MD5 checksum: 139B633A63728FF57FF6A902747299C0 Filename: README.patch.2291 Algorithm #1 (sum -r): 40374 33 README.patch.2291 Algorithm #2 (sum): 40054 33 README.patch.2291 MD5 checksum: F69F5CC8EF70F444979050DF2D0C62B9 Filename: patchSG0002291 Algorithm #1 (sum -r): 45762 16 patchSG0002291 Algorithm #2 (sum): 15350 16 patchSG0002291 MD5 checksum: A9D31B4EADE732390C0FEC20FD8E2D44 Filename: patchSG0002291.desktop_eoe_sw Algorithm #1 (sum -r): 00837 48 patchSG0002291.desktop_eoe_sw Algorithm #2 (sum): 14894 48 patchSG0002291.desktop_eoe_sw MD5 checksum: 9AF97B0870ECF0AA2C55BD0E7F229BE0 Filename: patchSG0002291.dmedia_dev_man Algorithm #1 (sum -r): 26486 51 patchSG0002291.dmedia_dev_man Algorithm #2 (sum): 26722 51 patchSG0002291.dmedia_dev_man MD5 checksum: 700D287F5A02173EFD68B34E7434AF68 Filename: patchSG0002291.dmedia_dev_src Algorithm #1 (sum -r): 32452 201 patchSG0002291.dmedia_dev_src Algorithm #2 (sum): 62658 201 patchSG0002291.dmedia_dev_src MD5 checksum: DC371E55D70A262B06BB9E42CACA44C5 Filename: patchSG0002291.dmedia_dev_sw Algorithm #1 (sum -r): 64921 4977 patchSG0002291.dmedia_dev_sw Algorithm #2 (sum): 39316 4977 patchSG0002291.dmedia_dev_sw MD5 checksum: E7C89E694135D13C4C5A2CA8CF984978 Filename: patchSG0002291.dmedia_eoe_man Algorithm #1 (sum -r): 49711 154 patchSG0002291.dmedia_eoe_man Algorithm #2 (sum): 24512 154 patchSG0002291.dmedia_eoe_man MD5 checksum: A9C551DA77F45B0D12549B3DAC9AD6C3 Filename: patchSG0002291.dmedia_eoe_sw Algorithm #1 (sum -r): 05209 12929 patchSG0002291.dmedia_eoe_sw Algorithm #2 (sum): 28248 12929 patchSG0002291.dmedia_eoe_sw MD5 checksum: D4FD84A8D6796786086756693B6D5EBB Filename: patchSG0002291.eoe_sw Algorithm #1 (sum -r): 09998 227 patchSG0002291.eoe_sw Algorithm #2 (sum): 22889 227 patchSG0002291.eoe_sw MD5 checksum: 25A84D429953AE8AD5E74890173F0EEE Filename: patchSG0002291.idb Algorithm #1 (sum -r): 21588 43 patchSG0002291.idb Algorithm #2 (sum): 52171 43 patchSG0002291.idb MD5 checksum: 5A0EF5DC304866D2C8FFB26F8A762868 Filename: patchSG0002291.sysadmdesktop_sw Algorithm #1 (sum -r): 13267 27 patchSG0002291.sysadmdesktop_sw Algorithm #2 (sum): 54771 27 patchSG0002291.sysadmdesktop_sw MD5 checksum: A941345B943078F98B77E64AC2E86618 - ------------------------ - --- Acknowledgments --- - ------------------------ Silicon Graphics wishes to thank AUSCERT and the Internet community for their assistance in this matter. - ----------------------------------------------------------- - --- Silicon Graphics Inc. Security Information/Contacts --- - ----------------------------------------------------------- If there are questions about this document, email can be sent to cse-security-alertat_private ------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/security/security.html. For issues with the patches on the FTP sites, email can be sent to cse-security-alertat_private 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/security/wiretap.html) or by sending email to SGI as outlined below. % mail wiretap-requestat_private subscribe wiretap <YourEmailAddress> end ^d In the example above, <YourEmailAddress> 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/security/security.html. ------oOo------ For reporting *NEW* SGI security issues, email can be sent to security-alertat_private 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 redistributed provided that it is not altered in any way, Silicon Graphics is appropriately credited and the document retains and includes its valid PGP signature. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCUAwUBNQbVn7Q4cFApAP75AQFO7QP45WmuwS1mdGdPYVyK4HebfYfQ8vqMdGS/ C9xIJxzmxn2Zn2zFBshLNf8tKpWmhwstocYG0b+MsWNx3l89986ByMJgj9r8FGfU vDKLOwmn+DLwCWyNShy8XQoIbNYPuj7GOFRDgvJyYz6PeYw4ZtUG0SLHDBz4s0c8 4/f6futA5g== =WUB4 -----END PGP SIGNATURE-----
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