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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2006.0320 -- [Solaris] Security Vulnerability in the Xorg(1) Version of the Render Extension 25 May 2006 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Xorg(1) Publisher: Sun Microsystems Operating System: Solaris 10 Impact: Root Compromise Access: Existing Account CVE Names: CVE-2006-1526 Ref: ESB-2006.0312 Revision History: May 25 2006: Updates to Contributing Factors, Relief/Workaround,and Resolution sections May 8 2006: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Sun(sm) Alert Notification * Sun Alert ID: 102339 * Synopsis: Security Vulnerability in the Xorg(1) Version of the Render Extension * Category: Security * Product: Solaris 10 Operating System * BugIDs: 6416841 * Avoidance: Workaround, Patch * State: Resolved * Date Released: 04-May-2006, 17-May-2006 * Date Closed: 17-May-2006 * Date Modified: 17-May-2006 1. Impact The Xorg X server (see Xorg(1)) is one of the X Window System display servers available on the Solaris x86 platform. A buffer overflow in the X Render extension may allow an unprivileged local or remote user who is a client of the Xorg X server the ability to execute arbitrary code with the privileges of the Xorg server. The Xorg X server runs with root privileges on Solaris. This issue is described in the following documents: * CVE-2006-1526 at: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1526 * http://lists.freedesktop.org/archives/xorg/2006-May/015136.html 2. Contributing Factors This issue can occur in the following release: x86 Platform * Solaris 10 without patch 118966-20 Note: Solaris 8 and Solaris 9 are not affected by this issue. Solaris 10 on the SPARC platform is also not affected. The described issue only occurs on systems with the SUNWxorg packages installed. To determine if the SUNWxorg packages are installed on the system, the following command can be used: pkginfo SUNWxorg-server 3. Symptoms There are no predictable symptoms that would show the described issue has been exploited. 4. Relief/Workaround To work around the described issue, disable the Render extension by putting the following in the xorg.conf(4) file: Section "Extensions" Option "RENDER" "disable" EndSection Note: After applying this workaround, applications requiring the Render extension may not run. 5. Resolution This issue is addressed in the following release: x86 Platform * Solaris 10 with patch 118966-20 or later Change History 17-May-2006: * State: Resolved * Updated Contributing Factors, Relief/Workaround, and Resolution sections This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements. Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRHUU1Sh9+71yA2DNAQJJAQP/UROu3DY24UjP8gZlXQZ/gzgmgNIoYhwd DJRMu7mG17wehyfiaFRuK/gQ6Tl+f0uDOrCQ/8My3dKGe0KrZ/onIbisDOXgIu1X Jsb4o+lqHWkw+WskB9DLgOH+nE4FUz4NdyFiCUB0WsRbl4Bp9P3uHx2K5IIqhKWR JbNdbmjVQ/Y= =dLSa -----END PGP SIGNATURE-----