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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0835 -- Sun(sm) Alert Notification - Sun Alert ID: 57419 Running Xsun Server in Direct Graphics Access (DGA) Mode May Allow Creation of Temporary Files Insecurely or Allow a "Denial of Service" Attack 04 December 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Xsun(1) Solaris X11 server Publisher: Sun Microsystems Operating System: Solaris 9 Solaris 8 Solaris 7 Solaris 2.6 Impact: Root Compromise Denial of Service Access Required: Existing Account Comment: Original bulletin: http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57419 - --------------------------BEGIN INCLUDED TEXT-------------------- DOCUMENT ID: 57419 SYNOPSIS: Running Xsun Server in Direct Graphics Access (DGA) Mode May Allow Creation of Temporary Files Insecurely or Allow a "Denial of Service" Attack DETAIL DESCRIPTION: Sun(sm) Alert Notification * Sun Alert ID: 57419 * Synopsis: Running Xsun Server in Direct Graphics Access (DGA) Mode May Allow Creation of Temporary Files Insecurely or Allow a "Denial of Service" Attack * Category: Security * Product: Solaris, Xserver * BugIDs: 4680913 * Avoidance: Patch * State: Resolved * Date Released: 02-Dec-2003 * Date Closed: 02-Dec-2003 * Date Modified: 1. Impact On Solaris systems which run the Xsun(1) Solaris X11 server, unprivileged local users may be able to overwrite or create any file on the system due to a security vulnerability involving Xsun(1) and Direct Graphics Access (DGA) mode. Xsun is normally started by "root" user from "dtlogin", and typically has full root privileges. This issue may also allow a local user to crash the Xsun process of any user of a DGA application, a type of "Denial-of-Service". 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 2.6 without patch 105633-64 * Solaris 7 without patch 108376-44 * Solaris 8 without patch 108652-72 * Solaris 9 without patch 112785-25 x86 Platform * Solaris 2.6 without patch 106248-49 * Solaris 7 without patch 108377-39 * Solaris 8 without patch 108653-61 * Solaris 9 without patch 112786-15 These vulnerabilities may be present during the use of any application that uses DGA - including Java applications and applications that use OpenGL (3D accelerated graphics - commonly used in CAD applications). 3. Symptoms There are no predictable symptoms that would indicate the above described issue has been exploited. SOLUTION SUMMARY: 4. Relief/Workaround There is no workaround. Please see the "Resolution" section below. 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 2.6 with patch 105633-64 or later * Solaris 7 with patch 108376-44 or later * Solaris 8 with patch 108652-72 or later * Solaris 9 with patch 112785-25 or later x86 Platform * Solaris 2.6 with patch 106248-49 or later * Solaris 7 with patch 108377-39 or later * Solaris 8 with patch 108653-61 or later * Solaris 9 with patch 112786-15 or later 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 2000-2003 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. 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 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 iQCVAwUBP86RMCh9+71yA2DNAQFBAgP/ai12BBJJ1t4Z009XQpLs9c78rvCHrAr6 XjShaf/AOi7kzwhubbbf+bd6n47loJbWauZeUXGYEays1oH/RbrubAXZyGNX6JPq PWJ4pMwDHV1m1b1+kz/MgwIovk00wdmJXLFahnh04T4CtYesr8TEvpY7qVIG9RZs 4DNFmanoOz8= =fdbs -----END PGP SIGNATURE-----