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                                 CERT-Renater

                      Note d'Information No. 2003/VULN380
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DATE                      : 04/12/2003

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Solaris.
                            
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   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.

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