Operating System:

Published:

04 December 2003

Protect yourself against future threats.

-----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-----