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             AUSCERT External Security Bulletin Redistribution

                        ESB-2007.0382 -- [Solaris]
 Security Vulnerability in How xscreensaver Interacts With GNOME Assistive
             Technology May Allow Arbitrary Command Execution
                                7 June 2007

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Gnome and xscreensaver
Publisher:            Sun Microsystems
Operating System:     Solaris 10
Impact:               Execute Arbitrary Code/Commands
Access:               Console/Physical
CVE Names:            CVE-2007-3069

Original Bulletin:    
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102834-1

Revision History:  June 7 2007: Added CVE reference
                   June 6 2007: Initial Release

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Sun(sm) Alert Notification
     * Sun Alert ID: 102834
     * Synopsis: A Security Vulnerability in How xscreensaver(1)
       Interacts With GNOME Assistive Technology May Allow Arbitrary
       Command Execution
     * Category: Security
     * Product: Solaris 10 Operating System
     * BugIDs: 6461887
     * Avoidance: Patch, Workaround
     * State: Resolved
     * Date Released: 04-Jun-2007
     * Date Closed: 04-Jun-2007
     * Date Modified: 

1. Impact

   If GNOME Assistive Technology support has been enabled on a system and
   a local user locks the terminal using xscreensaver(1) then it may be
   possible for an individual with physical access to the system to be
   able to execute arbitrary commands on the system with the privileges
   of the user running xscreensaver(1).

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 10 without patch 120094-11

   x86 Platform
     * Solaris 10 without patch 120095-11

   Notes:
    1. Solaris 8 and 9 are not affected by this issue.
    2. This issue only affects GNOME sessions which had the Assistive
       Technologies feature enabled when the session was started. To
       determine if this feature is configured to start at the beginning
       of a GNOME session, go to the 'Launch' menu and select
       'Preferences', then 'Assistive Technology Preferences', and if the
       'Enabled Assistive Technology' box is checked, new GNOME sessions
       are impacted.

3. Symptoms

   There are no predictable symptoms that would indicate the described
   issue has been exploited. 

4. Relief/Workaround

   To work around the described issue until patches can be applied, GNOME
   Assistive Technology can be temporarily disabled by doing the
   following:
    1. Go to: Launch menu -> Preferences -> Assistive Technology
       Preferences
    2. Uncheck the "Enabled Assistive Technology" choice in the dialog
       box
    3. Select the 'Close and Log Out' button to log out of the system and
       then log in again for the changes to take effect.

5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform
     * Solaris 10 with patch 120094-11 or later

   x86 Platform
     * Solaris 10 with patch 120095-11 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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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