A security weakness in Solaris Trusted Extensions Policy configuration ...

1. Impact

A security weakness in Solaris Trusted Extensions Policy configuration
may allow a remote unprivileged user who has authorized or unauthorized
access to the X server, to leverage an additional vulnerability which could
lead to arbitrary code execution as a local privileged or unprivileged user.

2. Contributing Factors

This issue is present in the following releases:

SPARC Platform

• Solaris 10 without patch 126363-08
• OpenSolaris based upon builds snv_37 through snv_125
  

x86 Platform

• Solaris 10 without patch 126364-08
• OpenSolaris based upon builds snv_37 through snv_125
  

Note 1: Solaris 8, Solaris 9 and releases of Solaris 10 prior to
Solaris 10 11/06 do not include Solaris Trusted Extensions and so do
not have this weakness.

Note 2: This issue only impacts Solaris 10 and OpenSolaris systems
which have installed and configured Solaris Trusted Extensions. To
determine if a system is configured with Trusted Extensions, the
following command can be run in the global zone:

    $ svcs /system/labeld
    STATE          STIME      FMRI
    online  10:02:34   svc:/system/labeld:default

If the state is disabled or if the labeld service is not listed,
then the system is not configured to use Trusted Extensions.

3. Symptoms

There are no predictable symptoms that would indicate the described
weakness has been exploited to gain elevated privileges.

4. Workaround

To work around the described issue for the Xorg(1) server, the XTEST extension
may be disabled by adding the following lines to xorg.conf(4) file:

   Section "Extensions"
   Option "XTEST" "disable"
   EndSection

4. Resolution

This issue is addressed in the following releases:

SPARC Platform

• Solaris 10 with patch 126363-08 or later
• OpenSolaris based upon builds snv_126 or later
  

x86 Platform

• Solaris 10 with patch 126364-08 or later
• OpenSolaris based upon builds snv_126 or later
  

For more information on Security Sun Alerts, see Technical Instruction ID 213557:
http://sunsolve.sun.com/search/document.do?assetkey=1-61-213557-1

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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.

This solution has no attachment