copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
 
Search this site

 
On this site

 > HOME
 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login





 

ESB-2009.1455.2 - UPDATE [Solaris][OpenSolaris] Solaris Trusted Extensions: Execute arbitrary code/commands - Remote/unauthenticated

Date: 03 November 2009
Related Files: ESB-2009.1455  

Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2009.1455.2
           A Security Weakness in Solaris Trusted Extensions May
                      Facilitate Privilege Escalation
                              3 November 2009

===========================================================================

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

Product:           Solaris Trusted Extensions
Publisher:         Sun Microsystems
Operating System:  Solaris
                   OpenSolaris
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2009-3839  

Original Bulletin: 
   http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-270969-1

Revision History:  November  3 2009: Added CVE Reference
                   October  28 2009: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

A Security Weakness in Solaris Trusted Extensions May Facilitate
Privilege Escalation
  _________________________________________________________________

Category : Security
Release Phase : Resolved
Bug Id : 6858547
Product : Solaris 10 Operating System
OpenSolaris
Date of Resolved Release : 26-Oct-2009

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

- --------------------------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.

NOTE: Third Party Rights
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

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

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

iD8DBQFK763lNVH5XJJInbgRAnTiAJ4vMxMc7Kafnbsz43OyOTMATwctNACeK/Wt
30RShqmRF1Wq/PrXVyWlF9c=
=uS7a
-----END PGP SIGNATURE-----