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             AUSCERT External Security Bulletin Redistribution

                        ESB-2007.0027 -- [Solaris]
  Third-party Applications Using GSS-API May Be Vulnerable to Compromise
                              12 January 2007

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

Product:              libgss(3LIB)
Publisher:            Sun Microsystems
Operating System:     Solaris 8, 9 and 10
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2006-6144

Ref:                  AL-2007.0008

Original Bulletin:    
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102772-1

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Sun(sm) Alert Notification

   This is a preliminary Sun Alert notification. Sun provides these
   notices in an effort to allow customers to implement mitigation
   strategies while these issues are being investigated. The information
   contained in these documents is likely to change as more is learned
   about the applicable issues. At the time of publication, workarounds
   and/or final resolutions are not available for the issues. Preliminary
   Sun Alert notifications will be updated as more information becomes
   available.
     * Sun Alert ID: 102772
     * Synopsis: Third-party Applications Using GSS-API May Be Vulnerable
       to Compromise
     * Category: Security
     * Product: Solaris 9 Operating System, Solaris 10 Operating System,
       Solaris 8 Operating System
     * BugIDs: 6510866
     * Avoidance: None
     * State: Preliminary
     * Date Released: 09-Jan-2007
     * Date Closed: 
     * Date Modified: 10-Jan-2007

1. Impact

   Third-party applications which utilize GSS-API and thus link to the
   Generic Security Services library libgss(3LIB), may allow an
   unauthenticated user (local or remote depending on the application)
   the ability to execute arbitrary code with the privileges of the
   application.

   Note: Exploitation of this vulnerability is believed to be difficult.
   No exploit code is known to exist at this time.

   This issue is referenced in the following documents:

   MITKRB5-SA-2006-003 - MIT krb5 Security Advisory 2006-003 at
   http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2006-003-mechglue
   .txt

   CVE-2006-6144 at
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=2006-6144

   CERT VU#831452 at http://www.kb.cert.org/vuls/id/831452

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 8
     * Solaris 9
     * Solaris 10

   x86 Platform
     * Solaris 8
     * Solaris 9
     * Solaris 10

   Notes:
    1. This issue only affects applications which link against the
       Generic Security Services library libgss(3LIB).
    2. No applications shipped by Sun, including kadmind(1M), are
       affected by this issue.

   To determine if an application is linked against libgss(3LIB) the
   following command can be run:
    $ ldd application | grep libgss || echo "application not affected"

   If output similar to the following is seen:
    libgss.so.1 => /usr/lib/libgss.so.1

   then the application links to libgss(3LIB) and may be affected by this
   issue.

3. Symptoms

   There are no reliable symptoms that would indicate this issue has been
   exploited to execute arbitrary code with elevated privileges on a
   system. 

4. Relief/Workaround

   There is no workaround for this issue.

5. Resolution

   A final resolution is pending completion.

Change History

   10-Jan-2007:
     * Updated Impact statement and URL

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