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             AUSCERT External Security Bulletin Redistribution

                    ESB-2006.0741 -- [RedHat][Solaris]
         Security Vulnerability With RSA Signature Affects the Sun
                      Secure Global Desktop Software
                             13 December 2006

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

Product:              Sun Secure Global Desktop Software 4.2
Publisher:            Sun Microsystems
Operating System:     Solaris
                      Red Hat Enterprise Linux AS/ES/WS 4
                      Red Hat Enterprise Linux AS/ES/WS 3
                      Red Hat Enterprise Linux AS/ES/WS 2.1
Impact:               Inappropriate Access
                      Provide Misleading Information
Access:               Existing Account
CVE Names:            CVE-2006-4339

Ref:                  ESB-2006.0728

Revision History:  December 13 2006: Issue is now resolved.
                   October   9 2006: Initial Release

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Sun(sm) Alert Notification
     * Sun Alert ID: 102657
     * Synopsis: Security Vulnerability With RSA Signature Affects the
       Sun Secure Global Desktop Software
     * Category: Security
     * Product: Sun Secure Global Desktop Software 4.2
     * BugIDs: 6469123
     * Avoidance: Upgrade
     * State: Resolved
     * Date Released: 06-Oct-2006, 07-Dec-2006
     * Date Closed: 07-Dec-2006
     * Date Modified: 07-Dec-2006

1. Impact

   Sun Secure Global Desktop (SSGD) software 4.2 is impacted by an RSA
   signature forgery vulnerability. This vulnerability may allow an
   untrusted server to present a forged identity to clients connecting to
   that server when secure connections are in use.

   This vulnerability may also affect SSGD servers which are configured
   to use web server authentication and client certificates. Under these
   circumstances, it may be possible for a local or remote unprivileged
   user to forge a valid identity and log in to an SSGD server, allowing
   unauthorized access to the applications available for that identity.

   This issue is also described in the following documents:

   CERT VU#845620 at http://www.kb.cert.org/vuls/id/845620

   CVE-2006-4339 at
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4339

   Note: The issue described in this Sun Alert is specific to Sun Secure
   Global Desktop Software. Multiple Sun products are affected by this
   issue; for more details please see Sun Alert 102648 at
   http://sunsolve.sun.com/search/document.do?assetkey=1-26-102648-1

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Sun Secure Global Desktop Software 4.2 (for Solaris 8, 9, and 10)

   x86 Platform
     * Sun Secure Global Desktop Software 4.2 (for Solaris 10)

   Linux Platform
     * Sun Secure Global Desktop Software 4.2

   Note: Sun Secure Global Desktop Software 4.2 is not supported on
   Solaris 8 or Solaris 9 for the x86 platform.

   To determine the version of the Sun Secure Global Desktop Software
   running on a system, the following command can be executed on the Sun
   Secure Global Desktop server:
    $ <INSTALL_DIR>/bin/tarantella version
    Sun Secure Global Desktop Software for SPARC Solaris 2.8+ (4.20.983)
    Architecture code: spso0510
    This host: SunOS <SERVER NAME> 5.10 Generic_118822-25 sun4v sparc SUNW,Sun-
Fire-T2000

3. Symptoms

   There are no predictable symptoms that would indicate the described
   issue has been exploited to gain unauthorized access to a system. 

4. Relief/Workaround

   There is no workaround for this issue. Please see the Resolution
   section below.

5. Resolution

   This issue is addressed in the following release (for all platforms:
   SPARC, x86 and Linux):
     * Sun Secure Global Desktop Software 4.3

   The upgrade is available for download at:

   http://www.sun.com/download/products.xml?id=451d9816

Change History

   07-Dec-2006:
     * Updated Resolution section
     * State: Resolved

   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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