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             AUSCERT External Security Bulletin Redistribution

                        ESB-2008.0459 -- [Solaris]
Installing a Kernel patch or certain Solaris Trusted Extensions patches may
         cause desktop login failures for systems configured with
                    Solaris Trusted Extensions enabled
                                5 May 2008

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

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

Product:              Solaris 10 Operating System
Publisher:            Sun Microsystems
Operating System:     Solaris
Impact:               Denial of Service
Access:               Existing Account

Original Bulletin:  
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-237404-1

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Solution Type: Sun Alert
   Solution  237404 :   Installing a Kernel patch or certain Solaris
   Trusted Extensions patches may cause desktop login failures for
   systems configured with Solaris Trusted Extensions enabled          
   Bug ID: 6691776, 6687697

   Product
Solaris 10 Operating System

   Date of Resolved Release: 02-May-2008

   SA Document Body
Installing a Kernel patch or certain Solaris Trusted Extensions patches may 
cause desktop login failures for systems configured with Solaris Trusted
Extensions enabled

1. Impact

   Solaris 10 systems which have Solaris Trusted Extensions enabled which
   install kernel patch 127127-11, 127128-11 or certain Solaris Trusted
   Extensions patches may not be able to complete the login process. The
   desktop environment will fail to start.

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform

   Case 1: Solaris 10 with patch 127127-11 (or later) and without patches
   126363-03, 123611-03, and 126365-07
   Case 2: Solaris 10 with patch 126365-04 (or later) and without patch
   123611-03

   x86 Platform

   Case 1: Solaris 10 with patch 127128-11 (or later) and without patches
   126364-04, 123612-03, and 126366-07
   Case 2: Solaris 10 with patch 126366-04 (or later) and without patch
   123612-03

   Note: Only systems configured with Solaris Trusted Extensions and
   matching one of the configurations of patches described above are
   impacted by this issue.
   To determine if a system is configured with Solaris Trusted
   Extensions, the following command can be run:
$ svcs /system/labeld
STATE    STIME      FMRI
online     07:08:09
svc:/system/labeld:default

   If the system is configured with Solaris Trusted Extensions, the
   "labeld" service will have an instance in the online state.

3. Symptoms

   Installing the affected patches onto vulnerable systems with the
   patches as defined in section 2 above will cause the desktop
   environment to fail to start.
   For patches listed in Contributing Factors for Case 1 (either SPARC or
   x86): when the systems boot to multiuser mode, there will be a message
   indicating the Xserver has failed to start or the system will return a
   blank terminal only.
   For patches listed in Contributing Factors for Case 2 (either SPARC or
   x86): the user is able to commence the login dialog, the "Message Of
   The Day" and the Session Clearance Selection dialog, but after that
   the desktop stays frozen at the initial phase.

4. Workaround

   To avoid this issue, patches must be installed in the following order:
   For Case 1:
   SPARC Platform (for Solaris 10):

    1. 126363-03 or later (SunOS 5.10: X Window System changes - Solaris
       Trusted Extensions)
    2. 123611-03 or later (X11 6.6.2: Trusted Extensions patch)
    3. 126365-07 or later (SunOS 5.10: CDE Desktop changes - Solaris
       Trusted Extensions)
    4. 127127-11 SunOS 5.10: kernel patch

   x86 Platform (for Solaris 10):

    1. 126364-04 or later (SunOS 5.10_x86: X Window System changes -
       Solaris Trusted Extensions)
    2. 123612-03 or later (X11 6.6.2_x86: Trusted Extensions patch)
    3. 126366-07 or later (SunOS 5.10_x86: CDE Desktop changes - Solaris
       Trusted Extensions)
    4. 127128-11 SunOS 5.10_x86: kernel patch

   For Case 2:
   SPARC Platform (for Solaris 10):
    1. 123611-03 or later (X11 6.6.2: Trusted Extensions patch)
    2. 126365-04 or later (SunOS 5.10: CDE Desktop changes - Solaris
       Trusted Extensions

   x86 Platform (for Solaris 10):

    1. 123612-03 or later (X11 6.6.2_x86: Trusted Extensions patch)
    2. 126366-04 or later (SunOS 5.10_x86: CDE Desktop changes - Solaris
       Trusted Extensions)

5. Resolution

   Please see the Workaround section above.
   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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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