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Fwd: Sun Security Bulletin #00192
From: blb () POBOX COM (Bryan Blackburn)
Date: Wed, 29 Dec 1999 13:10:50 -0700


----- Forwarded message from Sun Security Coordination Team <secure () sunsc eng sun com> -----

Date: Wed, 29 Dec 1999 11:35:49 -0800 (PST)
From: Sun Security Coordination Team <secure () sunsc eng sun com>
To: CWS () sunsc eng sun com
Subject: Sun Security Bulletin #00192

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________________________________________________________________________________
                    Sun Microsystems, Inc. Security Bulletin
                 
Bulletin Number:        #00192
Date:                   December 29, 1999
Cross-Ref:              CERT CA-99-11
Title:                  CDE and OpenWindows
________________________________________________________________________________

The information contained in this Security Bulletin is provided "AS IS."
Sun makes no warranties of any kind whatsoever with respect to the information
contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS,
REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF NON-INFRINGEMENT OR
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE
HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW.

IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE,
PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL
OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY
ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN
THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.

If any of the above provisions are held to be in violation of applicable law,
void, or unenforceable in any jurisdiction, then such provisions are waived
to the extent necessary for this disclaimer to be otherwise enforceable in
such jurisdiction.
________________________________________________________________________________

1.  Bulletin Topics

    Sun announces the release of patches for Solaris(tm) 7, 2.6, 2.5.1, 2.5,
    2.4, 2.3 (SunOS(tm) 5.7, 5.6, 5.5.1, 5.5, 5.4, 5.3), and SunOS 4.1.4,
    and 4.1.3_U1 which relate to various vulnerabilities in CDE and
    OpenWindows.

    Sun recommends that you install the patches listed in section 4
    immediately on systems running SunOS 5.7, 5.6, 5.5.1, 5.5, 5.4, 5.3,
    4.1.4, and 4.1.3_U1.

2.  Who is Affected
        
    Vulnerable:     SunOS 5.7, 5.7_x86, 5.6, 5.6_x86, 5.5.1, 5.5, 5.4, 5.3,
                              4.1.4, and 4.1.3_U1.

    Not vulnerable: All other supported versions of SunOS.

3.  Understanding the Vulnerabilities

    The following vulnerabilities have been identified.

3.1 ToolTalk ttsession default authentication mechanism insecure

    The ToolTalk messaging utility, ttsession, allows independent
    applications to communicate without having direct knowledge of
    each other. The ttsession daemon is started automatically by
    any program that needs to send or receive a ToolTalk message. It uses
    AUTH_UNIX authentication by default. A local or remote attacker may
    manipulate certain environment variables (which are used by ttsession
    to determine how client messages are handled) to execute arbitrary
    commands with the privileges of the running ttsession.

3.2 CDE dtspcd relies on file-system based authentication

    The CDE desktop subprocess control program (dtspcd) is a network
    daemon that accepts requests from clients to execute commands and
    launch applications remotely. By manipulating predictable files used
    for authentication, a local attacker may exploit this vulnerability
    to execute arbitrary commands and gain root access.

3.3 CDE dtaction buffer overflow

    The dtaction utility allows applications or shell scripts, which are
    otherwise not connected into the CDE user environment, to request
    CDE actions be performed. A buffer overflow vulnerability has been
    discovered which may be exploited by a local attacker to execute
    arbitrary instructions and gain root access.

3.4 CDE ToolTalk shared library buffer overflow in TT_SESSION

    A buffer overflow vulnerability has been discovered in the ToolTalk
    shared library which may be exploited by a local attacker to execute
    arbitrary instructions and gain root access.

4.  List of Patches

    Patches for vulnerability described in section 3.1

      SunOS version     Patch ID        
      _____________     _________

      5.7               107893-04
      5.7_x86           107894-04               
      5.6               105802-11       
      5.6_x86           105803-13
      5.5.1             104489-10
      5.5.1_x86         105496-08
      5.5               104428-08
      5.5_x86           105495-06
      5.4               102734-05
                            108636-01 (see Note 1)
      5.4_x86           108641-01
                            108637-01 (see Note 1)
      5.3               Patch will be available in 2 weeks
      4.1.4, 4.1.3_U1   Patch will be available in 2 weeks
                            
      Note 1: Install patch if CDE 1.0.2 or 1.0.1 is installed.

    Patches for vulnerability described in section 3.2
              
      CDE version       SunOS version                   Patch ID        
      ___________       _____________                   _________

      1.3               5.7                             108221-01
      1.3_x86           5.7_x86                         108222-01
      1.2               5.6                             108199-01
      1.2_x86           5.6_x86                         108200-01
      1.0.2             5.5.1, 5.5, 5.4                 108205-01
      1.0.2_x86         5.5.1_x86, 5.5_x86, 5.4_x86     108206-01
      1.0.1             5.5, 5.4                        108252-01
      1.0.1_x86         5.5_x86, 5.4_x86                108253-01

    Patches for vulnerability described in section 3.3

      CDE version       SunOS version                   Patch ID        
      ___________       _____________                   _________

      1.3               5.7                             108219-01
      1.3_x86           5.7_x86                         108220-01
      1.2               5.6                             108201-01
      1.2_x86           5.6_x86                         108202-01
      1.0.2             5.5.1, 5.5, 5.4                 108289-02
      1.0.2_x86         5.5.1_x86, 5.5_x86, 5.4_x86     108290-03
      1.0.1             5.5, 5.4                        108254-01
      1.0.1_x86         5.5_x86, 5.4_x86                108255-01

    Patches for vulnerability described in section 3.4

      SunOS version     Patch ID        
      _____________     _________

      5.7               107893-04
      5.7_x86           107894-04
      5.6               105802-11       
      5.6_x86           105803-13
      5.5.1             104489-10
      5.5.1_x86         105496-08
      5.5               104428-08
      5.5_x86           105495-06
      5.4               102734-05
                              108636-01 (see Note 2)
      5.4_x86           108641-01
                              108637-01 (see Note 2)
      5.3               101495-04
      4.1.4, 4.1.3_U1   100626-10

      Note 2: Install patch if CDE 1.0.2 or 1.0.1 is installed.

_______________________________________________________________________________
APPENDICES

A.  Patches listed in this bulletin are available to all Sun customers at:

    http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/patch-license&nav=pub-patches

B.  Checksums for the patches listed in this bulletin are available at:

    ftp://sunsolve.sun.com/pub/patches/CHECKSUMS

C.  Sun security bulletins are available at:

    http://sunsolve.sun.com/pub-cgi/secBulletin.pl
        
D.  Sun Security Coordination Team's PGP key is available at:

    http://sunsolve.sun.com/pgpkey.txt
                                        
E.  To report or inquire about a security problem with Sun software, contact
    one or more of the following:

        - Your local Sun Solution Center
        - Your representative computer security response team, such as CERT
        - Sun Security Coordination Team. Send email to:
        
                     security-alert () sun com

F.  To receive information or subscribe to our CWS (Customer Warning System)
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________________________________________________________________________________

Copyright 1999 Sun Microsystems, Inc. All rights reserved. Sun,
Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries. This
Security Bulletin may be reproduced and distributed, provided that this
Security Bulletin is not modified in any way and is attributed to
Sun Microsystems, Inc. and provided that such reproduction and distribution
is performed for non-commercial purposes.

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----- End forwarded message -----


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