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             AUSCERT External Security Bulletin Redistribution

                        ESB-2006.0734 -- [Solaris]
      Security Vulnerability in Apache 2 Web Server Module 'mod_ssl'
                             15 November 2006

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

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

Product:              mod_ssl
Publisher:            Sun Microsystems
Operating System:     Solaris 10
Impact:               Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2005-3357

Ref:                  ESB-2006.006

Original Bulletin:
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102640-1

Revision History:  November 15 2006: Sun has updated the Resolution section
                   October   6 2006: Initial Release

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Sun(sm) Alert Notification
     * Sun Alert ID: 102640
     * Synopsis: Security Vulnerability in Apache 2 Web Server Module
       'mod_ssl'
     * Category: Security
     * Product: Solaris 10 Operating System
     * BugIDs: 6423037
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 04-Oct-2006
     * Date Closed: 04-Oct-2006
     * Date Modified: 13-Nov-2006

1. Impact

   When the Apache 2 Web Server shipped with Solaris 10 is configured to
   support the Secure Sockets Layer (SSL), it may be possible for a local
   or remote unprivileged user to cause a Denial of Service (DoS) to the
   Apache application.

   This issue is also described in the following documents:

   CVE-2005-3357
   at http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3357

   The change log for Apache 2.0 at
   http://www.apache.org/dist/httpd/CHANGES_2.0

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 10 without patch 120543-06

   x86 Platform
     * Solaris 10 without patch 120544-06

   Note 1: Solaris 8 and 9 are not affected by this issue.

   Note 2: A system is only vulnerable to this issue if the Apache 2.0
   Web Server is running on the system and has been configured with SSL.

   To determine if the Apache Web Server service is enabled, The
   following SMF command can be run:
    $ svcs svc:/network/http:apache2
    STATE          STIME    FMRI
    disabled       Feb_02   svc:/network/http:apache2

   If the output asserts that the pattern does not match any instances,
   or if the STATE is 'disabled', then the host is not vulnerable.

   Note 3: The vulnerability CVE-2005-3357 (listed in "Impact") was fixed
   in Apache version 2.0.56.

   To determine the Apache 2.0 web server version installed on a host,
   the following command can be run:
    $ /usr/apache2/bin/httpd -v
    Server version: Apache/2.0.55
    Server built:   Jan 22 2006 02:10:22

   Note 4: If the Apache Web Server is configured to use the 'mod_ssl'
   module, text similar to the following will be printed to the error log
   when Apache is started:
    $ grep mod_ssl /var/apache2/logs/error_log
    [Tue Sep 26 17:23:13 2006] [notice] Apache/2.0.52 (Unix)
    DAV/2 mod_ssl/2.0.52 OpenSSL/0.9.7d mod_perl/2.0.0 Perl/v5.8.4 configured--
    resuming normal operations

   If no 'mod_ssl' version information is displayed in the log when the
   application is started, the Apache 2 Web Server is not configured to
   use SSL.

3. Symptoms

   Apache 2 Web Server may be slow to respond to requests or may not
   respond at all. 

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 releases:

   SPARC Platform
     * Solaris 10 with patch 120543-06 or later

   x86 Platform
     * Solaris 10 with patch 120544-06 or later

   Note: An issue with these patches 120543-06 120544-06 means
   that they should only be installed after first installing other
   patches.

   A) Before installing 120543-06, first install 121901-01 or
   later and 119042-09 or later

   B) Before installing 120544-06 first install 121902-01 or
   later and 119043-09 or later

Change History

   13-Nov-2006:
     * Updated Resolution section

   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,
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   OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
   This Sun Alert notification contains Sun proprietary and confidential
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   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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