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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
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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,
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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