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AUSCERT External Security Bulletin Redistribution
ESB-2006.0158 -- [Solaris]
Security Vulnerabilities in the Apache 1.3 Web Server
21 August 2006
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AusCERT Security Bulletin Summary
---------------------------------
Product: Apache 1.3
Publisher: Sun Microsystems
Operating System: Solaris 8, 9 and 10
Impact: Inappropriate Access
Execute Arbitrary Code/Commands
Cross-site Scripting
Access: Remote/Unauthenticated
CVE Names: CAN-2005-2700 CAN-2005-2088 CAN-2004-0940
Ref: ESB-2004.0694
ESB-2005.0589
ESB-2005.0690
Revision History: August 21 2006: Updated contributing factors and resolution
June 16 2006: Sun has released patches for Solaris 9
March 3 2006: Initial Release
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Sun(sm) Alert Notification
* Sun Alert ID: 102197
* Synopsis: Security Vulnerabilities in the Apache 1.3 Web Server
* Category: Security
* Product: Solaris 9 Operating System, Solaris 10 Operating System,
Solaris 8 Operating System
* BugIDs: 6204933, 6325738, 6308127
* Avoidance: Workaround, Patch
* State: Resolved
* Date Released: 01-Mar-2006, 15-Aug-2006
* Date Closed: 15-Aug-2006
* Date Modified: 07-Mar-2006, 14-Jun-2006, 13-Jul-2006, 15-Aug-2006
1. Impact
1. A vulnerability in the Apache 1.3 web server bundled with Solaris 8
and 9 may allow a local user who is able to create SSI documents which
are served by Apache to execute arbitrary code with the privileges of
the Apache 1.3 process. The Apache HTTP process normally runs as the
unprivileged user "nobody" (uid 60001).
2. A second vulnerability affects the Apache 1.3 web server bundled
with Solaris 10 which may prevent certain configured security features
from being applied to specific HTTP transactions when Apache is
configured to use SSL.
3. A third vulnerability in the Apache 1.3 web server may allow local
or remote unprivileged users to bypass security protections associated
with some network transactions, corrupt information stored in a web
cache, or perform cross site scripting activities when the Apache web
server is configured to run as a proxy.
These vulnerabilities are described at the following URLs:
The Change Log for Apache 1.3 at
http://www.apache.org/dist/httpd/CHANGES_1.3
CAN-2004-0940: "allows local users[...] to execute arbitrary code"
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0940
CAN-2005-2700: "does not properly enforce 'SSLVerifyClient require' "
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2700
CAN-2005-2088: "HTTP Request Smuggling"
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2088
2. Contributing Factors
Issue (1) described above (BugID 6204933) can occur in the following
releases:
SPARC Platform
* Solaris 8 without patch 116973-03
* Solaris 9 without patch 113146-07
x86 Platform
* Solaris 8 without patch 116974-03
* Solaris 9 without patch 114145-06
Issue (2) described above (BugID 6325738) can occur in the following
releases:
SPARC Platform
* Solaris 10 without patch 122911-01
x86 Platform
* Solaris 10 without patch 122912-01
Issue (3) described above (BugID 6308127) can occur in the following
releases:
SPARC Platform
* Solaris 8 without patch 116973-03
* Solaris 9 without patch 113146-07
* Solaris 10 without patch 122911-01
x86 Platform
* Solaris 8 without patch 116974-03
* Solaris 9 without patch 114145-06
* Solaris 10 without patch 122912-01
Note 1: A system is only vulnerable to these issues if the Apache 1.3
web server has been configured and is running on the system. The
following command can be executed to check if the Apache(1M) httpd
daemon is running on the system:
$ /usr/bin/ps -ef | grep httpd
nobody 103892 102307 0 Jan 20 ? 0:27 /usr/apache/bin/httpd
Apache was not bundled with Solaris prior to Solaris 8. However,
customers who have built and/or installed a vulnerable version of
Apache on any version of Solaris are at risk. See the Apache web site
to download the latest version of Apache which addresses these issues.
Note 2: The vulnerability CAN-2004-0940 is present in versions of
Apache 1.3 prior to 1.3.33. The vulnerability CAN-2005-2088 is present
in versions of Apache 1.3 prior to 1.3.34. The vulnerability
CAN-2005-2700 is present when Apache 1.3 is configured to use a
version of the 'mod_ssl' module prior to 2.8.24.
To determine the version of the Apache 1.3 web server installed on a
host, the following command can be run:
$ /usr/apache/bin/httpd -v
Server version: Apache/1.3.33 (Unix)
Server built: Jan 22 2006 01:41:39
The version number of the 'mod_ssl' module in use with Apache 1.3 is
displayed in the error log when the Apache process starts. For
example:
$ grep mod_ssl/ /var/apache/logs/error_log
[Fri Feb 17 14:50:48 2006] [notice] Apache/1.3.33 (Unix) mod_perl/1.29
mod_ssl/2.8.22 OpenSSL/0.9.7d configured -- resuming normal operations
Note 3: If no 'mod_ssl' version information is displayed in the log,
then the Apache 1.3 web server is not configured to use SSL and is
therefore not affected by issue CAN-2005-2700.
Note 4: Apache 2.0 also ships with Solaris 10, which is impacted by
some of the issues referenced in this Sun Alert. For details on the
impact to Apache 2.0 see Sun Alert 102198.
3. Symptoms
There are no predictable symptoms that would indicate that issue (1)
and (3) described above have been exploited.
If the system is affected by issue (2) described above, some data
served by the Apache 1.3 web server may be accessible by clients who
are not able to provide the correct credentials.
4. Relief/Workaround
Until patches are available and can be applied, sites may consider
downloading and compiling Apache 1.3.34 or higher from the Apache
site:
http://httpd.apache.org
and mod_ssl 2.8.24 or higher from the modssl site:
http://www.modssl.org/
as an interim workaround. Note however that the downloaded software is
not supported by Sun.
5. Resolution
This issue is addressed in the following releases:
For issue (1) described above (BugID 6204933):
SPARC Platform
* Solaris 8 with patch 116973-03 or later
* Solaris 9 with patch 113146-07 or later
x86 Platform
* Solaris 8 with patch 116974-03 or later
* Solaris 9 with patch 114145-06 or later
For issue (2) described above (BugID 6325738):
SPARC Platform
* Solaris 10 with patch 122911-01 or later
x86 Platform
* Solaris 10 with patch 122912-01 or later
For issue (3) described above (BugID 6308127):
SPARC Platform
* Solaris 8 with patch 116973-03 or later
* Solaris 9 with patch 113146-07 or later
* Solaris 10 with patch 122911-01 or later
x86 Platform
* Solaris 8 with patch 116974-03 or later
* Solaris 9 with patch 114145-06 or later
* Solaris 10 with patch 122912-01 or later
Change History
07-Mar-2006:
* Updated Contributing Factors
14-Jun-2006:
* Updated Contributing Factors and Resolution sections
13-Jul-2006:
* Updated Contributing Factors and Resolution sections
15-Aug-2006:
* Updated Contributing Factors and Resolution sections
* 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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