[security bulletin] SSRT051251 - Apache-based Web Server on HP-UX mod_ssl, proxy_http, Remote Execution of Arbitrary Code, Denial of Service (DoS), and Unauthorized Access
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c00555254
Version: 1
HPSBUX02074 SSRT051251 - Apache-based Web Server on HP-UX mod_ssl,
proxy_http, Remote Execution of Arbitrary Code, Denial of Service
(DoS), and Unauthorized Access
NOTICE: The information in this Security Bulletin should be acted
upon as soon as possible.
Release Date: 2005-11-10
Last Updated: 2005-11-15
Potential Security Impact: Remote execution of arbitrary code,
Denial of Service (DoS), and unauthorized access.
Source: Hewlett-Packard Company,
HP Software Security Response Team
VULNERABILITY SUMMARY
Potential security vulnerabilities have been identified with
Apache running on HP-UX. These vulnerability could be exploited
remotely to allow execution of arbitrary code, Denial of Service
(DoS), or unauthorized access.
References: CVE-2005-2491, CVE-2005-1268, CVE-2005-2728,
CVE-2005-2088.
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.00, B.11.11, B.11.23 running Apache-based Web Server
prior to v.2.0.55.
BACKGROUND
The following potential security vulnerabilities are resolved in
the software updates listed below:
CVE-2005-2088 (cve.mitre.org): HTTP Request Smuggling.
CVE-2005-2491 (cve.mitre.org): Integer overflow in pcre_compile.c.
CVE-2005-2728 (cve.mitre.org): Remote denial of service.
CVE-2005-1268 (cve.mitre.org): Remote denial of service.
AFFECTED VERSIONS
For IPv4:
HP-UX B.11.00
HP-UX B.11.11
=============
hpuxwsAPACHE
action: install revision A.2.0.55.00 or subsequent
For IPv6:
HP-UX B.11.11
=============
hpuxwsAPACHE,revision=B.1.0.00.01
hpuxwsAPACHE,revision=B.1.0.07.01
hpuxwsAPACHE,revision=B.1.0.08.01
hpuxwsAPACHE,revision=B.1.0.09.01
hpuxwsAPACHE,revision=B.1.0.10.01
hpuxwsAPACHE,revision=B.2.0.48.00
hpuxwsAPACHE,revision=B.2.0.49.00
hpuxwsAPACHE,revision=B.2.0.50.00
hpuxwsAPACHE,revision=B.2.0.51.00
hpuxwsAPACHE,revision=B.2.0.52.00
hpuxwsAPACHE,revision=B.2.0.53.00
hpuxwsAPACHE,revision=B.2.0.54.00
action: install revision B.2.0.55.00 or subsequent
HP-UX B.11.23
=============
hpuxwsAPACHE
action: install revision B.2.0.55.00 or subsequent
END AFFECTED VERSIONS
RESOLUTION
HP has made the following software updates available to resolve
the issue.
Software updates for the Apache-based Web Server are available
from: http://h20293.www2.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=HPUXWSSUITE
HP-UX B.11.00, B.11.11 and HP-UX B.11.23 require the Apache-based
Web Server v.2.0.55.00 or subsequent.
Apache Update Procedure
Check for Apache Installation
----------------------------
To determine if the Apache web server from HP is installed on your
system, use Software Distributor's swlist command. All three
revisions of the product may co-exist on a single system.
For example, the results of the command
swlist -l product | grep -i apache
hpuxwsAPACHE B.2.0.54.00 HP-UX Apache-based Web Server
Stop Apache
-------------
Before updating, make sure to stop any previous Apache binary.
Otherwise, the previous binary will continue running, preventing
the new one from starting, although the installation would be
successful. After determining which Apache is installed, stop
Apache with the following commands:
for hpuxwsAPACHE: /opt/hpws/apache[32]/bin/apachectl stop
Download and Install Apache
-----------------------------
Download Apache from Software Depot:
http://h20293.www2.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=HPUXWSSUITE
Verify successful download by comparing the cksum with the value
specified on the installation web page.
Use SD to swinstall the depot.
Installation of this new revision of HP Apache over an existing HP
Apache installation is supported, while installation over a non-HP
Apache is NOT supported.
Removing Apache Installation
----------------------------
If you prefer to remove Apache from your system instead of
installing a newer revision to resolve the security problem, use
both Software Distributor's "swremove" command and also "rm -rf"
the home location as specified in the rc.config.d file "HOME"
variables.
%ls /etc/rc.config.d |
grep apache hpapache2conf hpws_apache[32]conf
MANUAL ACTIONS: Yes - Update plus other actions
Install the revision of the product.
PRODUCT SPECIFIC INFORMATION
HP-UX Security Patch Check: Security Patch Check revision B.02.00
analyzes all HP-issued Security Bulletins to provide a subset of
recommended actions that potentially affect a specific HP-UX
system. For more information:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi
displayProductInfo.pl?productnumber=B6834AAtN
UPDATE HISTORY
Initial release: 15 November 2005
Support: For further information, contact normal HP Services
support channel.
Report: To report a potential security vulnerability with any HP
supported product, send Email to: security-alert@xxxxxxx It is
strongly recommended that security related information being
communicated to HP be encrypted using PGP, especially exploit
information. To get the security-alert PGP key, please send an
e-mail message as follows:
To: security-alert@xxxxxx
Subject: get key
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On the web page: ITRC security bulletins and patch sign-up
Under Step1: your ITRC security bulletins and patches
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To review previously published Security Bulletins visit:
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* The Software Product Category that this Security Bulletin
relates to is represented by the 5th and 6th characters of the
Bulletin number in the title:
GN = HP General SW,
MA = HP Management Agents,
MI = Misc. 3rd party SW,
MP = HP MPE/iX,
NS = HP NonStop Servers,
OV = HP OpenVMS,
PI = HP Printing & Imaging,
ST = HP Storage SW,
TL = HP Trusted Linux,
TU = HP Tru64 UNIX,
UX = HP-UX,
VV = HP Virtual Vault
System management and security procedures must be reviewed
frequently to maintain system integrity. HP is continually
reviewing and enhancing the security features of software products
to provide customers with current secure solutions.
"HP is broadly distributing this Security Bulletin in order to
bring to the attention of users of the affected HP products the
important security information contained in this Bulletin. HP
recommends that all users determine the applicability of this
information to their individual situations and take appropriate
action. HP does not warrant that this information is necessarily
accurate or complete for all user situations and, consequently, HP
will not be responsible for any damages resulting from user's use
or disregard of the information provided in this Bulletin. To the
extent permitted by law, HP disclaims all warranties, either
express or implied, including the warranties of merchantability
and fitness for a particular purpose, title and non-infringement."
(c)Copyright 2005 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
provided is provided "as is" without warranty of any kind. To the
extent permitted by law, neither HP nor its affiliates,
subcontractors or suppliers will be liable for incidental, special
or consequential damages including downtime cost; lost profits;
damages relating to the procurement of substitute products or
services; or damages for loss of data, or software restoration.
The information in this document is subject to change without
notice. Hewlett-Packard Company and the names of Hewlett-Packard
products referenced herein are trademarks of Hewlett-Packard
Company in the United States and other countries. Other product
and company names mentioned herein may be trademarks of their
respective owners.
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