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TUCoPS :: HP/UX :: b06-1096.htm

Apache-based Web Server on HP-UX mod_ssl, proxy_http, Remote Execution of Arbitrary Code, DoS



SSRT051251 rev.2 - Apache-based Web Server on HP-UX mod_ssl, proxy_http, Remote Execution of Arbitrary Code, Denial of Service (DoS), and Unauthorized Access
SSRT051251 rev.2 - 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: 2

HPSBUX02074 SSRT051251 rev.2 - 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: 2006-02-27
Last Updated: 2006-03-15

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.

 -> HP-UX B.11.04 with Virtualvault 4.7 running Apache 2.x Web
 -> Server.

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

 -> HP-UX B.11.04 Virtualvault A.04.70 (Apache 2.x)
 -> ============================= -> VaultWS.WS-CORE
 -> action: install PHSS_34123 or subsequent

 -> HP-UX B.11.04 HP Webproxy A.02.10 (Apache 2.x)
 -> ============================= -> HP_Webproxy.HPWEB-PX-CORE
 -> action: install PHSS_34163 or subsequent

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 patches and software updates available
to resolve the issue.

 -> For B.11.04 HP has made the following patch available:
 -> PHSS_34123 Virtualvault 4.7 OWS (Apache 2.x) update
 -> PHSS_34163 Webproxy server 2.1 (Apache 2.x) update

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://software.hp.com/portal/swdepot/displayProductInfo.do? 
productNumber=B6834AA

HISTORY:
rev.0 - 15 November 2005 Initial Release
Version: 1 (rev.1) Skipped for formatting reasons
Version: 2 (rev.2) - 15 March 2006 included B.11.04


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@hp.com. 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@hp.com 
  Subject: get key

Subscribe: To initiate a subscription to receive future HP
Security Bulletins via Email:
http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA& 
langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC

On the web page: ITRC security bulletins and patch sign-up
Under Step1: your ITRC security bulletins and patches
  - check ALL categories for which alerts are required and
    continue.
Under Step2: your ITRC operating systems
  - verify your operating system selections are checked and
    save.

To update an existing subscription:
http://h30046.www3.hp.com/subSignIn.php 
Log in on the web page:
  Subscriber's choice for Business: sign-in.
On the web page:
  Subscriber's Choice: your profile summary
    - use Edit Profile to update appropriate sections.

To review previously published Security Bulletins visit:
http://www.itrc.hp.com/service/cki/secBullArchive.do 

* 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 2006 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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