SSRT5931 rev.1 Apache on HP-UX Remote Denial of Service and client restriction bypass
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HP SECURITY BULLETIN
HPSBUX01123 REVISION: 1
SSRT5931 rev.1 Apache on HP-UX Remote Denial of Service and client
There are no restrictions for distribution of this Security
Bulletin provided that it remains complete and intact.
The information in this Security Bulletin should be acted upon
as soon as possible.
31 July 2005
POTENTIAL SECURITY IMPACT:
Remote Denial of Service (DoS) and bypass of SSLCipherSuite
HP Software Security Response Team
A potential security vulnerability has been identified with Apache
running on HP-UX where the vulnerability could be exploited
remotely to create a Denial of Service (DoS) or to bypass
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.00, B.11.11, B.11.22, and B.11.23 running the
hpuxwsAPACHE HP-UX Apache-based Web Server.
-> HP-UX B.11.04 with Virtualvault 4.7 running
-> Apache 2.x Web Server.
Two potential security vulnerabilities have been identified in
Apache Web Server. The Common Vulnerabilities and Exposures
project <http://cve.mitre.org/> has referenced them as the
CAN-2004-0942 and CAN-2004-0885.
Note: To determine if a system has an affected version,
search the output of "swlist -a revision -l fileset"
for an affected fileset. Then determine if the
recommended patch or update is installed.
action: install revision A.2.0.53.00 or subsequent
-> HP-UX B.11.04
-> Virtualvault A.04.70 (Apache 2.x)
-> action: install PHSS_33075 or subsequent
action: migrate to B.11.23
action: install revision B.2.0.53.00 or subsequent
action: install revision B.2.0.53.00 or subsequent
END AFFECTED VERSIONS
HP has made the following available to resolve the issue:
HP-UX B.11.00 - Apache revision A.2.0.53.00 or subsequent
- ->HP-UX B.11.04 - VirtualVault 4.7 OWS PHSS_33075 or subsequent
HP-UX B.11.11 (IPv4) - Apache revision A.2.0.53.00 or subsequent
HP-UX B.11.11 (IPv6) - Apache revision B.2.0.53.00 or subsequent
HP-UX B.11.22 - Upgrade to HP-UX B.11.23
HP-UX B.11.23 - Apache revision B.2.0.53.00 or subsequent
NOTE: Support ended for HP-UX Web Server Suite for HP-UX 11i v1.6
(B.11.22) after March 31, 2004. HP-UX Web Server Suite for
HP-UX 11i v1.6 (B.11.22) is no longer available or
Users of HP-UX Web Server Suite on HP-UX 11i v1.6 are
encouraged to update to HP-UX 11i v2 (B.11.23) and install
the latest HP-UX Web Server Suite for HP-UX 11i v2.
Please write to [email]firstname.lastname@example.org[/email] for more information.
- ->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
versions products may co-exist on a single system.
For example, the results of the command
swlist -l product | grep -i apache
hpuxwsAPACHE B.2.0.52.00 HP-UX Apache-based Web Server
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/bin/apachectl stop
Download and Install Apache
- - Download Apache from Software Depot:
- - 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 version 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 version 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
%ls /etc/rc.config.d | grep apache
MANUAL ACTIONS: Yes - NonUpdate
Install the product containing the fix.
HP-UX B.11.22 requires upgrading to HP-UX B.11.23.
BULLETIN REVISION HISTORY:
Revision 0 14 March 2005
Revision 1 28 July 2005
Updated for HP-UX B.11.04
HP-UX SPECIFIC SECURITY BULLETINS*: 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
For more information:
SUPPORT: For further information, contact normal HP Services
REPORT: To report a potential security vulnerability with any HP
supported product, send Email to: [email]email@example.com[/email]. It is
strongly recommended that security related information being
communicated to HP be encrypted using PGP, especially exploit
information. To obtain the security-alert PGP key please send an
e-mail message to [email]firstname.lastname@example.org[/email] with the Subject of
'get key' (no quotes).
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On the web page: ITRC security bulletins and patch sign-up
Under Step1: your IRTC security bulletins and patches
- check ALL categories for which alerts are required and
Under Step2: your IRTC operating systems
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To review previously published Security Bulletins visit:
* The Software Product Category that this Security Bulletin
relates to is represented by the 5th and 6th characters of the
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
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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
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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
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HP S/W Security Team
WTEC Cupertino, California