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- Security Alert
August 13, 2004, 3:48 pm
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HP SECURITY BULLETIN
HPSBUX01069 REVISION: 1
SSRT4789 rev. 1 HP-UX Apache server remote Denial of Service and
bypassing access restrictions
There are no restrictions for distribution of this Bulletin
provided that it remains complete and intact.
The information in this Security bulletin should be acted upon
as soon as possible.
INITIAL RELEASE: 11 August 2004
POTENTIAL SECURITY IMPACT: Remote Denial of Service and bypass
of access restrictions.
SOURCE: HEWLETT-PACKARD COMPANY
HP Software Security Response Team
REFERENCES: CAN-2003-0987, CAN-2003-0020, CAN-2004-0174 and
->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 access restrictions.
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.04 with Virtualvault 4.7, Virtualvault 4.6, or
Four potential security vulnerabilities have been reported in
Apache HTTP server (http://httpd.apache.org /). The Common
Vulnerabilities and Exposures project < http://cve.mitre.org/
has referenced them as the candidates CAN-2003-0987,
CAN-2003-0020, CAN-2004-0174, and CAN-2003-0993.
1. mod_digest in Apache 1.3 before 1.3.31 does not properly verify
the nonce of a client response by using a AuthNonce secret.
2. Apache 1.3 before 1.3.30 does not filter terminal escape
sequences from its error logs, which could make it easier for
attackers to insert those sequences into the terminal emulators
containing vulnerabilities related to escape sequence handling.
3. Apache 1.3 before 1.3.30, when using multiple listening sockets
on certain platforms, allows remote attackers to cause a Denial
of Service (blocked new connections) via a "short-lived
connection on a rarely-accessed listening socket."
4. mod_access in Apache 1.3 before 1.3.30, when running on
big-endian 64-bit platforms, does not properly parse Allow/Deny
rules using IP addresses without a netmask. This could allow
remote attackers to bypass intended access restrictions.
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.
HP-UX B.11.04 Virtualvault A.04.70
action: install PHSS_30944 or subsequent
action: install PHSS_31058 or subsequent
HP-UX B.11.04 Virtualvault A.04.60
action: install PHSS_30946 or subsequent
action: install PHSS_31057 or subsequent
HP-UX B.11.04 Virtualvault A.04.50
action: install PHSS_30647 or subsequent
action: install PHSS_30648 or subsequent
HP-UX B.11.04 HP Webproxy A.02.10
action: install PHSS_30950 or subsequent
HP-UX B.11.04 HP Webproxy A.02.00
action: install PHSS_30949 or subsequent
END AFFECTED VERSIONS
HP has made the following patches available:
PHSS_30944 Virtualvault 4.7 IWS update
PHSS_31058 Virtualvault 4.7 OWS update
PHSS_30946 Virtualvault 4.6 IWS update
PHSS_31057 Virtualvault 4.6 OWS update
PHSS_30647 Virtualvault 4.5 IWS update
PHSS_30648 Virtualvault 4.5 OWS update
PHSS_30950 Webproxy server 2.1 update
PHSS_30949 Webproxy server 2.0 update
MANUAL ACTIONS: No
BULLETIN REVISION HISTORY:
Revision 0 - 5 August 2004
Revision 1 - 11 August 2004
Clarified vulnerability summary.
* The software product category that this Security Bulletin
relates to is represented by the 5th and 6th characters of the
Bulletin number: GN=General, MA=Management Agents,
MI=Misc. 3rd party, MP=HP-MPE/iX, NS=HP NonStop Servers,
OV=HP OpenVMS, PI=HP Printing & Imaging, ST=HP Storage,
TU=HP Tru64 UNIX, TL=Trusted Linux, UX=HP-UX, VV=Virtual Vault
SUPPORT: For further information, contact HP Services support
SUBSCRIBE: To initiate a subscription to receive future HP
Security Bulletins via Email:
On the web page:
Driver and Support Alerts/Notifications Sign-up: Product Selection
Under Step1: your products
1. Select product category:
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2. Select product family or search:
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In Step 2: your operating system(s)
- check ALL operating systems for which alerts are required.
Complete the form and Save.
To update an existing subscription:
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.
Note: In addition to the individual alerts/notifications for the
selected operating systems/products, subscribers will
automatically receive one copy of alerts for non-operating system
categories (i.e., a subscriber who signs up for all six operating
system alerts will only receive one copy of all the non-operating
HP-UX SPECIFIC SECURITY BULLETINS*:
The HP-UX Security Patch Matrix is available here:
Or via anonymous ftp:
The HP-UX Security Patch Matrix, updated daily, categorizes
security patches by platform/OS release, and by Bulletin topic.
The Security Patch Check tool completely automates the process of
reviewing the Security Patch Matrix for HP-UX 11.XX Versions.
NOTE: Installing patches listed in the Security Patch Matrix will
completely implement the RESOLUTION in the Security Bulletin
_only_ if there are no MANUAL ACTIONS included.
The Security Patch Check tool can also verify that a Security
Bulletin RESOLUTION has been implemented on HP-UX 11.XX Versions
provided that no MANUAL ACTIONS were included. The Security Patch
Check tool cannot verify patches implemented via product upgrade.
For information on the Security Patch Check tool, see:
REPORT: To report a potential security vulnerability with any HP
supported product, send Email to: firstname.lastname@example.org. 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@example.com with the Subject of
'get key' (no quotes).
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
(c)Copyright 2004 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 or 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
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HP S/W Security Team
WTEC Cupertino, California
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