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**REVISED 07**
HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0207-197
Originally issued: 01 Jul 2002
Last revision: 27 Aug 2002
SSRT2332 Security Vulnerability in Apache Server Chunk Encoding
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The information in the following Security Bulletin should be acted
upon as soon as possible. Hewlett-Packard Company will not be
liable for any consequences to any customer resulting from customer's
failure to fully implement instructions in this Security Bulletin as
soon as possible.
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PROBLEM: A remotely exploitable potential for vulnerability in
handling of large data chunks in Apache-based web servers.
PLATFORM: HP9000 Servers running HP-UX release 11.00, 11.04, 11.11
11.20, and 11.22 with the HP Apache product installed.
DAMAGE: Potential for increased privilege, DoS, or execution of
arbitrary code.
**REVISED 07**
SOLUTION: For HP-UX releases 11.00, 11.11, 11.11 running IPv6,
11.20, and 11.22 download new product bundles from
<www.software.hp.com/ISS_products_list.html>
For only HP-UX release 11.04 (VV-OS): apply patches
--->> PHSS_27361, PHSS_27423 - for VV A.04.60 release,
--->> PHSS_27371, PHSS_27477 - for VV A.04.50 release.
MANUAL ACTIONS: Yes - Install repaired binary.
AVAILABILITY: Complete product bundles are available now for 11.00
and 11.11 are available for PA-RISC architecture
platforms from <www.software.hp.com>
HP-UX 11.04 (VV-OS) patches are available now at
itrc.hp.com
CHANGE SUMMARY: Rev.01 - Do not install the bundle on NNM.
Rev.02 - Added Virtualvault patches.
Rev.03 - Re-released 1.3.26 bits due to an update
deficiency and other minor problems.
Rev.04 - Added IPF versions.
Rev.05 - Added IPv6 PA-RISC version.
Rev.06 - Bundles available from software.hp.com
---->>> Rev.07 - Added additional Virtualvault patches.
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A. Background
The CERT Advisory CA-2002-17 regarding Apache affects the
following HP product numbers:
B9415AA Apache 1.3.x PA-RISC HP-UX releases 11.00 and 11.11
B9416AA Apache 2.x PA-RISC HP-UX releases 11.00 and 11.11
B9415AA Apache 1.3.x IPF HP-UX releases 11.20 and 11.22
B9416AA Apache 2.x IPF HP-UX releases 11.20 and 11.22
B9416BA Apache 2.x IPv6 PA_RISC HP-UX release 11.11
HP Apache 1.3.26 (PA-RISC)
installs into /opt/apache and /opt/tomcat
disk space: 55-65 MB
documents: /opt/apache/htdocs/doc
HP Apache 2.0.39 (PA-RISC)
installs into /opt/hpapache2
disk space: 80-90 MB
documents: /opt/hpapache2/hp_apache_docs
HP Apache 1.3.26 (IPF)
installs into /opt/apache and /opt/tomcat
disk space: 65-75 MB
documents: /opt/apache/hp_apache_docs
HP Apache 2.0.39 (IPF)
installs into /opt/hpapache2
disk space: 80-90 MB
documents: /opt/hpapache2/hp_apache_docs
HP Apache 2.0.39 IP version 6 (PA-RISC)
installs into /opt/hpapache2
disk space: 80-90 MB
documents: /opt/hpapache2/hp_apache_docs
Before updating, make sure to stop your previous HP Apache
binary. Otherwise, the previous binary will continue running,
preventing the new one from automatically starting, although
the installation would be successful.
The command to stop the HP Apache binary is:
for 1.3.26:
/opt/apache/bin/apachectl stop
for 2.0.39:
/opt/hpapache2/bin/apachectl stop
HP Apache automatically starts upon installation if port 80
is available.
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.
==================================================================
An advisory has been issued for HP Compaq systems. Please
refer to HP Compaq SSRT2253, which says in part:
CSWS Secure Web Server for HP Tru64 UNIX and HP OpenVMS
"Potential Apache Web Server Chunk Handling Vulnerability"
Patches are available for CSWS for HP Tru64 UNIX at:
http://tru64unix.compaq.com/internet/download.htm#sws_v591
Patches are available for CSWS for HP OpenVMS at:
http://www.openvms.compaq.com/openvms/products/ips/apache/
+csws_patches.html
B. Fixing the problem
Note: OpenView Network Node Manager (NNM) customers should not
install the ftp bundles. The version of Apache delivered
with NNM is under investigation. This bulletin will be
updated when more information is available.
**REVISED 07**
-->> The Virtualvault product (also known as HP-UX 11.04) has
-->> patches for its 4.5 and 4.6 releases. The patches for VV 4.6
-->> update both the inside and outside web server to the
-->> Apache 1.3.26 version from the Apache 1.3.22 version shipped
-->> with the VV 4.6 release.
-->> For the VV 4.5 patch, the security fix from the Apache 1.3.26
-->> version was backported to the 1.3.19 version per the Apache
-->> Group's patch for httpd 1.2.0-1.3.22.
-->> Both of these Virtualvault patches are available in
itrc.hp.com.
-->> PHSS_27361, PHSS_27423 - for VV A.04.60 release.
-->> PHSS_27371, PHSS_27477 - for VV A.04.50 release.
The fixes for both PA-RISC and IPF (Itanium Processor Family)
versions are in the form of new product bundles, instead of
patches. These are currently available from software.hp.com,
under "Internet and Security Solutions".
C. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP IT Resource Center via electronic
mail, do the following:
Use your browser to get to the HP IT Resource Center page at:
http://itrc.hp.com
Use the 'Login' tab at the left side of the screen to login
using your ID and password. Use your existing login or the
"Register" button at the left to create a login, in order to
gain access to many areas of the ITRC. Remember to save the
User ID assigned to you, and your password.
In the left most frame select "Maintenance and Support".
Under the "Notifications" section (near the bottom of
the page), select "Support Information Digests".
To -subscribe- to future HP Security Bulletins or other
Technical Digests, click the check box (in the left column)
for the appropriate digest and then click the "Update
Subscriptions" button at the bottom of the page.
or
To -review- bulletins already released, select the link
(in the middle column) for the appropriate digest.
To -gain access- to the Security Patch Matrix, select
the link for "The Security Bulletins Archive". (near the
bottom of the page) Once in the archive the third link is
to the current Security Patch Matrix. Updated daily, this
matrix categorizes security patches by platform/OS release,
and by bulletin topic. Security Patch Check completely
automates the process of reviewing the patch matrix for
11.XX systems.
For information on the Security Patch Check tool, see:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA
The security patch matrix is also available via anonymous
ftp:
ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/
On the "Support Information Digest Main" page:
click on the "HP Security Bulletin Archive".
D. To report new security vulnerabilities, send email to
security-al...@hp.com
Please encrypt any exploit information using the
security-alert PGP key, available from your local key
server, or by sending a message with a -subject- (not body)
of 'get key' (no quotes) to security-al...@hp.com.
Permission is granted for copying and circulating this
Bulletin to Hewlett-Packard (HP) customers (or the Internet
community) for the purpose of alerting them to problems,
if and only if, the Bulletin is not edited or changed in
any way, is attributed to HP, and provided such reproduction
and/or distribution is performed for non-commercial purposes.
Any other use of this information is prohibited. HP is not
liable for any misuse of this information by any third party.
________________________________________________________________
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--
Yours truly,
HP S/W Security Team
WTEC Cupertino, California
Return-Path: sec...@cup.hp.com
Reply-to: security-al...@hp.com