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HP SECURITY BULLETIN


HPSBUX01019 REVISION: 0

SSRT4717 rev.0 Remote denial of service in Apache OpenSSL SSL/TLS


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NOTICE:
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: 25 April 2004



POTENTIAL SECURITY IMPACT: Remote denial of service

SOURCE: HEWLETT-PACKARD COMPANY
HP Software Security Response Team

REFERENCES: CAN-2003-0079, CAN-2004-0112, CERT TA04-078A

VULNERABILITY SUMMARY:

Two potential security vulnerabilities have been identified in
OpenSSL by NISCC (224012/1 and 224012/2). The Common
Vulnerabilities and Exposures project < http://cve.mitre.org/>
has referenced them as the following CAN-2004-0079, and
CAN-2004-0112. The CERT summary is TA04-078A.

1. The do_change_cipher_spec function in OpenSSL allows remote
attackers to cause a denial of service via a crafted SSL/TLS
handshake that triggers a null dereference.
http://cve.mitre.org/cgi-bin/cvename...=CAN-2004-0079

2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does
not properly check the length of Kerberos tickets during a
handshake, which allows remote attackers to cause a denial of
service via a crafted SSL/TLS handshake that causes an
out-of-bounds read.
http://cve.mitre.org/cgi-bin/cvename...=CAN-2004-0112

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

HP9000 Servers running HP-UX release B.11.00, B.11.11, B.11.22,
and B.11.23 with versions of the following products are affected,
and represented as:
product-name, version (product-tag/bundle-tag)

- - hp apache-based web server, 2.0.43.04 or earlier
(HPApache/B9416AA). This product includes OpenSSL 0.9.6b.

- - hp-ux apache-based web server, v.2.01 or earlier
(hpuxwsAPACHE/hpuxwsApache).
This product includes OpenSSL 0.9.7c.

- - hp apache-based web server, 2.0.43.04 (with IPv6 support) or
earlier (HPApache/B9416BA).
This product includes OpenSSL 0.9.6b.

- - hp-ux apache-based web server(with IPv6 support), v.2.01 or
earlier (hpuxwsAPACHE/hpuxwsApache).
This product includes OpenSSL 0.9.7c.

BACKGROUND:

Two potential security vulnerabilities have been identified in
OpenSSL by NISCC ((224012/1 and 224012/2). The Common
Vulnerabilities and Exposures project <http://cve.mitre.org/>
has referenced them as CAN-2004-0079 and CAN-2004-0112.

AFFECTED VERSIONS

The following is a list of affected filesets or patches and fix
information. To determine if a system has an affected version,
search the output of "swlist -a revision -l fileset" for an
affected fileset or patch, then determine if a fixed revision or
applicable patch is installed.

HP-UX B.11.00

HP-UX B.11.11

HP-UX B.11.22

HP-UX B.11.23

============

HPApache.APACHE2

hpuxwsAPACHE.APACHE2

action: install hp-ux apache-based web server, v.2.03 or later

END AFFECTED VERSIONS

RESOLUTION:

The OpenSSL group has released patches to fix the vulnerabilities
in OpenSSL 0.9.7d. For customers using HPApache/B9416BA and
hpuxwsAPACHE/hpuxwsApache, HP has incorporated OpenSSL 0.9.7d in
the following product:

- - hp-ux apache-based web server v.2.03 or later

http://www.software.hp.com/cgi-bin/s...arser.cgi/cgi/
displayProductInfo.pl?productNumber=HPUXWSSUITE

Support ended for HP-UX Web Server Suite for HP-UX 11i v1.6
(11.22) after March 31, 2004. Starting from this release HP-UX
Web Server Suite for HP-UX 11i v1.6 (11.22) is no longer available
or supported. Users of HP-UX Web Server Suite on HP-UX 11i v1.6
are encouraged to update to HP-UX 11i v2 (11.23) and install the
latest HP-UX Web Server Suite for HP-UX 11i v2.



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

HPApache 2.0.39.01.02 HP Apache-based Web Server

hpuxwsAPACHE A.2.01 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 HPApache: /opt/hpapache2/bin/apachectl stop

for hpuxwsAPACHE: /opt/hpws/apache[32]/bin/apachectl stop



Download and Install Apache

- -----------------------------

- - Download Apache from Software Depot using the previously
mentioned links.

- - Verify successful download by comparing the cksum with the value
specified on the installation web page.

- - Use SD to swinstall the depot.

- - For customers with HPApache/B9416BA installed, migrate to
hpuxwsAPACHE/hpuxwsApache and remove the affected products from
the system. 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 rather remove Apache from your system than install 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 "HOME" variables.
To find the files containing HOME variables in the
/etc/rc.config.d directory:

%ls /etc/rc.config.d | grep apache

hpapache2conf

hpws_apache[32]conf

MANUAL ACTIONS: Yes - Update


Yes - Update

Install the product containing the fix.

For customers with HPApache/B9416AA HPApache/B9416BA installed,
the fix requires migration to hpuxwsAPACHE/hpuxwsApache and
removing the affected products from the system.


* 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
channel.

SUBSCRIBE: To initiate a subscription to receive future HP
Security Bulletins via Email:
http://h30046.www3.hp.com/driverAler...php?regioncode
=NA&langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC
On the web page:
Driver and Support Alerts/Notifications Sign-up: Product Selection
Under Step1: your products
1. Select product category:
- a minimum of servers must be selected.
2. Select product family or search:
- a minimum of one product must be selected.
3. Add a product:
- a minimum of one product must be added.
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:
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.

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
system alerts).

HP-UX SPECIFIC SECURITY BULLETINS*:
To review previously published Security Bulletins for HP-UX:
http://itrc.hp.com/cki/bin/doc.pl/sc...curityBulletin

The HP-UX Security Patch Matrix is available here:
http://itrc.hp.com/service/cki/docDisplay.do?docId=
hpuxSecurityMatrix
Or via anonymous ftp:
ftp://ftp.itrc.hp.com/export/patches..._patch_matrix/

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:
http://www.software.hp.com/cgi-bin/s...arser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA

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 obtain the security-alert PGP key please send an
e-mail message to security-alert@hp.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
and non-infringement."


(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
respective owners.

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--
Yours truly,
HP S/W Security Team
WTEC Cupertino, California


Return-Path: secure@cup.hp.com
Reply-to: security-alert@hp.com



--
Yours truly,
HP S/W Security Team
WTEC Cupertino, California


Return-Path: secure@cup.hp.com
Reply-to: security-alert@hp.com