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UNIRAS Brief - 597/05 - Hewlett Packard - Remote Denial of Service and client restriction bypass



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 597/05 dated 02.08.05  Time: 11:21
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
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HP SECURITY BULLETIN
Apache on HP-UX Remote Denial of Service and client restriction bypass


Detail
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HP SECURITY BULLETIN

HPSBUX01123     REVISION: 1

SSRT5931 rev.1 Apache on HP-UX Remote Denial of Service and client
restriction bypass

NOTICE:
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.

INITIAL RELEASE:
31 July 2005

POTENTIAL SECURITY IMPACT:
Remote Denial of Service (DoS) and bypass of SSLCipherSuite
settings.

SOURCE:
Hewlett-Packard Company
HP Software Security Response Team

VULNERABILITY SUMMARY:
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
SSLCipherSuite restrictions.



REFERENCES:
CAN-2004-0942, CAN-2004-0885

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.

BACKGROUND:

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
following
CAN-2004-0942 and CAN-2004-0885.

     AFFECTED VERSIONS

     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.

      For IPv4:
      HP-UX B.11.00
      HP-UX B.11.11
      =============
      hpuxwsAPACHE
      action: install revision A.2.0.53.00 or subsequent

 -> HP-UX B.11.04
 -> =============
 -> Virtualvault A.04.70 (Apache 2.x)
 -> VaultWS.WS-CORE
 -> action: install PHSS_33075 or subsequent

      HP-UX B.11.22
      =============
      hpuxwsAPACHE
      action: migrate to B.11.23

      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
      action: install revision B.2.0.53.00 or subsequent

      HP-UX B.11.23
      =============
      hpuxwsAPACHE
      action: install revision B.2.0.53.00 or subsequent

     END AFFECTED VERSIONS

RESOLUTION:

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
      supported.
      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 security-alert@xxxxxx  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


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://software.hp.com/portal/swdepot/displayProductInfo.do?
   productNumber=HPUXWSATW211>

- - - - 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
"HOME" variables.

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

hpapache2conf

hpws_apache[32]conf

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
      Initial release

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
HP-UX system.

For more information:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA


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@xxxxxxx 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@xxxxxx with the Subject of
'get key' (no quotes).

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 IRTC security bulletins and patches
     - check ALL categories for which alerts are required and
       continue.
Under Step2: your IRTC 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://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:
    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
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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For additional information or assistance, please contact the HELP Desk by 
telephone or Not Protectively Marked information may be sent via 
EMail to: uniras@xxxxxxxxxxxx

Office Hours:
Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 870 487 0748 Ext 4511
Fax: +44 (0) 870 487 0749

Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 870 487 0748 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of Hewlett Packard for the 
information contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
and opinions of authors expressed within this notice shall not be used for 
advertising or product endorsement purposes.

Neither UNIRAS or NISCC shall also accept responsibility for any errors 
or omissions contained within this briefing notice. In particular, they shall 
not be liable for any loss or damage whatsoever, arising from or in connection 
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>




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