AUSCERT External Security Bulletin Redistribution

                       Sec. Vulnerability in Apache
                             01 November 2002


        AusCERT Security Bulletin Summary

Product:                Apache
Vendor:                 Hewlett-Packard
Operating System:       HP-UX 11.22
                        HP-UX 11.20
                        HP-UX 11.11
                        HP-UX 11.00
Platform:               HP9000
Impact:                 Execute Arbitrary Code/Commands
                        Denial of Service
                        Increased Privileges
Access Required:        Remote

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Document ID:  HPSBUX0210-224
Date Loaded:  20021029
      Title:  Sec. Vulnerability in Apache

- -----------------------------------------------------------------
  Originally issued: 30 Oct 2002
  SSRT 2393 Apache Vulnerabilities

NOTICE: There are no restrictions for distribution of this Bulletin
provided that it remains complete and intact.

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.

PROBLEM:  Vulnerability regarding ownership permissions of System V
          shared memory based scoreboards.  The fix resulted in the
          new ShmemUIDisUser directive. (CERT Vul. Note VU#825353
          and CVE CAN-2002-0839)

          Cross-site scripting vulnerability in the default error
          page when using wildcard DNS. (CERT Vul. Note VU#240329
          and CVE CAN-2002-0840)

          Vulnerability regarding some possible overflows in ab.c
          which could be exploited by a malicious server.
          (CERT Vul. Note VU#858881 and CVE CAN-2002-0843)

          Fix the exposure of CGI source when a POST request is sent
          to a location where both DAV and CGI are enabled.
          (CERT Vul. Note VU#910713 and CVE CAN-2002-1156)

IMPACT:   Potential for increased privilege, denial of service (DoS),
          or execution of arbitrary code.

PLATFORM: HP9000 Servers running HP-UX release 11.00, 11.11, 11.20,
          and 11.22 with versions or and earlier,
          of the HP Apache product installed are affected.

SOLUTION: For HP-UX releases 11.00, 11.11, 11.20 and 11.22 as well
          as release 11.11 running IPv6, download new HP Apache
          product ( or or later) from

                       Install repaired binary upgrading to
                       Apache or Apache

AVAILABILITY: Complete product bundles are available now on

A. Background
   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has identified multiple vulnerabilities in the Apache HTTP
   Server.  It affects the following HP product numbers:

     B9415AA Apache 1.3.x  HP-UX releases 11.00 and 11.11
     B9416AA Apache 2.x    HP-UX releases 11.00 and 11.11
     B9415AA Apache 1.3.x  HP-UX releases 11.20 and 11.22
     B9416AA Apache 2.x    HP-UX releases 11.20 and 11.22
     B9416BA Apache 2.x    IPv6 HP-UX release 11.11

   With this release HP has upgraded to Apache 2.0.43 and
   Apache 1.3.27, and fixes certain known vulnerabilities in the
   Apache HTTP Server.
   The release incorporates fix for the following problems:
     CAN-2002-0839 : Apache 1.3.26
     CAN-2002-0840 : Apache 1.3.26 and Apache 2.0.39
     CAN-2002-0843 : Apache 1.3.26 and Apache 2.0.39
     CAN-2002-1156 : Apache 2.0.39
   More details on this information can be found at
   The CVE issues can be found at http://cve.mitre.org

   The Apache Group has released Apache 2.0.43 and Apache
   1.3.27 as the best known version that fixes the problems
   identified in the above mentioned CVE issues.

   Before updating, make sure to stop any 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.

 B. Fixing the problem
    The fixes for all HP-UX versions are in the form of new product
    bundles, instead of patches.  To retrieve them, go to

    Install HP Apache versions or or later.

    Note: OpenView Network Node Manager (NNM) customers should not
          install these versions.  The version of Apache delivered
          with NNM is under investigation.  This bulletin will be
          updated when more information is available.

 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


    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.


    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:

    The security patch matrix is also available via anonymous


    On the "Support Information Digest Main" page:
    click on the "HP Security Bulletin Archive".

 D. To report new security vulnerabilities, send email to


    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-alert@hp.com.


(c) Copyright 2002 Hewlett-Packard Company
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
in this document is subject to change without notice.
Hewlett-Packard Company and the names of HP products referenced
herein are trademarks and/or service marks of Hewlett-Packard
Company.  Other product and company names mentioned herein may be
trademarks and/or service marks of their respective owners.

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