AUSCERT External Security Bulletin Redistribution

          SSRT3587 Security Vulnerabilities in Apache HTTP Server
                               17 July 2003


        AusCERT Security Bulletin Summary

Product:                Apache 2.0 versions 2.0.37 through 2.0.45
Publisher:              Hewlett-Packard
Operating System:       HP-UX 11.00
                        HP-UX 11.11
                        HP-UX 11.22
Impact:                 Execute Arbitrary Code/Commands
                        Denial of Service
Access Required:        Remote

CVE Names:              CAN-2003-0245, CAN-2003-0189

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Hash: SHA1

Originally issued: 16 July 2003
SSRT3587 Security Vulnerabilities in Apache HTTP Server

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: 1. Apache 2.0.40 through 2.0.45 do not properly handle
            threads correctly, potentially allowing a remote
            denial of service.

       More details are available at:

         2. A defect in Apache 2.0.37 through 2.0.45 potentially
            allows a remote denial of service.

       More details are available at:

IMPACT: Potential remote Denial of Service

PLATFORM: HP-UX releases B.11.00, B.11.11 and B.11.22 with
          versions of the following products are affected:

         - HPApache/B9416AA and HPApache/B9416BA (all versions)

         - hp-ux apache-based web server, (product hpuxwsAPACHE or
           hpuxwsApache) v. or earlier
           This product includes Apache 2.0.45.

        - hp apache-based web server, or earlier
          (HPApache/B9416AA, HPApache/B9416BA)
          This product includes Apache 2.0.43.

        - hp-ux apache-based web server, v. or earlier
          This product includes Apache 2.0.45.

  The affected filesets are: (product.fileset)
  HPApache.APACHE2   HP Apache 2.0.39
  hpuxwsAPACHE.APACHE2   A.    2.0.45 base (IPF Binaries)

SOLUTION: For HP-UX releases B.11.00, B.11.11 and B.11.22:
          1. Remove HPApache/B9416AA and HPApache/B9416BA if they
             are installed.

          2. Download and install:
             hp-ux apache-based web server, v. or later
             (product hpuxwsAPACHE or bundle hpuxwsApache)

     NOTE: The product install location and structure has changed
           between HPApache/B9416*A and hpuxwsAPACHE/hpuxwsApache.

             This product includes Apache 2.0.46 and is available

  NOTE: No IPv6 solution is available at this time.  This Security
        Bulletin will be updated when such becomes available.

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

AVAILABILITY: Complete product bundles are available now on

A. Background
   The Common Vulnerabilities and Exposures project
  <http://cve.mitre.org/> has identified potential vulnerabilities
   in the Apache HTTP Server (CAN-2003-0189, CAN-2003-0245). These
   affect the following HP products on HP-UX releases B.11.00,
   B.11.11 and B.11.22:

    - HPApache/B9416AA and HPApache/B9416BA (all versions)

    - hp-ux apache-based web server products hpuxwsAPACHE and
      hpuxwsApache, v. or earlier.

    Note: The following are not vulnerable:
          HP OpenVMS
          HP NonStop Servers
          HP Tru64 UNIX
          HP Tru64 OpenVMS

B. Recommended solution
   The Apache Software Foundation has released Apache 2.0.46 as
   the best known version fixing the potential vulnerabilities
   mentioned above.

   HP has incorporated Apache 2.0.46 in the following product:

    - hp-ux apache-based web server v. or later,
      available from:

   NOTE: No IPv6 solution is available at this time. This Security
         Bulletin will be updated when such becomes available.

   Check for Apache Installation
   To determine if the Apache web server from HP is installed on
   your system, use Software Distributor's swlist command.  More
   than one version may be present on a single system.

   For example, the results of the command
     swlist -l product | grep -i apache

     HPApache  HP Apache-based Web Server
     hpuxwsAPACHE  A.   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/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/B9416AA or 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, whereas installation over
   a non-HP Apache is NOT supported.

   Removing Apache Installation
   If you prefer to remove Apache from your system rather 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

C. To subscribe to automatically receive future NEW HP Security
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   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
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   In the left most frame select "Maintenance and Support".

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   To -subscribe- to future HP Security Bulletins or other
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   To -review- bulletins already released, select the link
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   NOTE: Using your itrc account security bulletins can be
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   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,
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   The Security Patch Check tool can verify that a security
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   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".

   The PGP key used to sign this bulletin is available from
   several PGP Public Key servers.  The key identification
   information is:

      HP Security Response Team (Security Bulletin signing only)
      Fingerprint =
        6002 6019 BFC1 BC62 F079 862E E01F 3AFC 2D2A 7D59

   If you have problems locating the key please write to
   security-alert@hp.com.  Please note that this key is
   for signing bulletins only and is not the key returned
   by sending 'get key' to security-alert@hp.com.

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 2003 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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Version: PGP 8.0


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