AUSCERT External Security Bulletin Redistribution

  SSRT3642 Potential Security Vulnerabilities Apache web server on HP-UX
                            VVOS and Webproxy.
                              10 October 2003


        AusCERT Security Bulletin Summary

Product:                Virtualvault 4.5
                        Virtualvault 4.6
                        Webproxy 2.0
Publisher:              Hewlett-Packard
Operating System:       HP-UX release B.11.04
Platform:               HP9000
Impact:                 Denial of Service
Access Required:        Remote

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Hash: SHA1

Originally issued: 07 October 2003
SSRT3642 Potential Security Vulnerabilities Apache web server on
         HP-UX VVOS and Webproxy.

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. Potential Apache web server crash when it goes into
            an infinite loop due to too many subsequent internal
            redirects and nested subrequests. (VU#379828)

         2. No de-allocation of file descriptors while servicing
            CGI scripts through child processes.

IMPACT:   Potential crash of Apache web server.

PLATFORM: HP9000 Servers running HP-UX release B.11.04 (VVOS)
          with Virtualvault A.04.50 or Virtualvault A.04.60

SOLUTION: For Virtualvault and Webproxy releases install
          recommended patches.

           Virtualvault 4.5:
           PHSS_29541  s700_800 11.04 Virtualvault 4.5 IWS Update
           PHSS_29545  s700_800 11.04 Virtualvault 4.5 OWS update

           Virtualvault 4.6:
           PHSS_29542  s700_800 11.04 Virtualvault 4.6 IWS update
           PHSS_29546  s700_800 11.04 Virtualvault 4.6 OWS update

           Webproxy 2.0:
           PHSS_29547  s700_800 11.04 Webproxy server 2.0 update


AVAILABILITY: All patches are available now on <itrc.hp.com>.
 A. Background
    Virtualvault 4.5, Virtualvault 4.6, Webproxy 2.0: all use
    Apache 1.3.27.

    The Apache Web Server Project
      <http://www.apache.org/dist/httpd/Announcement.html> has
    identified potential vulnerabilities in the Apache HTTP

     The following is a list by HP-UX revision 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.

     The affected filesets are: (product.fileset)

     Virtualvault A.04.50

     Virtualvault A.04.60

 HP Webproxy A.02.00

     fix: install
         Virtualvault 4.5: PHSS_29541 PHSS_29545 or subsequent
         Virtualvault 4.6: PHSS_29542 PHSS_29546 or subsequent
         Webproxy 2.0:     PHSS_29547 or subsequent


    The Apache web server version 1.3.28 incorporates fix for the
    following problems:

     1. VU#379828: The server could crash when going into an
        infinite loop due to too many subsequent internal
        redirects and nested subrequests.

     2. No de-allocation of file descriptors while servicing CGI
        scripts through child processes.

    NOTE: This problem does not impact HP NonStop Servers,
          HP OpenVMS, nor the HP Tru64 UNIX/Trucluster Server.

 B. Recommended solution

       Install HP Apache versions 1.3.28

       The fixes for the following Virtualvault and Webproxy
       releases are available with the following patches:

       Virtualvault 4.5:
           PHSS_29541: s700_800 11.04 Virtualvault 4.5 IWS Update
           PHSS_29545: s700_800 11.04 Virtualvault 4.5 OWS update

       Virtualvault 4.6:
           PHSS_29542: s700_800 11.04 Virtualvault 4.6 IWS update
           PHSS_29546: s700_800 11.04 Virtualvault 4.6 OWS update

        Webproxy 2.0:
           PHSS_29547  s700_800 11.04 Webproxy server 2.0 update

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    The PGP key used to sign this bulletin is available from
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       HP Security Response Team (Security Bulletin signing only)
       Fingerprint =
         6002 6019 BFC1 BC62 F079 862E E01F 3AFC 2D2A 7D59

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 D. To report new security vulnerabilities, send email to


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(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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