Security Vulnerability in Apache Web Servers (rev.5)

Security Vulnerability in Apache Web Servers (rev.5)

Post by Security Ale » Wed, 24 Jul 2002 22:44:46



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   **REVISED 05**
   HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0207-197
   Originally issued: 01 July 2002
   Last revision:     23 July 2002
 -----------------------------------------------------------------

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:  A remotely exploitable potential for vulnerability in
          handling of large data chunks in Apache-based web servers.

PLATFORM: HP9000 Servers running HP-UX release 11.00, 11.04, 11.11
          11.20, and 11.22 with the HP Apache product installed.

DAMAGE:   Potential for increased privilege, DoS, or execution of
          arbitrary code.

**REVISED 05**
SOLUTION: For HP-UX releases 11.00, 11.11, 11.20 and 11.22 download
          new product bundles from the ftp site below.
          For only HP-UX release 11.04 (VV-OS): apply patches
                PHSS_27361     - for VV 4.6 release,
                PHSS_27371     - for VV 4.5 release.
- --->>     For HP-UX release 11.11 running IPv6 download the new
- --->>     product bundle from the ftp site below.

MANUAL ACTIONS: Install repaired binary.

AVAILABILITY: Complete product bundles are available now for 11.00
              and 11.11 are available for PA-RISC architecture
              platforms via ftp at hprc.external.hp.com  (see below
              for account details).
              HP-UX 11.04 (VV-OS) patches are available now at
              itrc.hp.com

CHANGE SUMMARY: Rev.01 -  Do not install the bundle on NNM.
                Rev.02 -  Added Virtualvault patches.
                Rev.03 -  Re-released 1.3.26 bits due to an update
                          deficiency and other minor problems.
                Rev.04 -  Added IPF versions.
- --->>           Rev.05 -  Added IPv6 PA-RISC version.
 ------------------------------------------------------------------
A. Background
    The CERT Advisory CA-2002-17 regarding Apache affects the
    following HP product numbers:

    B9415AA Apache 1.3.x  PA-RISC HP-UX releases 11.00 and 11.11
    B9416AA Apache 2.x    PA-RISC HP-UX releases 11.00 and 11.11
    B9415AA Apache 1.3.x  IPF HP-UX releases 11.20 and 11.22
    B9416AA Apache 2.x    IPF HP-UX releases 11.20 and 11.22
- -->>B9416BA Apache 2.x    IPv6 PA_RISC HP-UX release 11.11

     HP Apache 1.3.26 (PA-RISC)
     installs into /opt/apache and /opt/tomcat
     disk space: 55-65 MB
     documents:  /opt/apache/htdocs/doc

     HP Apache 2.0.39 (PA-RISC)
     installs into /opt/hpapache2
     disk space: 80-90 MB
     documents:  /opt/hpapache2/hp_apache_docs

     HP Apache 1.3.26 (IPF)
     installs into /opt/apache and /opt/tomcat
     disk space: 65-75 MB
     documents:  /opt/apache/hp_apache_docs

     HP Apache 2.0.39 (IPF)
     installs into /opt/hpapache2
     disk space: 80-90 MB
     documents:  /opt/hpapache2/hp_apache_docs

- --->>HP Apache 2.0.39 IP version 6 (PA-RISC)
     installs into /opt/hpapache2
     disk space: 80-90 MB
     documents:  /opt/hpapache2/hp_apache_docs

      Before updating, make sure to stop your 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.

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

    An advisory has been issued for HP Compaq systems.  Please
    refer to HP Compaq SSRT2253, which says in part:

      CSWS Secure Web Server for HP Tru64 UNIX and HP OpenVMS
      "Potential Apache Web Server Chunk Handling Vulnerability"

      Patches are available for CSWS for HP Tru64 UNIX at:
        http://tru64unix.compaq.com/internet/download.htm#sws_v591

      Patches are available for CSWS for HP OpenVMS at:
        http://www.openvms.compaq.com/openvms/products/ips/apache/
            +csws_patches.html

B. Fixing the problem

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

     The Virtualvault product (also known as HP-UX 11.04) has
     patches for its 4.5 and 4.6 releases. The patch for VV 4.6
     updates the outside web server to the Apache 1.3.26 version
     from the Apache 1.3.22 version shipped with the VV 4.6 release.
     For the VV 4.5 patch, the security fix from the Apache 1.3.26
     version was backported to the 1.3.19 version per the Apache
     Group's patch for httpd 1.2.0-1.3.22.

     Both of these Virtualvault patches are available in itrc.hp.com.
                PHSS_27361   -   for VV 4.6 release.
                PHSS_27371   -   for VV 4.5 release.

      The fixes for both PA-RISC and IPF (Itanium Processor Family)
      versions are in the form of new product bundles, instead of
      patches.  An ftp server account has been created to enable
      timely downloading of these binaries.

     System:    hprc.external.hp.com  (192.170.19.51)
     Login:     apache
     Password:  apache

    FTP Access: ftp://apache:apa...@hprc.external.hp.com/
            or: ftp://apache:apa...@192.170.19.51/

     NOTE: If your Apache 1.3.26.00.09 binary was downloaded since
           this Security Bulletin was orginally issued you may want
           to repeat that retrieval operation for the following
fixes:
           1) Saving of configuration files (i.e. httpd.conf) during
an
              update.
           2) Automatically starting HP Apache after a reboot.
           3) Missing tuning notes

          This does not affect the security matter.  We apologize for
           the inconvenience.

          The new Apache 1.3.26.01.00 bits (now labelled as .depot
          file for this version) is available now the directory
          Apache1.3.26.01.

   Retrieve the binaries and verify the correct size, cksum output
   and MD5 fingerprint.

   Version     Product    HP-UX      cksum(1) output     MD5 output
               number     Release    and byte count
   _________________________________________________________________
    PA-RISC
   Apache 2.0.39
               B9416AA   11.00 and 11.11
                                   4267700545 27197440
                                     098CFC257C9E6DF2E90176A57BB8F3A3
    IPF
   Apache 2.0.39.00.11
               B9416AA   11.20 and 11.22
                                   2466740859 63201280
                                     5B612A6E8A06F93C08E8156A378D4687

    PA-RISC
   Apache 1.3.26.01.00
               B9415AA   11.00 and 11.11
                                   2357077957 60272640
                                     48321024D02B6DCE0D64B03F474CFAA4

     IPF
    Apache 1.3.26.00.07
               B9415AA   11.20 and 11.22
                                   1167932414 71034880
                                     C25B5CDCC9EBBD6B70490F91554B40D7
**REVISED 05**
- -->>  PA-RISC
- -->> Apache 2.0.39 IPv6
- -->>           B9416BA   11.11
- -->>                               3237771423 27299840

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 at:

       http://itrc.hp.com

    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.

    or

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

    The security patch matrix is also available via anonymous
    ftp:

    ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/

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

D. To report new security vulnerabilities, send email to

    security-al...@hp.com

   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-al...@hp.com.

   Permission is granted for copying and circulating this
   Bulletin to Hewlett-Packard (HP) customers (or the Internet
   community) for the purpose of alerting them to problems,
   if and only if, the Bulletin is not edited or changed in
   any way, is attributed to HP, and provided such reproduction
   and/or distribution is performed for non-commercial purposes.

   Any other use of this information is prohibited. HP is not
   liable for any misuse of this information by any third party.
 ________________________________________________________________

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

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