SSRT3623 Security Vulnerabilities in Apache HTTP Server

From: Security Alert (secure_at_cup.hp.com)
Date: 09/05/03 

Date: 5 Sep 2003 06:16:30 -0600

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Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0309-278
Originally issued: 03 Sept 2003
SSRT3623 Security Vulnerabilities in Apache HTTP Server
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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.

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PROBLEM: 1. Certain sequences of per-directory renegotiations and
            the SSLCipherSuite directive being used to upgrade
            from a weak ciphersuite to a strong one could result
            in the weak ciphersuite being used in place of the
            strong one.
            More details are available at:

   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0192

         2. Certain errors returned by accept() on rarely
            accessed ports could cause temporal denial of service,
            due to a bug in the prefork MPM.

            More details are available at:
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0253

         3. Denial of service was caused when target host is IPv6
            but ftp proxy server can't create IPv6 socket.

            More details are available at:
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0254

         4. The server would crash when going into an infinite
            loop due to too many subsequent internal redirects
            and nested subrequests.

            More details are available at:
   http://nagoya.apache.org/bugzilla/show_bug.cgi?id=19753

IMPACT: Potential Denial of Service

PLATFORM: HP9000 Servers running HP-UX release 11.11 with
          versions of the following products are affected, and
          represented as:
          product-name, version (product-tag/bundle-tag)

     - hp apache-based web server (with IPv6 support), 2.0.43.04
       or earlier (HPApache/B9416BA)
       This product includes Apache 2.0.43.

     - hp-ux apache-based web server(with IPv6 support),
       v.1.0.00.01 or earlier (hpuxwsAPACHE/hpuxwsApache)
       This product includes Apache 2.0.43.

SOLUTION: For HP-UX releases 11.11 download new HP Apache product
          from <http://www.software.hp.com/>:

          For HPApache/B9416AA, HPApache/B9416BA and
              hpuxwsAPACHE/hpuxwsApache download the update.

        - hp-ux apache-based web server (with IPv4)
          NO actions required

        - hp-ux apache-based web server(with IPv6 support),
          v.1.0.07.01 or later (hpuxwsAPACHE/hpuxwsApache)
          This product includes Apache 2.0.46.
       http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/
            cgi/displayProductInfo.pl?productNumber=HPUXWSSUITE

MANUAL ACTIONS: Yes - Update
                Install the product containing the fix.
                For customers with 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
               <http://www.software.hp.com/>

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A. Background
   The Common Vulnerabilities and Exposures project
   <http://cve.mitre.org/> has identified potential
   vulnerabilities in the Apache HTTP Server (CAN-2003-0192,
   CAN-2003-0253, and CAN-2003-0254). It affects the
   following HP product numbers / versions on HP-UX
   releases 11.11:

   - hp apache-based web server, 2.0.43.04 (with IPv6 support)
     or earlier (HPApache/B9416BA)

   - hp-ux apache-based web server (with IPv6 support),
     v.1.0.05.01 or earlier (hpuxwsAPACHE/hpuxwsApache)

    AFFECTED VERSIONS:

    The affected filesets are: (product.fileset)
    HPApache.APACHE2 2.0.36 and subsequent for IPv6
    hpuxwsAPACHE.APACHE2 2.0.43 and subsequent for IPv6

    fix: revision 2.0.47 or subsequent for IPv6

    END AFFECTED VERSIONS

B. Recommended solution
   The Apache Software Foundation has released Apache 2.0.47 as
   the best known version that fixes the problems identified in
   the above mentioned issues.

   For customers using HPApache/B9416BA and hpuxwsAPACHE /
   hpuxwsApache, HP has incorporated Apache 2.0.47 in the
   following product:
   - hp-ux apache-based web server v.1.0.07.01 or later
      http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
             displayProductInfo.pl?productNumber=HPUXWSSUITE

   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

     HPApache 2.0.39.01.02 HP Apache-based Web Server
     hpuxwsAPACHE A.1.0.05.01 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/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, while installation over a
   non-HP Apache is NOT supported.

   Removing Apache Installation
   ----------------------------
   If you rather remove Apache from your system 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
        hpapache2conf
        hpws_apacheconf

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.

   NOTE: Using your itrc account security bulletins can be
         found here:
   http://itrc.hp.com/cki/bin/doc.pl/screen=ckiSecurityBulletin

   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. Please note that installing the patches
   listed in the Security Patch Matrix will completely
   implement a security bulletin _only_ if the MANUAL ACTIONS
   field specifies "No."

   The Security Patch Check tool can verify that a security
   bulletin has been implemented on HP-UX 11.XX systems providing
   that the fix is completely implemented in a patch with no
   manual actions required. The Security Patch Check tool cannot
   verify fixes implemented via a product upgrade.

   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".

   The PGP key used to sign this bulletin is available from
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      2D2A7D59
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D. To report new security vulnerabilities, send email to

   security-alert@hp.com

   Please encrypt any exploit information using the
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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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--
Yours truly,
HP S/W Security Team
WTEC Cupertino, California
Return-Path: secure@cup.hp.com
Reply-to: security-alert@hp.com
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