SSRT3622 Potential Security Vulnerabilities in HP-UX AAA Server

From: Security Alert (secure_at_cup.hp.com)
Date: 10/08/03 

Date: 8 Oct 2003 09:16:47 -0600

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Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0310-286
Originally issued: 07 Oct 2003
SSRT3622 Potential Security Vulnerabilities in HP-UX AAA 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 ASN.1 encodings that are rejected as invalid
            by the parser can trigger a bug in the deallocation
            of the corresponding data structure, corrupting the
            stack. This can be used as a denial of service
            attack. It is currently unknown whether this can be
            exploited to run malicious code. This issue does not
            affect OpenSSL 0.9.6.

            More details are available at:
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545

         2. Unusual ASN.1 tag values can cause an out of bounds
            read under certain circumstances, resulting in a
            denial of service vulnerability.
            More details are available at:
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544

         3. A malformed public key in a certificate will crash
            the verify code if it is set to ignore public key
            decoding errors. Exploitation of an affected
            application would result in a denial of service
            vulnerability.

         4. Due to an error in the SSL/TLS protocol handling,
            a server will parse a client certificate when one is
            not specifically requested.

IMPACT: Potential Denial of Service

PLATFORM: HP9000 Servers running HP-UX release B.11.00, B.11.11
          with HP-UX AAA Server, A.06.01.02 or earlier,
          (AAAServer/T1428AA)
          This product included OpenSSL 0.9.7b.

SOLUTION: For HP-UX releases B.11.00, B.11.11, download new
          HP-UX AAA Server product from the ftp site
          (see below for details).

          For AAAServer/T1428AA download the following:

          - HP-UX AAA Server
            A.06.01.02.04 or later (AAAServer)
            This product includes OpenSSL 0.9.7b + patches.

MANUAL ACTIONS: Yes - Update
            Install the product containing the fix.
            Remove AAAServer (T1428AA) and migrate to
            HP-UX AAA Server A.06.01.02.04 or later.

AVAILABILITY: Complete product bundles are available from
              the ftp site (see below for details).

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A. Background
   An SSL/TLS testing suite developed by the NISCC (National
   Infrastructure Security Co-Ordination Centre in the UK) has
   identified ASN.1 parsing vulnerabilities in OpenSSL.

   The HP-UX AAA Server (T1428AA) is affected by latest OpenSSL
   vulnerabilities.

     AFFECTED VERSIONS
     ==================

     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)
     ==================
     HP-UX B.11.00
     HP-UX B.11.11
     AAAServer
     fix: install revision A.06.01.02.04 or subsequent

     END AFFECTED VERSIONS

B. Recommended solution
   For customers using the HP-UX AAA Server (T1428AA)
   revision A.06.01.02 and earlier download depots from:

        System: hprc.external.hp.com (192.170.19.51)
        Login: acubed
        Password: Acubed1

        FTP Access: ftp://acubed:Acubed1@hprc.external.hp.com/
                or: ftp://acubed:Acubed1@192.170.19.51/
                or: ftp hprc.external.hp.com

        Note: There is an ftp defect in IE5 that may result in
               a browser hang. To work around this:
        - Select Tools -> Internet Options -> Advanced
        - Un-check the option:
                  [ ] Enable folder view for FTP sites

    ==================================================
    To fix the problem:

    1. Determine the affected version.
    2. Download and verify the cksum or md5 sum.
    3. Remove HP-UX AAA Server (T1428AA)
    4. Install the appropriate HP-UX AAA Server depot.

     cksum:
            64192605 10547857 T1428AA_A6124_11.00.depot.tar.gz
            55905138 10548515 T1428AA_A6124_11.11.depot.tar.gz
     md5:
          DE4E6B8937A4981D1982C364221959E5
                              T1428AA_A6124_11.00.depot.tar.gz
          99E7375C05AD6F4A4D51F4E2BC57A04F
                              T1428AA_A6124_11.11.depot.tar.gz

         The fix requires removing AAAServer (T1428AA) from
         the system and migrating to HP-UX AAA Server
         A.06.01.02.04 or later.

   Check for AAA Installation
   --------------------------
   To determine if the HP-UX AAA Server is installed on
   your system, use Software Distributor's swlist command.

   For example, the results of the command
     swlist -l product | grep -i AAA might show:

   AAAServer A.06.01.02 AAA Server

   Stop HP-UX AAA Server
   ---------------------
   Before updating, make sure to stop any previous HP-UX AAA
   Server binary. Otherwise, the previous binary will continue
   running, preventing the new one from starting, although the
   installation may be successful.

   After determining which HP-UX AAA Server is installed, stop
   the process with the following command:

    kill `cat /var/opt/aaa/run/radiusd.pid | awk '{print $1}'`

    Stop any active tomcat processes using the following command:

    /opt/hpws/tomcat/bin/shutdown.sh

   Download and Install HP-UX AAA Server
   -----------------------------
   - Download HP-UX AAA Server depot file from the temporary ftp
     site using the previously mentioned links.
   - Unzip and extract the tar file.
   - Verify successful download by comparing the cksum/md5 with
     the value specified herein.
   - Register the depot using "swreg" and install using the
     "swinstall" SD commands.
   - Remove AAAServer (T1428AA) and migrate to
     HP-UX AAA Server A.06.01.02.04 or later.

    Installation of this new version of HP-UX AAA Server
    over an existing HP-UX AAA Server installation is supported,
    while installation over any non-HP AAA Server is NOT
    supported.

   Removing an HP-UX AAA Server Installation
   ----------------------------
   If you rather remove HP-UX AAA Server from your system than
   install a newer version to resolve the security problem, use
   both Software Distributor's "swremove" command.

   Note: Before executing swremove, stop HP-UX AAA Server and
   the active tomcat processes.

   Remove the HP-UX AAA Server using SD command: swremove T1428AA

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
   several PGP Public Key servers. The key identification
   information is:

      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
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