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             AUSCERT External Security Bulletin Redistribution

ESB-2003.0717 -- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0310-290
         SSRT3622 Potential Security Vulnerabilities in Bind v920
                              14 October 2003

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

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                Bind v920
Publisher:              Hewlett-Packard
Operating System:       HP-UX B.11.22
                        HP-UX B.11.11
                        HP-UX B.11.00
Platform:               HP9000
Impact:                 Denial of Service
Access Required:        Remote
CVE Names:              CAN-2003-0543 CAN-2003-0544 CAN-2003-0545

Ref:                    AL-2003.18

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 -----------------------------------------------------------------
 Source: HEWLETT-PACKARD COMPANY
 SECURITY BULLETIN: HPSBUX0310-290
 Originally issued: 08 October 2003
 SSRT3622 Potential Security Vulnerabilities in Bind v920
 -----------------------------------------------------------------

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. 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 releases B.11.00, B.11.11,
          and B.11.22, only with the BINDv920 installed.

SOLUTION: Until a product upgrade is available, download and
          install the appropriate depot from the ftp site
          (see below).

      Bind9.2 for B.11.00         BIND920.11.00.depot
      Bind9.2 for B.11.11         BIND920.11.11.depot
      Bind9.2 patch for B.11.22   PHNE_29859.depot

MANUAL ACTIONS: Yes - Update
                Install the product containing the fix.

AVAILABILITY: The depots or patch are available now, via ftp
              (see below).
              This bulletin will be updated when a product
              upgrade is available.
 -----------------------------------------------------------------
 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.


     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.

     HP-UX B.11.00
     =============
     BINDv920.INETSVCS-BIND
     fix: install revision B.11.00.01.002 from BIND920.11.00.depot

     HP-UX B.11.11
     =============
     BINDv920.INETSVCS-BIND
     fix: install revision B.11.11.01.004 from BIND920.11.11.depot

     HP-UX B.11.22
     =============
     InternetSrvcs.INETSVCS2-RUN
     fix: install PHNE_29859.depot

     END AFFECTED VERSIONS


 B. Recommended solution
    Note: These fixes should be applied to all systems using
    DNS, including those systems with client programs only.

    Notes on Bind Versions (B.11.00 and B.11.11)
    =============================================

    Bind is available on B.11.00 and B.11.11 as part of
    the base operating system and as a web upgrade.
    Both versions (base os and web upgrade) may be
    installed on a system simultaneously.  Only one
    version can be active.  The active version can
    be changed via a script.

    The base os versions are updated via patches.  The
    web upgrade versions are updated by installing a
    later web upgrade.  The web upgrade versions are
    not patched, instead are simply newer versions.

    If a web upgrade version is active it is not possible
    to patch the base os version.  It is necessary to
    switch to the base os version with the following
    command before applying the patch:

     /usr/bin/enable_inet -r bind

    If you are running a web upgrade version and do not
    intend to re-enable the base os version, it is not
    necessary to patch the base os version.  However,
    since the base os version can be re-enabled with
    the script, you may want to patch the base os version
    even though it is not active.  Similarly, if you have
    installed a web upgrade version and have switched
    back to the base os version, you may want to update
    to the latest web upgrade version or use swremove(1)
    to remove the web upgrade version entirely.

    Identifying the Active Version (B.11.00/B.11.11)
    ================================================

    Execute the following command:

     what /usr/sbin/named | grep named

    The bind version will be on the named line.
    For example:

     named 9.2.0 Thu Jul 18 11:58:39 GMT 2002


    Identifying the Web Upgrade Version (B.11.00/B.11.11)
    =====================================================

    If the file /usr/contrib/bind/usr/sbin/named exists,
    execute the following:

     what /usr/contrib/bind/usr/sbin/named | grep named

    The bind version will be on the named line.
    If the version is anything other than 9.2.0, this bulletin
    does not apply to the system being examined.

    Until a product upgrade is available, download and install
    install the appropriate depot from the ftp site.

      1. Download the appropriate .depot.gz from the ftp site.
         (This file is temporary and will be deleted when a
         product upgrade is available from itrc.hp.com).

        System:    hprc.external.hp.com  (192.170.19.51)
        Login:     bind920
        Password:  bind920

        FTP Access: ftp://bind920:bind920@hprc.external.hp.com/
                or: ftp://bind920:bind920@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
     ==================================================
      2. To fix the problem, copy the appropriate depot file to
         a protected directory and unpack it.

     cksum:
           1691634068  8498721  BIND920.11.00.depot.gz
           2647615337  8647352  BIND920.11.11.depot.gz
           1640049049 12927378  PHNE_29859.depot.gz

     md5:
         BIND920.11.00.depot.gz
               8AEF8700958CDAE6D50D0FCFE6B30FB6
         BIND920.11.11.depot.gz
               0067560CA4506159C9D5AB9E91166916
         PHNE_29859.depot.gz
               0B306B5E4353D157F0120B719D8D38D3

      3. Install the appropriate depot using swinstall(1).

 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
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    "Register" button at the left to create a login, in order to
    gain access to many areas of the ITRC.  Remember to save the
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    In the left most frame select "Maintenance and Support".

    Under the "Notifications" section (near the bottom of
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    To -subscribe- to future HP Security Bulletins or other
    Technical Digests, click the check box (in the left column)
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    or

    To -review- bulletins already released, select the link
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    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
       HP Security Response Team (Security Bulletin signing only)
       <security-alert@hp.com>
       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
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 D. To report new security vulnerabilities, send email to

    security-alert@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-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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