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             AUSCERT External Security Bulletin Redistribution

        ESB-2003.0603 -- HEWLETT-PACKARD COMPANY SECURITY BULLETIN:
                              HPSBUX0308-275
              SSRT3618 Security Vulnerability in HP-UX shells
                              28 August 2003

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

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

Product:                sh-posix
                        ksh
                        csh
Publisher:              Hewlett-Packard
Operating System:       HP-UX 11.11
                        HP-UX 11.00
                        HP-UX 10.20
                        UNIX
Impact:                 Overwrite Arbitrary Files
Access Required:        Existing Account
CVE Names:              CAN-2000-1134

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 Source: HEWLETT-PACKARD COMPANY
 SECURITY BULLETIN: HPSBUX0308-275
 Originally issued: 26 August 2003
 SSRT3618 Security Vulnerability in HP-UX shells
 -----------------------------------------------------------------

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: Shells improperly manage files during operations.

IMPACT:  Possible increase of privilege, filesystem damage,
         denial of service.

PLATFORM: HP9000 servers running HP-UX versions B.10.20, B.11.00,
          B.11.11.

SOLUTION:  Apply the appropriate patch from itrc.hp.com:

           PHCO_27345    B.11.11    sh-posix
           PHCO_27019    B.11.11    ksh
           PHCO_26561    B.11.11    csh

           PHCO_27344    B.11.00    sh-posix
           PHCO_27418    B.11.00    ksh
           PHCO_27763    B.11.00    csh

           PHCO_27804    B.10.20    sh-posix
           PHCO_27803    B.10.20    ksh
           PHCO_27819    B.10.20    csh

MANUAL ACTIONS: No

AVAILABILITY:  All patches are available now on itrc.hp.com
 -----------------------------------------------------------------
 A. Background
    Many system modules create insecure temporary files with a
    name based on a process id, and write subsequent input
    to that file.  Improper error checking of various sytem
    calls results in a vulnerability.

    Reference:
    CERT-VN:VU#10277 URL:http://www.kb.cert.org/vuls/id/10277
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2000-1134

    This problem also affects HP Tru64 UNIX
       See SSRT1-41U, SSRT0742U, SSRT0759U

    NOTE: This problem does not impact HP NonStop Servers

    AFFECTED VERSIONS
    The following is a list by HP-UX revision of
    affected filesets and the fileset revision or
    patch containing the fix.  To determine if a
    system has an affected version, search the
    output of "swlist -a revision -l fileset"
    for an affected fileset, then determine if
    a fixed revision or the applicable patch is
    installed.

    HP-UX B.11.11
    =============
    OS-Core.UX-CORE
    fix: install patches
           PHCO_27345    B.11.11    sh-posix
           PHCO_27019    B.11.11    ksh
           PHCO_26561    B.11.11    csh

    HP-UX B.11.00
    =============
    OS-Core.UX-CORE
    fix: install patches
           PHCO_27344    B.11.00    sh-posix
           PHCO_27418    B.11.00    ksh
           PHCO_27763    B.11.00    csh

    HP-UX B.10.20
    =============
    OS-Core.UX-CORE
    fix: install patches
           PHCO_27804    B.10.20    sh-posix
           PHCO_27803    B.10.20    ksh
           PHCO_27819    B.10.20    csh


    END AFFECTED VERSIONS

 B. Recommended solution

    Retrieve and install all three the patches for each release
    from itrc.hp.com:
           PHCO_27345    B.11.11    sh-posix
           PHCO_27019    B.11.11    ksh
           PHCO_26561    B.11.11    csh

           PHCO_27344    B.11.00    sh-posix
           PHCO_27418    B.11.00    ksh
           PHCO_27763    B.11.00    csh

           PHCO_27804    B.10.20    sh-posix
           PHCO_27803    B.10.20    ksh
           PHCO_27819    B.10.20    csh

 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
       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
    for signing bulletins only and is not the key returned
    by sending 'get key' to security-alert@hp.com.


 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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