[security bulletin] SSRT051074 Revised - HP-UX Running xterm Local Unauthorized Access

security-alert_at_hp.com
Date: 11/23/05

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    SUPPORT COMMUNICATION - SECURITY BULLETIN

    Document ID: c00555516
    Version: 2

    HPSBUX02075 SSRT051074 Revised - HP-UX Running xterm Local
                                     Unauthorized Access

    NOTICE: The information in this Security Bulletin should be acted
    upon as soon as possible.

    Release Date: 2005-11-11
    Last Updated: 2005-11-22

    Potential Security Impact: Local unauthorized access

    Source: Hewlett-Packard Company,
            HP Software Security Response Team

    VULNERABILITY SUMMARY

    A potential security vulnerability has been identified with HP-UX
    running xterm. The vulnerability could be exploited by a local
    user to gain unauthorized access.

    References: none

    SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
    HP-UX B.11.00, B.11.11, B.11.23.

    BACKGROUND

    To determine if an HP-UX system has an affected version,
    search the output of "swlist -a revision -l fileset"
    for one of the filesets listed below. For affected systems
    verify that the recommended action has been taken.

    AFFECTED VERSIONS

    HP-UX B.11.00
    =============
    X11.X11-RUN-CL
    action: remove PHSS_32109 if installed

    HP-UX B.11.11
    =============
    X11.X11-RUN-CL
    action: remove PHSS_30791 if installed

    HP-UX B.11.11
    =============
    X11.X11-RUN-CL
    action: remove PHSS_33589 if installed

    HP-UX B.11.23
    =============
    X11.X11-RUN-CL
    action: remove PHSS_31833 if installed

    HP-UX B.11.23
    =============
    X11.X11-RUN-CL
    action: remove PHSS_32366 if installed

    END AFFECTED VERSIONS

    RESOLUTION

    Until patches are provided to resolve the issue avoid using the
    potentially vulnerable versions of /usr/bin/X11/xterm.

    One solution is to remove the patches listed in the Background
    section (above). The patches listed are the only patches
    containing the potentially vulnerable xterm.

    An alternative to removing the patches is to use
    /usr/contrib/bin/X11R5/xterm.

    For example:

    cp /usr/bin/X11/xterm /usr/bin/X11/xterm.nosuid
    chmod 555 /usr/bin/X11/xterm.nosuid
    cp /usr/contrib/bin/X11R5/xterm /usr/bin/X11/xterm

     ->Preliminary xterm Binary Files

     ->Preliminary xterm binary files are available to resolve the
     ->issue. These binary files are X11R6 replacements for the
     ->potentially vulnerable versions of xterm, and they contain the
     ->same defect fixes.

     ->Customers who do not require the latest xterm may prefer to
     ->remove the patches listed above instead. Manual action is
     ->required to install the preliminary binary xterm files.

     ->To install the preliminary xterm download README.txt and the
     ->appropriate xterm file via ftp from hprc.external.hp.com
     ->(192.170.19.100).
     ->The ftp account is 'xterm', and the password is 'xterm'.

     ->Brower ftp access:
     ->ftp://xterm:xterm@hprc.external.hp.com/
     ->ftp://xterm:xterm@192.170.19.100/

     ->README.txt contains instructions for installing the
     ->preliminary files.
     ->cksum:
     ->766557324 1630 README.txt
     ->md5 sum:
     ->960cc500dcf9d4c2c72464822bc79c18 README.txt

    MANUAL ACTIONS: Yes - NonUpdate
    Remove the patches listed in the Background section,
    use /usr/contrib/bin/X11R5/xterm,
    - ->or install the preliminary xterm files.

    PRODUCT SPECIFIC INFORMATION

    HP-UX Security Patch Check: Security Patch Check revision B.02.00
    analyzes all HP-issued Security Bulletins to provide a subset of
    recommended actions that potentially affect a specific HP-UX
    system. For more information:
    http://software.hp.com/portal/swdepot/displayProductInfo.do?
    productNumber=B6834AA

    UPDATE HISTORY
    Initial release: 13 November 2005
    Update 1: 22 November 2005 Preliminary xterm files are available.

    Support: For further information, contact normal HP Services
    support channel.

    Report: To report a potential security vulnerability with any HP
    supported product, send Email to: security-alert@hp.com. It is
    strongly recommended that security related information being
    communicated to HP be encrypted using PGP, especially exploit
    information. To get the security-alert PGP key, please send an
    e-mail message as follows:
      To: security-alert@hp.com
      Subject: get key

    Subscribe: To initiate a subscription to receive future HP
    Security Bulletins via Email:
    http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA&
    langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC

    On the web page: ITRC security bulletins and patch sign-up
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        - use Edit Profile to update appropriate sections.

    To review previously published Security Bulletins visit:
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    * The Software Product Category that this Security Bulletin
    relates to is represented by the 5th and 6th characters of the
    Bulletin number in the title:

        GN = HP General SW,
        MA = HP Management Agents,
        MI = Misc. 3rd party SW,
        MP = HP MPE/iX,
        NS = HP NonStop Servers,
        OV = HP OpenVMS,
        PI = HP Printing & Imaging,
        ST = HP Storage SW,
        TL = HP Trusted Linux,
        TU = HP Tru64 UNIX,
        UX = HP-UX,
        VV = HP Virtual Vault

    System management and security procedures must be reviewed
    frequently to maintain system integrity. HP is continually
    reviewing and enhancing the security features of software products
    to provide customers with current secure solutions.

    "HP is broadly distributing this Security Bulletin in order to
    bring to the attention of users of the affected HP products the
    important security information contained in this Bulletin. HP
    recommends that all users determine the applicability of this
    information to their individual situations and take appropriate
    action. HP does not warrant that this information is necessarily
    accurate or complete for all user situations and, consequently, HP
    will not be responsible for any damages resulting from user's use
    or disregard of the information provided in this Bulletin. To the
    extent permitted by law, HP disclaims all warranties, either
    express or implied, including the warranties of merchantability
    and fitness for a particular purpose, title and non-infringement."

    (c)Copyright 2005 Hewlett-Packard Development Company, L.P.
    Hewlett-Packard Company shall not be liable for technical or
    editorial errors or omissions contained herein. The information
    provided is provided "as is" without warranty of any kind. To the
    extent permitted by law, neither HP nor its affiliates,
    subcontractors or suppliers will be liable for incidental, special
    or consequential damages including downtime cost; lost profits;
    damages relating to the procurement of substitute products or
    services; or damages for loss of data, or software restoration.
    The information in this document is subject to change without
    notice. Hewlett-Packard Company and the names of Hewlett-Packard
    products referenced herein are trademarks of Hewlett-Packard
    Company in the United States and other countries. Other product
    and company names mentioned herein may be trademarks of their
    respective owners.

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