SSRT3556 /usr/lbin/rwrite

From: Security Alert (secure_at_cup.hp.com)
Date: 01/20/04

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     -----------------------------------------------------------------
     Source: HEWLETT-PACKARD COMPANY
     SECURITY BULLETIN: HPSBUX0401-312
     Originally issued: 20 January 2004
     SSRT3556 /usr/lbin/rwrite
     -----------------------------------------------------------------

    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: A locally exploitable buffer overflow has been
              identified in /usr/lbin/rwrite.

    IMPACT: Potential increase in privilege.

    PLATFORM: HP-UX B.11.00 and B.11.11.

    SOLUTION: Apply the appropriate patch:
              PHCO_29208 for HP-UX 11.00
              PHCO_29209 for HP-UX 11.11

    MANUAL ACTIONS: No

    AVAILABILITY: All patches are available now on <itrc.hp.com>.
     -----------------------------------------------------------------
     A. Background
        A locally exploitable buffer overflow in /usr/lbin/rwrite has
        been discovered and repaired. It can cause a core dump with a
        segmentation violation.

        The SSRT thanks 'bt' of www.delfi.lt for reporting this
        potential vulnerability to HP.

        NOTE: This problem does not impact HP NonStop Servers,
              HP Tru64 UNIX/TruCluster Server, nor HP OpenVMS.

         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
         =============
         PrinterMgmt.LP-SPOOL
         fix: install PHCO_29208 or subsequent.

         HP-UX B.11.11
         =============
         PrinterMgmt.LP-SPOOL
         fix: install PHCO_29209 or subsequent.

         END AFFECTED VERSIONS

     B. Recommended solution
        Download from <itrc.hp.com> the appropriate patch mentioned
        above.

        Please note the Special Installation Instructions in the
        patch documentation:

          Special Installation Instructions:
              Run /usr/sbin/lpshut before the installation of this
              patch and run /usr/sbin/lpsched after installing the
              patch.

        No reboot is required. These patches completely solve the
        identified problem.

     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 2004 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
    

  • Next message: Snoopy_: "Re: Question on SSH configuration in a cluster environment."

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