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Category:   Application (Generic)  >   Common Desktop Environment Vendors:   Open Group, The
(HP Issues Fix) CDE libDTHelp Buffer Overflow Lets Local Users Execute Arbitrary Code With Root Privileges
SecurityTracker Alert ID:  1008216
SecurityTracker URL:  http://securitytracker.com/id/1008216
CVE Reference:   CVE-2003-0834   (Links to External Site)
Date:  Nov 18 2003
Impact:   Execution of arbitrary code via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.0
Description:   A buffer overflow vulnerability was reported the Common Desktop Environment (CDE) libDTHelp library. A local user can gain root privileges on the system.

It is reported that a local user can set a specially crafted environment variable (DTHELPUSERSEARCHPATH) to execute arbitrary code with root privileges when the dtHelp application is initialized or when applications linked to libtDtHelp are initialized.

Kevin Kotas from Computer Associates Intl. eTrust eVM is credited with reporting this flaw.

In August 2004, iDEFENSE reported that the LOGNAME environment variable is also not properly validated.

Impact:   A local user can execute arbitrary code with root privileges.
Solution:   The vendor has released patches, available at:

http://itrc.hp.com

B.11.00 PHSS_30010
B.11.11 PHSS_30011

Vendor URL:  www.opengroup.org/cde/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  UNIX (HP/UX)
Underlying OS Comments:  11.00, 11.11

Message History:   This archive entry is a follow-up to the message listed below.
Nov 5 2003 CDE libDTHelp Buffer Overflow Lets Local Users Execute Arbitrary Code With Root Privileges



 Source Message Contents

Subject:  HP-UX security bulletins digest


Document ID:  HPSBUX0311-297
Date Loaded:  20031116
      Title:  SSRT3657 CDE libDtHelp

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

 -----------------------------------------------------------------
 Source: HEWLETT-PACKARD COMPANY
 SECURITY BULLETIN: HPSBUX0311-297
 Originally issued: 16 November 2003
 SSRT3657 CDE libDtHelp
 -----------------------------------------------------------------

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: CDE libDtHelp has a potential buffer overflow.

IMPACT: Potential increase in privilege, denial of service.

PLATFORM:   HP-HX B.11.00, B.11.11

SOLUTION: Install the appropriate patch:

          B.11.00   PHSS_30010
          B.11.11   PHSS_30011

MANUAL ACTIONS: No

AVAILABILITY:  The patches are available now on
               <http://itrc.hp.com>.
 -----------------------------------------------------------------
 A. Background

     This problem has been reported by CERT/cc as VU#575804:

       <http://www.kb.cert.org/vuls/id/575804>

     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
     =============
     CDE.CDE-SHLIBS
     fix: install PHSS_30010 or subsequent

     HP-UX B.11.11
     =============
     CDE.CDE-SHLIBS
     fix: install PHSS_30011 or subsequent


     END AFFECTED VERSIONS


 B. Recommended solution

    Download and install the appropriate patch:

          B.11.00   PHSS_30010
          B.11.11   PHSS_30011

    The patches are available now on <http://itrc.hp.com>.


 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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=H9KR
-----END PGP SIGNATURE-----
-----End of Document ID:  HPSBUX0311-297--------------------------------------

 
 


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