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Category:   Application (Generic)  >   Common Desktop Environment Vendors:   Open Group, The
(HP Issues Fix for Tru64) CDE libDTHelp Buffer Overflow Lets Local Users Execute Arbitrary Code With Root Privileges
SecurityTracker Alert ID:  1008366
SecurityTracker URL:  http://securitytracker.com/id/1008366
CVE Reference:   CVE-2003-0834   (Links to External Site)
Date:  Dec 3 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:   HP has released an Early Release Patch (ERP) for Tru64.

HP Tru64 UNIX V5.1
PREREQUISITE: HP Tru64 UNIX with PK6 (BL20) installed
ERP Kit Name: T64KIT0020835-V51B20-ES-20031124
Kit Location:

http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=T64KIT0020835-V51B20-ES-20031124

See the Source Message for important information about the ERP.

Vendor URL:  www.opengroup.org/cde/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  UNIX (Tru64)
Underlying OS Comments:  5.1

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:  Security Bulletin SSRT3657 - Tru64 UNIX CDE libdthelp.so potential privileged access and DoS


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

SECURITY BULLETIN

REVISION: 1

SSRT3657-Tru64 UNIX CDE libdthelp.so potential privileged access
and Denial of Service

- ------------------------------------------------------------------
NOTICE: There are no restrictions for distribution of this
Bulletin provided that it remains complete and intact.

RELEASE DATE: 3 December 2003

SEVERITY:  1

SOURCE:  HEWLETT-PACKARD COMPANY
Software Security Response Team

REFERENCE:  CERT VU#575804

PROBLEM SUMMARY
A potential security vulnerability has been identified in the HP
Tru64 UNIX CDE libdthelp.so software that may result in a local
user gaining unauthorized privileged access and possibly causing
a Denial of Service (DoS).

VERSIONS IMPACTED
The currently supported version of HP Tur64 UNIX V5.1 (BL20) only

RESOLUTION
HP is releasing the following Early Release Patch ERP kit.

The ERP kit uses dupatch to install and will not install over any
installed Customer Specific Patches (CSPs) that have file
intersections with the ERP.  Contact your service provider for
assistance if the installation of the ERP is blocked by any of
your installed CSPs.

Early Release Patch

HP Tru64 UNIX V5.1
PREREQUISITE:  HP Tru64 UNIX with PK6 (BL20) installed
ERP Kit Name:     T64KIT0020835-V51B20-ES-20031124
Kit Location:

http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020835-V51B20-ES-20031124

Note: The V5.1 PK6 (BL20) ERP kit has a file intersection with the
previously released kit for the following:
  SSRT2373, SSRT2374, SSRT2405, SRT2415, SSRT2416 Potential CDE
  Buffer OverFlows

This ERP kit contains the libdthelp.so corrections from SSRT2373,
SSRT2374, SSRT2405, SRT2415, SSRT2416 and is designed to install
standalone or seamlessly over the previous SSRT2373, SSRT2374,
SSRT2405, SRT2415, SSRT2416 patch kit.

For more information on  SSRT2373, SSRT2374, SSRT2405, SRT2415,
SSRT2416 Potential CDE Buffer OverFlows, please see the following
web page:

http://www-unix.zk3.dec.com:8083/unix/security-download.html

MD5 checksums are available from the ITRC patch database main page
http://www.itrc.hp.com/service/patch/mainPage.do.
- From the patch database main page, click tru64 UNIX, then click
verifying MD5 checksums under useful links.

SUPPORT: For further information, contact HP Services.

SUBSCRIBE: To subscribe to automatically receive future Security
Advisories from the Software Security Response Team via electronic
mail: http://www.support.compaq.com/patches/mail-list.shtml

REPORT: To report a potential security vulnerability with any HP
supported product, send email to: security-alert@hp.com

As always, HP urges you to periodically review your system management
and security procedures. HP will continue to review and enhance the
security features of its products and work with our customers to
maintain and improve the security and integrity of their systems.

"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."

(C)Copyright 2003 Hewlett-Packard Company
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 or 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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