=====================================================================
                                   CERT-Renater

                        Note d'Information No. 2009/VULN087
_____________________________________________________________________

DATE                      : 11/03/2009

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running IBM Tivoli Storage Manager Express.

======================================================================
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=775
http://www-306.ibm.com/software/tivoli/products/storage-mgr-express/
______________________________________________________________________

iDefense Security Advisory 03.10.08
http://labs.idefense.com/intelligence/vulnerabilities/
Mar 10, 2008

I. BACKGROUND

IBM Corp.'s Tivoli Storage Manager Express is a simple backup management
software targeting small business customer. For more information, please
visit vendor's website at the following URL.

http://www-306.ibm.com/software/tivoli/products/storage-mgr-express/

II. DESCRIPTION

Remote exploitation of a heap buffer overflow vulnerability in IBM
Corp.'s Tivoli Storage Manager Express backup server could allow an
unauthenticated attacker to execute arbitrary code with SYSTEM
privileges.

The vulnerability exists within adsmdll.dll which is loaded by the
Tivoli Storage Manager Express daemon dsmsvc.exe. The vulnerable
function allocates a fixed-size heap buffer, and uses part of this
buffer for storing session related data. A user-supplied value is then
used as the length of bytes to copy into this buffer. Due to a lack of
bounds checking, a buffer overflow can occur.

III. ANALYSIS

Exploitation allows an attacker to execute arbitrary code with SYSTEM
privileges. No authentication is required to exploit this
vulnerability.

IV. DETECTION

iDefense has confirmed this vulnerability in adsmdll.dll version
5.3.7.7296, as included in Tivoli Storage Manager Express 5.3.7.3 with
all available patches as of July 2008. All previous versions are
suspected vulnerable.

V. WORKAROUND

iDefense is currently unaware of any effective workarounds for this
issue. The vulnerability is within a core component of Tivoli Storage
Management Express which cannot be disabled without major functionality
loss.

VI. VENDOR RESPONSE

IBM Corp,'s Tivoli team has released patches and workarounds to address
this vulnerability. For more information, consult their advisory at the
following URL.

http://www-01.ibm.com/support/docview.wss?uid=swg21377388

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-4563 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

03/10/2008  - Coordinated public disclosure
03/10/2008  - Status update received
03/10/2008  - Status updated requested
07/22/2008  - Initial Contact
07/31/2008  - Initial Response
07/31/2008  - PoC Requested
07/31/2008  - PoC Sent
09/02/2008  - Status update received - no estimated release date
09/12/2008  - Status update received - no estimated release date
09/23/2008  - Status update received - estimated release date February 2009

IX. CREDIT

The discoverer of this vulnerability wishes to remain anonymous.

Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php

Free tools, research and upcoming events
http://labs.idefense.com/

X. LEGAL NOTICES

Copyright © 2009 iDefense, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically,
please e-mail customerservice@idefense.com for permission.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
 There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.
======================================================================

          =========================================================
          Les serveurs de référence du CERT-Renater
          http://www.urec.fr/securite
          http://www.cru.fr/securite
          http://www.renater.fr
          =========================================================
          + CERT-RENATER          | tel : 01-53-94-20-44          +
          + 151 bd de l'Hopital   | fax : 01-53-94-20-41          +
          + 75013 Paris           | email: certsvp@renater.fr     +
          =========================================================