Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                          ESB-2008.0790 -- [Win]
           Trend Micro OfficeScan ActiveX Buffer Overflow Issue
                              12 August 2008


        AusCERT Security Bulletin Summary

Product:              OfficeScan - 8.0
                      OfficeScan - 7.3
                      OfficeScan - 7.0
                      Worry-Free Business Security - 5.0
                      Client Server Messaging Security for SMB - 3.6
                      Client Server Messaging Security for SMB - 3.5
Publisher:            Trend Micro
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated

Original Bulletin:  

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   Trend Micro OfficeScan ActiveX Buffer Overflow Issue

   Solution ID: 1037899
   Product: OfficeScan - 7.0, OfficeScan - 7.3, OfficeScan - 8.0,
   Worry-Free Business Security - 5.0, Client Server Messaging Security
   for SMB - 3.5, Client Server Messaging Security for SMB - 3.6
   Operating System: Windows 2000 Advanced Server - SP4, Windows 2000
   Server - SP4, Windows NT 4.0, SP 6a, Windows Server 2003 Standard
   Edition - SP1, Windows Vista, Windows XP
   Published: 7/31/08 5:55 PM


   Trend Micro OSCE Vulnerability Disclosure

   I.  Description:

   Trend Micro has become aware of an issue that affects some versions of
   Trend Micro OfficeScan (OSCE) whereby a remote user could cause a
   buffer overflow and execute arbitrary code in the context of the
   currently logged-in user.

   II.  Products Affected:

   This issue affects the following Trend Micro products and versions:

   o Trend Micro OfficeScan (OSCE) versions 7.0, 7.3, and 8.0
   o Trend Micro Worry-Free Business Security (WFBS) version 5.0
   o Trend Micro Client Server Messaging Security (CSM) versions 3.5 and

   III.  Background:

   The OfficeScan Web Console utilizes several ActiveX controls when
   deploying the product through its Web interface. One of these
   controls, objRemoveCtrl, has been found to be vulnerable to a
   stack-based buffer overflow when embedded in a webpage. An attacker
   could exploit these issues by enticing a victim into viewing a
   malicious web page. A successful exploit would allow attacker-supplied
   code to run in the context of the currently logged-in user.

   IV.  Impact:

   A potential attacker could exploit this issue and execute arbitrary
   code with the user's privileges or entice them to visit a malicious

   Please note that only clients that were installed via the Web console
   would be vulnerable due to the downloaded ActiveX control. Clients
   installed via other methods would not be affected.

   V.  Workaround:

   A temporary workaround has been identified for this issue.
   Administrators may set the kill bit to prevent the objRemoveCtrl from
   running in Internet Explorer.

   For more information, please read the following information from

   How to stop an ActiveX control from running in Internet Explorer

   VI.  Permanent Solution:

   To address this issue, Trend Micro has tentatively scheduled the
   release of security patches to address this issue for the affected
   products and versions as listed below:

   o OfficeScan 7.0, 7.3, and 8.0:                 August 8, 2008
   o Worry-Free Business Security 5.0:             August 8, 2008
   o Client Server Messaging Security 3.5 and 3.6: August 15, 2008

   An announcement will be made if the security patches become available
   before the scheduled dates.

   If you are still having error messages after this latest update,
   please contact your local Trend Micro support contact for additional

   Copyright (c) 1989-2008 Trend Micro Incorporated. All rights reserved.

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