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AUSCERT External Security Bulletin Redistribution
ESB-2008.0790 -- [Win]
Trend Micro OfficeScan ActiveX Buffer Overflow Issue
12 August 2008
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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:
http://esupport.trendmicro.com/support/viewxml.do?ContentID=EN-1037899&id=EN-1037899
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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
_________________________________________________________________
Problem:
Trend Micro OSCE Vulnerability Disclosure
Solution:
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
3.6
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
webpage.
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
Microsoft:
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
assistance.
Copyright (c) 1989-2008 Trend Micro Incorporated. All rights reserved.
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