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TrendMicro Anti-Virus vulnerability

Published: 2007-02-08,
Last Updated: 2007-02-08 10:03:52 UTC
by Daniel Wesemann (Version: 1)

A buffer overflow vulnerability in the UPX parser of TrendMicro Antivirus seems to affect the product pretty much in all its incarnations. See esupport.trendmicro.com/support/viewxml.do   According to this, applying the latest pattern is sufficient to plug the problem until a new version of the engine (8.5) gets released.  Chances are though that the trend (no pun intended) will continue that AV products themselves contain the same type of  vulnerabilities they claim to shield other software against. Quis custodiet ipsos custodes ?

[Vulnerability Confirmation]

Antivirus UPX Parsing Kernel Buffer Overflow Vulnerability 

Solution ID:  1034289

A recent system upgrade added a ‘1’ or ‘2’ to old solution IDs. You find these solutions by removing or retaining the extra '1' or '2'.

Product:   Scan Engine - 8.300, Scan Engine - 8.000

Operating System:   N/A

Published:  2/8/07 5:34 PM

 

Problem:   Trend Micro has become aware of a vulnerability in its Scan Engine, wherein a corrupted UPX file can cause a buffer overflow and lead to either of the following:

• Blue screen of death (BSOD)

• Execution of arbitrary code that allows an attacker to take control of the system

 

It affects all Trend Micro products and versions using the Scan Engine and Pattern File technology. A complete list of products is found in:

• http://www.trendmicro.com/download/engine.asp

• http://www.trendmicro.com/download/pattern.asp

 

Solution:  To address the vulnerability, update to virus pattern file 4.245.00 or higher. This provides the following fixes:

• Update of the UPX Parsing algorithm

• Generic detection for malformed UPX files

 

If you encounter issues downloading the pattern file from the ActiveUpdate server, refer to the following manual update solutions:

 

Client / Server / Messaging Security for SMB

Manually updating the Pattern File on the Security Server

Manually updating the Pattern File on the Client / Server Security Agent

Manually updating the Pattern File on the Messaging Security Agent

Client / Server Security for SMB

Manually updating the Pattern File on the Security Server

Manually updating the Pattern File on the Client / Server Security Agent

Control Manager

InterScan Messaging Security Suite

InterScan VirusWall

InterScan VirusWall for SMB (version 5.0)

InterScan Web Security Suite

OfficeScan

ScanMail for Lotus Domino

ScanMail for Microsoft Exchange

ServerProtect for Linux

ServerProtect for Microsoft Windows

ServerProtect for Novell NetWare

Trend Micro PC-cillin Internet Security 2005

Trend Micro PC-cillin Internet Security 2006

Trend Micro PC-cillin Internet Security 2007

 

If you suspect that you may have been affected by this vulnerability, contact your Technical Account Manager or Trend Micro Technical Support Services in your region.

This vulnerability was reported to Trend Micro by the iDefense Vulnerability Labs.

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