Vulnerability Note VU#276432

Trend Micro AntiVirus fails to properly process malformed UPX packed executables

Original Release date: 08 Feb 2007 | Last revised: 15 Mar 2007


The Trend Micro AntiVirus scanning engine contains a buffer overflow, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.


Trend Micro AntiVirus is a virus scanner for Microsoft Windows and Linux. The Trend Micro virus scanning engine is included with Trend Micro security suites and other AntiVirus products. UPX is an open source packer for several executable formats. Malicious code is known to be compressed with UPX to avoid detection.

A buffer overflow vulnerability exists in Trend Micro AntiVirus that may occur when the scanning engine processes a malformed UPX archived file. If a specially crafted, UPX packed executable is scanned by Trend Micro, this vulnerability may be triggered.

Note that both Microsoft Windows and Linux operating systems running unpatched versions of the Trend Micro virus engine may be vulnerable.


A remote, unauthenticated attacker may be able to execute arbitrary code with kernel level privileges, or create a denial-of-service condition.


Trend Micro has released an update to address this issue.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Trend MicroAffected-08 Feb 2007
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Thanks to iDefense for information that was used in this report.

This document was written by Ryan Giobbi.

Other Information

  • CVE IDs: Unknown
  • Date Public: 07 Feb 2007
  • Date First Published: 08 Feb 2007
  • Date Last Updated: 15 Mar 2007
  • Severity Metric: 42.53
  • Document Revision: 61


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