PT-2009-09: Trend Micro Internet Security Pro 2009 tmactmon.sys Priviliege Escalation Vulnerabilities

Affected Software

Trend Micro
Trend Micro Internet Security Pro 2009
Trend Micro Internet Security 2009
Trend Micro Internet Security Pro 2008
Trend Micro Internet Security 2008

Product Link:

Severity Rating

Severity: Medium
Impact: Priviliege Escalation
Attack Vector: Local

Base Score: 6.9
Temporal Score: 6.6
Vector: (AV:L/AC:M/Au:N/C:C/I:C/A:C/E:F/RL:U/RC:C)

CVE: CVE-2009-0686

Software Description

Trend Micro(TM) Internet Security Pro provides comprehensive protection against viruses, Trojan horse programs, worms, and other
threats, including network viruses and rootkits. It also blocks spyware, hackers, phishing fraud attempts, and unwanted Web sites. It can filter your email messages for spam as well.

Vulnerability Description

Positive Technologies Research Team has discovered multiple priviliege escalation vulnerabilities in Trend Micro products.

The IOCTL handler in tmactmon.sys uses the METHOD_NEITHER communication method for IOCTLs and does not properly validate buffer data associated with the Irp object, which allows local users to gain SYSTEM privilieges.


Not available.

Disclosure Timeline

02.04.2009 - Vendor notified
no response
02.12.2009 - Second notification
no response
03.31.2009 - Vulnerability details disclosed by third party
03.31.2009 - Public disclosure


This vulnerability was discovered by Nikita Tarakanov, Positive Technologies Research Team.


Complete list of vulnerability reports published by Positive Technologies Research Team: