TippingPoint Zero Day Initiative

Trend Micro OfficeScan tmwfp Memory Corruption Privilege Escalation Vulnerability

ZDI-17-828: September 27th, 2017


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows local attackers to execute arbitrary code on vulnerable installations of Trend Micro OfficeScan. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the handling of IOCTL 0x220008 within tmwfp.sys. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges to resources normally reserved for the kernel.

Vendor Response

Trend Micro has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2017-09-05 - Vulnerability reported to vendor
    2017-09-27 - Coordinated public release of advisory


This vulnerability was discovered by: