TippingPoint Zero Day Initiative

Trend Micro Maximum Security tmusa Kernel Driver Untrusted Pointer Dereference Denial of Service Vulnerability

ZDI-17-395: June 13th, 2017

CVSS Score

Affected Vendors

Affected Products

    Maximum Security

Vulnerability Details

This vulnerability allows local attackers to deny service on vulnerable installations of Trend Micro Maximum Security. 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 processing of IOCTL 0x00222813 in tmusa.sys. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this to deny service to the system.

Vendor Response

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

Disclosure Timeline

    2017-02-02 - Vulnerability reported to vendor
    2017-06-13 - Coordinated public release of advisory


This vulnerability was discovered by:
    bee13oy of CloverSec Labs