The Gear Software CD DVD Filter driver contains a privilege escalation vulnerability, which can allow an attacker to gain SYSTEM privileges.
Gear Software provides a driver called CD DVD Filter, which is provided by GEARAspiWDM.sys. This driver is used by multiple CD/DVD recording applications. The Gear Software CD DVD Filter driver allows unlimited calls to IoAttachDevice from a user-space application. By making multiple calls to IoAttachDevice, an attacker may be able to exploit an integer overflow in the Microsoft Windows kernel to execute code with SYSTEM privileges.
An attacker may be able to execute code with SYSTEM privileges.
Apply an update
This issue is addressed in GEAR driver version 4.001.7, which provides GEARAspiWDM.sys version 126.96.36.199. This version of the CD DVD Filter driver limits the number of IoAttachDevice calls that can be made. Please check with your software vendor for updates that contains this fixed driver. If no update is available, the stand-alone driver from GEAR may be installed.
Apple Computer, Inc.
GEAR Software, Inc.
Thanks to Ruben Santamarta of Wintercore for reporting this vulnerability by way of the Microsoft Security Response Center.
This document was written by Will Dormann.
|Date First Published:||2008-10-07|
|Date Last Updated:||2008-10-07 20:35 UTC|