Microsoft updated Microsoft Security Advisory 2286198 to provide an automated "Fix It" solution to implement the workaround provided in the original Security Advisory release.
The Fix it disables .LNK and .PIF file functionality automatically on a computer that is running Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, or Windows Server R2.
Complete details about the Fix it solution to both enable the workaround and disable it after a security update has been released are available in Microsoft KB 2286198.
NOTE: Applying the Fix it will require a restart of the machine.
After a security update is released for this vulnerability, you can undo the changes made by the Fix it solution by using Microsoft Fix it 50487.
References:
* KB 2286198: Vulnerability in Windows Shell could allow remote code execution
* MSRC Blog: Security Advisory 2286198 Updated