The NVIDIA Stereoscopic 3D Driver Service exposes the named pipe “stereosvrpipe” which implements a simple command response service. One of the commands (number 2) will write an arbitrary value to a fixed set of two registry keys, one which is specific to NVIDIA (no effort has been made to determine if this could be abused) and also the HKEY_LOCAL_MACHINE explorer Run key. This Run key is inspected when a new copy of the Windows Explorer shell is started, any values are treated as command lines to execute. Therefore any user on the system can create an arbitrary run key entry and get their own commands to execute in the security context of any other user (such as an administrator) who logs into the system to interact with the desktop. The named pipe is not locked down to prevent abuse, in fact it’s given a NULL DACL which means that any user can open the device, although it can’t be exploited from typical application sandboxes such as Chrome or IE. When the pipe is created no attempt is made to prevent remote access to the pipe (by passing the PIPE_REJECT_REMOTE_CLIENTS) flag. This means that the service can also be exposed to externals systems on the same network, allowing the vulnerability to be exploited between machines in a Windows Domain environment.