# Exploit Title: Acer Updater Service 1.2.3500.0 - 'UpdaterService.exe' Unquoted Service Path
# Discovery by: Emmanuel Lujan
# Discovery Date: 2020-11-26
# Vendor Homepage: https://www.acer.com/ac/en/US/content/home
# Tested Version: 1.2.3500.0
# Vulnerability Type: Unquoted Service Path
# Tested on OS: Windows 7 Home Premium x64
# Step to discover Unquoted Service Path:
C:\>wmic service get name, pathname, displayname, startmode | findstr /i "Auto" | findstr /i /v "C:\Windows\\" | findstr /i /v """
Live Updater Service Live Upd
ater Service C:\Program Files\Acer\Acer Updater\Updater
Service.exe Auto
# Service info:
C:\>sc qc "Live Updater Service"
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: Live updater Service
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files\Acer\Acer Updater\UpdaterService.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Live Updater 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.
