## https://sploitus.com/exploit?id=1337DAY-ID-34135
# Exploit Title: Veyon 4.3.4 - 'VeyonService' Unquoted Service Path
# Discovery by: Víctor García
# Vendor Homepage: https://veyon.io/
# Software Link:
https://github.com/veyon/veyon/releases/download/v4.3.4/veyon-4.3.4.0-win64-setup.exe
# Tested Version: 4.3.4
# Vulnerability Type: Unquoted Service Path
# Tested on: Windows 10 Pro x64
# Step to discover Unquoted Service Path:
C:\>wmic service get name,displayname,pathname,startmode |findstr /i "auto"
|findstr /i /v "C:\Windows\\" |findstr /i /v """
Veyon Service VeyonService C:\Program Files\Veyon\veyon-service.exe
# Service info:
C:\>sc qc VeyonService
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: VeyonService
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files\Veyon\veyon-service.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Veyon Service
DEPENDENCIES : Tcpip
: RpcSs
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.