AVAST SecureLine 5.5.522.0 – ‘SecureLine’ Unquoted Service Path
# Exploit Title: AVAST SecureLine 5.5.522.0 - 'SecureLine' Unquoted Service Path # Discovery by: Roberto Piña # Discovery Date: 2020-03-24 # Vendor Homepage:https://www.avast.com/ # Software Link :https://www.avast.com/es-mx/download-thank-you.php?product=SLN&locale=es-mx # Tested Version: 5.5.522.0 # Vulnerability Type: Unquoted Service Path # Tested on OS: Windows 8.1 Single Language x32 es # Step to discover Unquoted Service Path: C:\>wmic service get name, pathname, displayname, startmode | findstr "Auto" | f indstr /i /v "C:\Windows\\" | findstr /i "Avast SecureLine" | findstr /i /v """ Avast SecureLine SecureLine C:\Program Files\AVAST Software\SecureLine\VpnSvc.exe Auto C:\>sc qc SecureLine [SC] QueryServiceConfig CORRECTO NOMBRE_SERVICIO: SecureLine TIPO : 10 WIN32_OWN_PROCESS TIPO_INICIO : 2 AUTO_START CONTROL_ERROR : 1 NORMAL NOMBRE_RUTA_BINARIO: C:\Program Files\AVAST Software\SecureLine\VpnSvc.exe GRUPO_ORDEN_CARGA : ETIQUETA : 0 NOMBRE_MOSTRAR : Avast SecureLine DEPENDENCIAS : NOMBRE_INICIO_SERVICIO: 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. |