OpenVPN Private Tunnel 2.8.4 - 'ovpnagent' Unquoted Service Path

vendor:

OpenVPN Private Tunnel

by:

Sainadh Jamalpur

7.5

CVSS

HIGH

Unquoted service path

426

CWE

Product Name: OpenVPN Private Tunnel

Affected Version From: 2.8.2004

Affected Version To: 2.8.2004

Patch Exists: NO

Related CWE:

CPE: a:openvpn_technologies:privatetunnel:2.8.4

Metasploit:

Other Scripts:

Platforms Tested: Windows 10 64bit

2019

OpenVPN Private Tunnel 2.8.4 – ‘ovpnagent’ Unquoted Service Path

Unquoted service paths in OpenVPN Private Tunnel v2.8.4 have an 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:

Update to the latest version of OpenVPN Private Tunnel. Ensure that service paths are properly quoted to prevent this vulnerability.

Source

Exploit-DB raw data:

# Title: OpenVPN Private Tunnel 2.8.4 - 'ovpnagent' Unquoted Service Path
# Author: Sainadh Jamalpur
# Date: 2019-10-31
# Vendor Homepage: https://openvpn.net/
# Software Link: https://swupdate.openvpn.org/privatetunnel/client/privatetunnel-win-2.8.exe
# Version : PrivateTunnel v2.8.4
# Tested on: Windows 10 64bit(EN)
# CVE : N/A

# =====================================================
# 1. Description:
# Unquoted service paths in OpenVPN Private Tunnel v2.8.4 have an unquoted service path.

#PoC
===========
C:\>sc qc ovpnagent
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: ovpnagent
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files (x86)\OpenVPN
Technologies\PrivateTunnel\ovpnagent.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : OpenVPN Agent
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem

C:\>

#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.