Viscosity 1.6.7 - Local Privilege Escalation

Author: Kacper Szurek
type: local
platform: windows
port: nan
date_added: 2017-01-31 
date_updated: 2017-01-31 
verified: 0 
codes:  
tags: 
aliases:  
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# Exploit Title: Viscosity for Windows 1.6.7 Privilege Escalation
# Date: 31.01.2017
# Software Link: https://www.sparklabs.com/
# Exploit Author: Kacper Szurek
# Contact: https://twitter.com/KacperSzurek
# Website: https://security.szurek.pl/
# Category: local

1. Description

It is possible to execute openvpn with custom dll as SYSTEM using ViscosityService because path is not correctly validated.

https://security.szurek.pl/viscosity-for-windows-167-privilege-escalation.html

2. Proof of Concept

https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/41207.zip

3. Solution

Update to version 1.6.8

https://www.sparklabs.com/blog/viscosity-for-mac-windows-version-1-6-8/