PAL.C.T MINI SHELL
--TEST--
Bug #70219 Use after free vulnerability in session deserializer
--SKIPIF--
<?php
if (!extension_loaded("session")) {
die("skip Session module not loaded");
}
?>
--FILE--
<?php
ini_set('session.serialize_handler', 'php_serialize');
session_start();
class obj implements Serializable {
var $data;
function serialize() {
return serialize($this->data);
}
function unserialize($data) {
session_decode($data);
}
}
$inner = 'r:2;';
$exploit = 'a:2:{i:0;C:3:"obj":'.strlen($inner).':{'.$inner.'}i:1;C:3:"obj":'.strlen($inner).':{'.$inner.'}}';
$data = unserialize($exploit);
for ($i = 0; $i < 5; $i++) {
$v[$i] = 'hi'.$i;
}
var_dump($data);
var_dump($_SESSION);
?>
--EXPECTF--
array(2) {
[0]=>
object(obj)#%d (1) {
["data"]=>
NULL
}
[1]=>
object(obj)#%d (1) {
["data"]=>
NULL
}
}
object(obj)#1 (1) {
["data"]=>
NULL
}
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