50 lines
1 KiB
PHP
50 lines
1 KiB
PHP
--TEST--
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Bug #70219 Use after free vulnerability in session deserializer
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--EXTENSIONS--
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session
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--FILE--
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<?php
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ini_set('session.serialize_handler', 'php_serialize');
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session_start();
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class obj implements Serializable {
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var $data;
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function serialize() {
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return serialize($this->data);
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}
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function unserialize($data) {
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session_decode($data);
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}
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}
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$inner = 'r:2;';
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$exploit = 'a:2:{i:0;C:3:"obj":'.strlen($inner).':{'.$inner.'}i:1;C:3:"obj":'.strlen($inner).':{'.$inner.'}}';
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$data = unserialize($exploit);
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for ($i = 0; $i < 5; $i++) {
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$v[$i] = 'hi'.$i;
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}
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var_dump($data);
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var_dump($_SESSION);
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?>
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--EXPECTF--
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Deprecated: %s implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s on line %d
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array(2) {
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[0]=>
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object(obj)#%d (1) {
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["data"]=>
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NULL
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}
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[1]=>
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object(obj)#%d (1) {
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["data"]=>
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NULL
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}
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}
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object(obj)#1 (1) {
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["data"]=>
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NULL
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}
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