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61f2f5a0f7
If a (nested) unserialize() call fails, we remove all the values that were inserted into var_hash during that call. This prevents their use in other unserializations in the same context.
28 lines
726 B
PHP
28 lines
726 B
PHP
--TEST--
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Bug #72663 (2): Don't allow references into failed unserialize
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--FILE--
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<?php
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class obj implements Serializable {
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public $data;
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function serialize() {
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return serialize($this->data);
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}
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function unserialize($data) {
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$this->data = unserialize($data);
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}
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}
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$inner = 'a:1:{i:0;O:9:"Exception":2:{s:7:"'."\0".'*'."\0".'file";R:4;}';
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$exploit = 'a:2:{i:0;C:3:"obj":'.strlen($inner).':{'.$inner.'}i:1;R:4;}';
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var_dump(unserialize($exploit));
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?>
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--EXPECTF--
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Notice: unserialize(): Unexpected end of serialized data in %s on line %d
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Notice: unserialize(): Error at offset 46 of 47 bytes in %s on line %d
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Notice: unserialize(): Error at offset 79 of 80 bytes in %s on line %d
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bool(false)
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