Php · Php · CVE-2015-6834
**Name of the Vulnerable Software and Affected Versions**
PHP versions prior to 5.4.45
PHP versions 5.5.x prior to 5.5.29
PHP versions 5.6.x prior to 5.6.13
**Description**
The issue is related to multiple use-after-free vulnerabilities in PHP, which can be exploited by a remote attacker to execute arbitrary code. This is achieved through vectors related to the `Serializable` interface, the `SplObjectStorage` class, and the `SplDoublyLinkedList` class, which are mishandled during unserialization.
**Recommendations**
For PHP versions prior to 5.4.45, update to version 5.4.45 or later.
For PHP versions 5.5.x prior to 5.5.29, update to version 5.5.29 or later.
For PHP versions 5.6.x prior to 5.6.13, update to version 5.6.13 or later.
As a temporary workaround, consider restricting the use of the `Serializable` interface, the `SplObjectStorage` class, and the `SplDoublyLinkedList` class to minimize the risk of exploitation.