php: Use after free in WDDX Deserialize when processing XML data

Use-after-free vulnerability in wddx.c in the WDDX extension in PHP before 5.5.33 and 5.6.x before 5.6.19 allows remote attackers to cause a denial of service memory corruption and application crash or possibly have unspecified other impact by triggering a wddxdeserialize call on XML data...