PHP contains a flaw that may allow a context-dependent attacker to gain access to privileged information. The issue is due to the WDDX deserializer in the wddx extension not properly initializing the key_length variable for numerical keys. This may allow an attacker to read arbitrary parts of the stack memory via a crafted wddxPacket alement.
Loss of Confidentiality
Upgrade to version 4.4.5, 5.2.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.
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