The WDDX deserializer in the wddx extension in PHP 5 before 5.2.1 and
PHP 4 before 4.4.5 does not properly initialize the key_length
variable for a numerical key, which allows context-dependent attackers
to read stack memory via a wddxPacket element that contains a variable
with a string name before a numerical variable.
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disclosed, or updated in CVE.
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