Use-after-free vulnerability in process_nested_data function in PHP before 5.4.37, 5.5.x before 5.5.21, and 5.6.x before 5.6.5

CVE-2015-0231 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.37, 5.5.x before 5.5.21, and 5.6.x before 5.6.5 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages improper handling of duplicate numerical keys within the serialized properties of an object. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8142.

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