Buffer Over-read Vulnerability in PHP's finish_nested_data Function

CVE-2017-12933 · HIGH Severity

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

The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.

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