CVE-2015-0231

Name of the Vulnerable Software and Affected Versions PHP versions 5.4.x through 5.4.36 PHP versions 5.5.x through 5.5.20 PHP versions 5.6.x through 5.6.4

Description The issue is related to a use-after-free vulnerability in the process nested data function in ext/standard/var unserializer.re in PHP. This vulnerability 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.

Recommendations For PHP versions 5.4.x through 5.4.36, update to version 5.4.37 or later. For PHP versions 5.5.x through 5.5.20, update to version 5.5.21 or later. For PHP versions 5.6.x through 5.6.4, update to version 5.6.5 or later.