I can't find any material on "function interruption" vulnerabilities that seem to plague older versions of PHP. Anyone have a good source on the matter? A good source being something that describes the attack/why certain php functions were vulnerable?
2 seconds of Googling: http://www.php-security.org/MOPB/MOPB-37-2007.html and https://bugzilla.redhat.com/show_bug.cgi?id=619324
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