Internet Bug Bounty: integer overflow in urlencode caused heap corruption

Please check: https://bugs.php.net/bug.php?id=72849...

CVE-2011-0708

exif.c in the Exif extension in PHP before 5.3.6 on 64-bit platforms performs an incorrect cast, which allows remote attackers to cause a denial of service application crash via an image with a crafted Image File Directory IFD that triggers a buffer over-read...