PHP Improper Input Validation Vulnerability - CVE-2013-7327
The gdImageCrop function in ext/gd/gd.c in PHP 5.5.x before 5.5.9 does not check return values which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via invalid imagecrop arguments that lead to use of a NULL pointer as a return value a different vulnerability than CVE-2013-7226.