CVE-2013-7327

La función gdImageCrop en ext/gd/gd.c en PHP 5.5.x anterior a 5.5.9 no comprueba los valores de retorno, lo que permite a atacantes remotos causar una denegación de servicio (caída de aplicación) o posiblemente tener otro impacto no especificado a través de argumentos imagecrop no válidos que conducen al uso de un puntero nulo como valor de retorno, una vulnerabilidad diferente a CVE-2013-7226.

Bernd Melchers discovered that PHP's embedded libmagic library incorrectly handled indirect offset values. An attacker could use this issue to cause PHP to consume resources or crash, resulting in a denial of service. It was discovered that PHP incorrectly handled certain values when using the imagecrop function. An attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service, obtain sensitive information, or possibly execute arbitrary code. This issue only affected Ubuntu 13.10. Various other issues were also addressed.