CVE-2014-3587

Desbordamiento de enteros en la función cdf_read_property_info en cdf.c en ficheros hasta 5.19, utilizado en el componente Fileinfo en PHP anterior a 5.4.32 y 5.5.x anterior a 5.5.16, permite a atacantes remotos causar una denegación de servicios (la caída de la aplicación) a través de un fichero CDF manipulado. NOTA: esta vulnerabilidad existe debido a una solución incompleta para CVE-2012-1571.

It was found that the fix for CVE-2012-1571 was incomplete; the File Information (fileinfo) extension did not correctly parse certain Composite Document Format (CDF) files. A remote attacker could use this flaw to crash a PHP application using fileinfo via a specially crafted CDF file.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. PHP's fileinfo module provides functions used to identify a particular file according to the type of data contained by the file. A buffer overflow flaw was found in the way the File Information extension processed certain Pascal strings. A remote attacker able to make a PHP application using fileinfo convert a specially crafted Pascal string provided by an image file could cause that application to crash. Multiple flaws were found in the File Information extension regular expression rules for detecting various files. A remote attacker could use either of these flaws to cause a PHP application using fileinfo to consume an excessive amount of CPU.