CVE-2014-5120

gd_ctx.c en el componente GD en PHP 5.4.x anterior a 5.4.32 y 5.5.x anterior a 5.5.16 no asegura que a los nombres de rutas les falten las secuencias %00, lo que podría permitir a atacantes remotos sobrescribir ficheros arbitrarios a través de entradas manipuladas en una aplicación que llama la función (1) imagegd, (2) imagegd2, (3) imagegif, (4) imagejpeg, (5) imagepng, (6) imagewbmp o (7) imagewebp.

It was found that PHP's gd extension did not properly handle file names with a null character. A remote attacker could possibly use this flaw to make a PHP application access unexpected files and bypass intended file system access restrictions.

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.