CVE-2010-2531

La función var_export en PHP v5.2 anterior a v5.2.14 y v5.3 anterior a v5.3.3 vacía el búfer de salida para el usuario cuando se producen ciertos errores graves, incluso cuando display_errors está apagado, lo que permite a atacantes remotos obtener información sensible provocando que la aplicación exceda los límites de memoria, tiempo de ejecución, o recursividad.

This is a maintenance and security update that upgrades php to 5.3.3 for 2010.0/2010.1. Rewrote var_export() to use smart_str rather than output buffering, prevents data disclosure if a fatal error occurs. Fixed a possible resource destruction issues in shm_put_var(). Fixed a possible information leak because of interruption of XOR operator. Fixed a possible memory corruption because of unexpected call-time pass by reference and following memory clobbering through callbacks. Fixed a possible memory corruption in ArrayObject::uasort(). Fixed a possible memory corruption in parse_str(). Fixed a possible memory corruption in pack(). Fixed a possible memory corruption in substr_replace(). Fixed a possible memory corruption in addcslashes(). Fixed a possible stack exhaustion inside fnmatch(). Fixed a possible dechunking filter buffer overflow. Fixed a possible arbitrary memory access inside sqlite extension. Fixed string format validation inside phar extension. Fixed handling of session variable serialization on certain prefix characters. Fixed a NULL pointer dereference when processing invalid XML-RPC requests. Fixed SplObjectStorage unserialization problems. Fixed possible buffer overflows in mysqlnd_list_fields, mysqlnd_change_user. Fixed possible buffer overflows when handling error packets in mysqlnd. Additionally some of the third party extensions and required dependencies has been upgraded and/or rebuilt for the new php version.