CVE-2015-0228

La función lua_websocket_read en lua_request.c en el módulo mod_lua en Apache HTTP Server hasta 2.4.12 permite a atacantes remotos causar una denegación de servicio (caída del proceso hijo) mediante el envío de un Frame WebSocket Ping manipulado después de que una secuencia de comandos Lua haya llamado a la función wsupgrade.

A denial of service flaw was found in the way the mod_lua httpd module processed certain WebSocket Ping requests. A remote attacker could send a specially crafted WebSocket Ping packet that would cause the httpd child process to crash.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Multiple flaws were found in the way httpd parsed HTTP requests and responses using chunked transfer encoding. A remote attacker could use these flaws to create a specially crafted request, which httpd would decode differently from an HTTP proxy software in front of it, possibly leading to HTTP request smuggling attacks. It was discovered that in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly indicate that a request was authenticated even when no authentication was used. An httpd module using this API function could consequently allow access that should have been denied.