CVE-2014-7810

La implementación Expression Language (EL) en Apache Tomcat 6.x anterior a 6.0.44, 7.x anterior a 7.0.58, y 8.x anterior a 8.0.16 no considera correctamente la posibilidad de una interfaz accesible implementada por una clase no accesible, lo que permite a atacantes evadir un mecanismo de protección SecurityManager a través de una aplicación web que aprovecha el uso de privilegios incorrectos durante la evaluación EL.

It was found that the expression language resolver evaluated expressions within a privileged code section. A malicious web application could use this flaw to bypass security manager protections.

Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector, JBoss HTTP Connector, Hibernate, and the Tomcat Native library. It was found that the expression language resolver evaluated expressions within a privileged code section. A malicious web application could use this flaw to bypass security manager protections. It was found that Tomcat would keep connections open after processing requests with a large enough request body. A remote attacker could potentially use this flaw to exhaust the pool of available connections and preventing further, legitimate connections to the Tomcat server to be made.