Jmx console reinvoke operation results in 500 error code.

Issue

• EAP 5.2 JMX console throws 500 error page on reinvocation of operations such as listThreadDump, listMemoryPools etc with the following error stack in server.log.

2013-06-22 19:02:37,957 WARN  [org.jboss.jmx.adaptor.html.HtmlAdaptorServlet] (http-127.0.0.1-8080-2) Received request for invokeOpByName with invalid or missing CSRFToken token. This might indicate that someone is trying CSRF attack on your server.
2013-06-22 19:02:37,958 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/jmx-console].[HtmlAdaptor]] (http-127.0.0.1-8080-2) Servlet.service() for servlet HtmlAdaptor threw exception
javax.servlet.ServletException: Operation invoke prohibited.
    at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.invokeOpByName(HtmlAdaptorServlet.java:319)
    at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.processRequest(HtmlAdaptorServlet.java:106)
    at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.doGet(HtmlAdaptorServlet.java:81)
          :