(RHSA-2013:0235) Important: jbossweb security update

JBoss Web is a web container based on Apache Tomcat. It provides a single
deployment platform for the JavaServer Pages (JSP) and Java Servlet
technologies.

It was found that when an application used FORM authentication, along with
another component that calls request.setUserPrincipal() before the call to
FormAuthenticator#authenticate() (such as the Single-Sign-On valve), it was
possible to bypass the security constraint checks in the FORM authenticator
by appending “/j_security_check” to the end of a URL. A remote attacker
with an authenticated session on an affected application could use this
flaw to circumvent authorization controls, and thereby access resources not
permitted by the roles associated with their authenticated session.
(CVE-2012-3546)

Warning: Before applying this update, back up your JBoss installation,
including any databases, database settings, applications, configuration
files, and so on.

All users of JBoss Enterprise Portal Platform 5.2.2 and JBoss Enterprise
SOA Platform 5.3.0 as provided from the Red Hat Customer Portal are advised
to install this update.