The popSubjectContext method in the SecurityAssociation class in JBoss Enterprise Java Beans (EJB) 3.0 RC3 maintains the threadPrincipal and threadCredential values from a previous client's authentication after termination of a client session, which allows remote attackers to gain the roles of an arbitrary previous client who had the same JBoss server thread.
JBoss Enterprise Application Platform (aka JBossEAP or EAP) before 4.2.0.CP03, and 4.3.0 before 4.3.0.CP01, allows remote attackers to obtain sensitive information about "deployed web contexts" via a request to the status servlet, as demonstrated by a full=true query string.