The JBoss EAP 430CP09 security updates for Red Hat Enterprise Linux 4, Red Hat Enterprise Linux 5 and the Customer Support Portal did not, unlike the erratum text stated, provide a fix for CVE-2010-3862, a Denial-of-Service (DoS) flaw in the jboss-remoting component. A missing patch is considered a security regression, and requires a new CVE name. This regression is assigned CVE-2010-4265. It fixes the same issue as CVE-2010-3862 and is specific to JBoss EAP 430CP09.

The org.jboss.remoting.transport.bisocket.BisocketServerInvoker$SecondaryServerSocketThread.run method in JBoss Remoting 2.2.x before 2.2.3.SP4 and 2.5.x before 2.5.3.SP2 in Red Hat JBoss Enterprise Application Platform (aka JBoss EAP or JBEAP) 4.3 through 4.3.0.CP09, and 5.1.0; and JBoss Enterprise Web Platform (aka JBEWP) 5.1.0; allows remote attackers to cause a denial of service (daemon outage) by establishing a bisocket control connection TCP session, and then not sending any application data.

The JBoss Server in JBoss Enterprise Application Platform 5.1.x before 5.1.2 and 5.2.x before 5.2.2, Web Platform before 5.1.2, BRMS Platform before 5.3.0, and SOA Platform before 5.3.0, when the server is configured to use the JaccAuthorizationRealm and the ignoreBaseDecision property is set to true on the JBossWebRealm, does not properly check the permissions created by the WebPermissionMapping class, which allows remote authenticated users to access arbitrary applications.

A flaw was found in the way JBoss RichFaces handled deserialization. A remote attacker could use this flaw to trigger the execution of the deserialization methods in any serializable class deployed on the server. This could lead to a variety of security impacts depending on the deserialization logic of these classes.