Red Hat Security Advisory 2015-2557-01 – Red Hat JBoss A-MQ, based on Apache ActiveMQ, is a standards-compliant messaging system that is tailored for use in mission critical applications. Red Hat JBoss A-MQ 6.2.1 is a micro product release that updates Red Hat JBoss A-MQ 6.2.0, and includes several bug fixes and enhancements.