activemq -- Unsafe deserialization

Alvaro Muatoz, Matthias Kaiser and Christian Schneider reports:

JMS Object messages depends on Java Serialization for
marshaling/unmashaling of the message payload. There are a couple of places
inside the broker where deserialization can occur, like web console or stomp
object message transformation. As deserialization of untrusted data can lead to
security flaws as demonstrated in various reports, this leaves the broker
vulnerable to this attack vector. Additionally, applications that consume
ObjectMessage type of messages can be vulnerable as they deserialize objects on
ObjectMessage.getObject() calls.