Red Hat Security Advisory 2017-0269-01 – The java-1.7.0-openjdk packages provide the OpenJDK 7 Java Runtime Environment and the OpenJDK 7 Java Software Development Kit. Security Fix: It was discovered that the RMI registry and DCG implementations in the RMI component of OpenJDK performed deserialization of untrusted inputs. A remote attacker could possibly use this flaw to execute arbitrary code with the privileges of RMI registry or a Java RMI application. This issue was addressed by introducing whitelists of classes that can be deserialized by RMI registry or DCG. These whitelists can be customized using the newly introduced sun.rmi.registry.registryFilter and sun.rmi.transport.dgcFilter security properties.