(RHSA-2016:0723) Critical: java-1.6.0-openjdk security update

The java-1.6.0-openjdk packages provide the OpenJDK 6 Java Runtime Environment
and the OpenJDK 6 Java Software Development Kit.

Security Fix(es):

• Multiple flaws were discovered in the Serialization and Hotspot components in
  OpenJDK. An untrusted Java application or applet could use these flaws to
  completely bypass Java sandbox restrictions. (CVE-2016-0686, CVE-2016-0687)

• It was discovered that the RMI server implementation in the JMX component in
  OpenJDK did not restrict which classes can be deserialized when deserializing
  authentication credentials. A remote, unauthenticated attacker able to connect
  to a JMX port could possibly use this flaw to trigger deserialization flaws.
  (CVE-2016-3427)

• It was discovered that the JAXP component in OpenJDK failed to properly handle
  Unicode surrogate pairs used as part of the XML attribute values. Specially
  crafted XML input could cause a Java application to use an excessive amount of
  memory when parsed. (CVE-2016-3425)

• It was discovered that the Security component in OpenJDK failed to check the
  digest algorithm strength when generating DSA signatures. The use of a digest
  weaker than the key strength could lead to the generation of signatures that
  were weaker than expected. (CVE-2016-0695)