It was discovered that the JMX component in OpenJDK failed to properly handle MBean connection proxy classes. An untrusted Java application or applet could use this flaw to bypass Java sandbox restrictions.
Public now via Oracle Critical Patch Update - July 2015. Fixed in Oracle Java SE 6u101, 7u85, and 8u51. External References: http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html#AppendixJAVA
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Via RHSA-2015:1230 https://rhn.redhat.com/errata/RHSA-2015-1230.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 6 Via RHSA-2015:1229 https://rhn.redhat.com/errata/RHSA-2015-1229.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Via RHSA-2015:1228 https://rhn.redhat.com/errata/RHSA-2015-1228.html
OpenJDK 8 upstream commit: http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/96d1615ba9e7
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 5 Oracle Java for Red Hat Enterprise Linux 7 Oracle Java for Red Hat Enterprise Linux 6 Via RHSA-2015:1243 https://rhn.redhat.com/errata/RHSA-2015-1243.html
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 6 Oracle Java for Red Hat Enterprise Linux 7 Oracle Java for Red Hat Enterprise Linux 5 Via RHSA-2015:1242 https://rhn.redhat.com/errata/RHSA-2015-1242.html
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 6 Oracle Java for Red Hat Enterprise Linux 7 Via RHSA-2015:1241 https://rhn.redhat.com/errata/RHSA-2015-1241.html
This issue has been addressed in the following products: Supplementary for Red Hat Enterprise Linux 5 Supplementary for Red Hat Enterprise Linux 6 Via RHSA-2015:1486 https://rhn.redhat.com/errata/RHSA-2015-1486.html
This issue has been addressed in the following products: Supplementary for Red Hat Enterprise Linux 7 Supplementary for Red Hat Enterprise Linux 6 Via RHSA-2015:1485 https://rhn.redhat.com/errata/RHSA-2015-1485.html
This issue has been addressed in the following products: Supplementary for Red Hat Enterprise Linux 5 Via RHSA-2015:1488 https://rhn.redhat.com/errata/RHSA-2015-1488.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Via RHSA-2015:1526 https://rhn.redhat.com/errata/RHSA-2015-1526.html
This issue has been addressed in the following products: Supplementary for Red Hat Enterprise Linux 6 Supplementary for Red Hat Enterprise Linux 5 Via RHSA-2015:1544 https://rhn.redhat.com/errata/RHSA-2015-1544.html
This issue has been addressed in the following products: Red Hat Satellite Server v 5.7 Red Hat Satellite Server v 5.6 Via RHSA-2015:1604 https://rhn.redhat.com/errata/RHSA-2015-1604.html