It was discovered that the Hotspot component of OpenJDK did not properly check Java Debug Wire Protocol (JDWP) packets, which could possibly allow HTTP requests issues by a web browser to be interpreted as valid JDWP messages. An attacker could possibly use this flaw to send debugging commands to a Java program or applet running with debugging enabled if they could make victim's browser send HTTP requests to the JDWP port of the debugged application.
Public now via Oracle CPU October 2016, fixed in Oracle JDK 8u111, 7u121, and 6u131. External References: http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html#AppendixJAVA
OpenJDK 8 upstream commit: http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/e47a4a3f3e54
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Via RHSA-2016:2079 https://rhn.redhat.com/errata/RHSA-2016-2079.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-2016:2088 https://rhn.redhat.com/errata/RHSA-2016-2088.html
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 5 Oracle Java for Red Hat Enterprise Linux 6 Oracle Java for Red Hat Enterprise Linux 7 Via RHSA-2016:2090 https://rhn.redhat.com/errata/RHSA-2016-2090.html
This issue has been addressed in the following products: Oracle Java for Red Hat Enterprise Linux 5 Oracle Java for Red Hat Enterprise Linux 6 Oracle Java for Red Hat Enterprise Linux 7 Via RHSA-2016:2089 https://rhn.redhat.com/errata/RHSA-2016-2089.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Supplementary Via RHSA-2016:2138 https://rhn.redhat.com/errata/RHSA-2016-2138.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Supplementary Red Hat Enterprise Linux 6 Supplementary Via RHSA-2016:2137 https://rhn.redhat.com/errata/RHSA-2016-2137.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Supplementary Red Hat Enterprise Linux 7 Supplementary Via RHSA-2016:2136 https://rhn.redhat.com/errata/RHSA-2016-2136.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Supplementary Red Hat Enterprise Linux 6 Supplementary Via RHSA-2016:2659 https://rhn.redhat.com/errata/RHSA-2016-2659.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2016:2658 https://rhn.redhat.com/errata/RHSA-2016-2658.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2017:0061 https://rhn.redhat.com/errata/RHSA-2017-0061.html
This issue has been addressed in the following products: Red Hat Satellite 5.6 Red Hat Satellite 5.7 Via RHSA-2017:1216 https://access.redhat.com/errata/RHSA-2017:1216