Apache ActiveMQ 5.x before 5.13.0 does not restrict the classes that can be serialized in the broker, which allows remote attackers to execute arbitrary code via a crafted serialized Java Message Service (JMS) ObjectMessage object.
https://issues.apache.org/jira/browse/AMQ-6013
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05385680
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
http://www.openwall.com/lists/oss-security/2015/12/08/6
http://www.debian.org/security/2016/dsa-3524
http://rhn.redhat.com/errata/RHSA-2016-2036.html
http://rhn.redhat.com/errata/RHSA-2016-2035.html
http://rhn.redhat.com/errata/RHSA-2016-0489.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174537.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174371.html
http://activemq.apache.org/security-advisories.data/CVE-2015-5254-announcement.txt