The default configuration of Apache ActiveMQ before 5.8.0 enables a sample web application, which allows remote attackers to cause a denial of service (broker resource consumption) via HTTP requests.
https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12311210&version=12323282
https://issues.apache.org/jira/browse/AMQ-4124
https://fisheye6.atlassian.com/changelog/activemq?cs=1404998
http://www.securityfocus.com/bid/59401
http://rhn.redhat.com/errata/RHSA-2013-1029.html