Apache Santuario XML Security for Java before 1.5.6, when applying Transforms, allows remote attackers to cause a denial of service (memory consumption) via crafted Document Type Definitions (DTDs), related to signatures.
https://www.tenable.com/security/tns-2018-15
https://exchange.xforce.ibmcloud.com/vulnerabilities/89891
http://www.securitytracker.com/id/1029524
http://www.securityfocus.com/bid/64437
http://secunia.com/advisories/55639
http://seclists.org/fulldisclosure/2013/Dec/169
http://santuario.apache.org/secadv.data/cve-2013-4517.txt.asc
http://rhn.redhat.com/errata/RHSA-2015-0851.html
http://rhn.redhat.com/errata/RHSA-2015-0850.html
http://rhn.redhat.com/errata/RHSA-2015-0675.html
http://rhn.redhat.com/errata/RHSA-2014-1728.html
http://rhn.redhat.com/errata/RHSA-2014-1727.html
http://rhn.redhat.com/errata/RHSA-2014-1726.html
http://rhn.redhat.com/errata/RHSA-2014-1725.html
http://rhn.redhat.com/errata/RHSA-2014-0195.html
http://rhn.redhat.com/errata/RHSA-2014-0172.html
http://rhn.redhat.com/errata/RHSA-2014-0171.html
http://rhn.redhat.com/errata/RHSA-2014-0170.html
http://packetstormsecurity.com/files/124554/Java-XML-Signature-Denial-Of-Service-Attack.html