Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 allows attackers to obtain "Tomcat internals" information by leveraging the presence of an untrusted web application with a context.xml, web.xml, *.jspx, *.tagx, or *.tld XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04851013
https://bugzilla.redhat.com/show_bug.cgi?id=1069911
http://www.vmware.com/security/advisories/VMSA-2014-0008.html
http://www.securityfocus.com/bid/65768
http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.mandriva.com/security/advisories?name=MDVSA-2015:084
http://www.mandriva.com/security/advisories?name=MDVSA-2015:052
http://www.debian.org/security/2016/dsa-3530
http://www-01.ibm.com/support/docview.wss?uid=swg21678231
http://www-01.ibm.com/support/docview.wss?uid=swg21677147
http://www-01.ibm.com/support/docview.wss?uid=swg21675886
http://www-01.ibm.com/support/docview.wss?uid=swg21667883
http://tomcat.apache.org/security-8.html
http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-6.html
http://svn.apache.org/viewvc?view=revision&revision=1558828
http://svn.apache.org/viewvc?view=revision&revision=1549529
http://svn.apache.org/viewvc?view=revision&revision=1549528
http://secunia.com/advisories/59873
http://secunia.com/advisories/59724
http://secunia.com/advisories/59722
http://secunia.com/advisories/59036