Directory traversal vulnerability in JBoss Undertow 1.0.x before 1.0.17, 1.1.x before 1.1.0.CR5, and 1.2.x before 1.2.0.Beta3, when running on Windows, allows remote attackers to read arbitrary files via a .. (dot dot) in a resource URI.
https://issues.jboss.org/browse/WFLY-4020
https://issues.jboss.org/browse/UNDERTOW-338
https://bugzilla.redhat.com/show_bug.cgi?id=1157478