/usr/share/java/jboss-jmx.jar is in libjboss-jmx-java 4.2.3.GA-8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/jboss-jmx-4.2.3.GA.jar
/usr/share/java/jboss-jmx-4.2.3.GA.jar