/usr/share/java/maven-ear-plugin.jar is in libmaven-ear-plugin-java 2.3.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../maven-repo/org/apache/maven/plugins/maven-ear-plugin/2.3.2/maven-ear-plugin-2.3.2.jar