/usr/share/java/guacamole-auth-noauth.jar is in guacamole 0.9.9+dfsg-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/guacamole-auth-noauth-0.9.9.jar
/usr/share/java/guacamole-auth-noauth-0.9.9.jar