    def test_is_writable(self):
        """ default_dir has to be writable """
        path = catalog.default_dir()
        name = os.path.join(path,'dummy_catalog')
        test_file = open(name,'w')
        try:
            test_file.write('making sure default location is writable\n')
        finally:
            test_file.close()
            os.remove(name)
The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.