def _inject_net_into_fs(net, fs, execute=None):
    """Inject /etc/network/interfaces into the filesystem rooted at fs.

    net is the contents of /etc/network/interfaces.
    """
    netdir = _join_and_check_path_within_fs(fs, 'etc', 'network')
    utils.execute('mkdir', '-p', netdir, run_as_root=True)
    utils.execute('chown', 'root:root', netdir, run_as_root=True)
    utils.execute('chmod', 755, netdir, run_as_root=True)

    netfile = os.path.join('etc', 'network', 'interfaces')
    _inject_file_into_fs(fs, netfile, net)
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.