/usr/share/dbus-1/interfaces/ is in systemd 44-11+deb7u4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dbus-1/interfaces/org.freedesktop.hostname1.xml
/usr/share/dbus-1/interfaces/org.freedesktop.locale1.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Automount.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Device.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Job.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Manager.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Mount.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Path.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Service.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Snapshot.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Socket.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Swap.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Target.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Timer.xml
/usr/share/dbus-1/interfaces/org.freedesktop.systemd1.Unit.xml
/usr/share/dbus-1/interfaces/org.freedesktop.timedate1.xml