Gufw is really affected.
See below:

$ apt-cache policy gufw
gufw:
  Installed: 17.10.0-0ubuntu1
  Candidate: 17.10.0-0ubuntu1
  Version table:
 *** 17.10.0-0ubuntu1 500
        500 http://ru.archive.ubuntu.com/ubuntu artful/universe i386 Packages
        100 /var/lib/dpkg/status


artful@artful:~$ dpkg -L gufw | grep desktop
/etc/gufw/app_profiles/remote-desktop-protocol.jhansonxi
/usr/share/applications/gufw.desktop
artful@artful:~$ cat /usr/share/applications/gufw.desktop | grep Exec
Exec=gufw
artful@artful:~$ gufw
# !!! # enter password here # !!! #
No protocol specified
Unable to init server: Could not connect: Connection refused
No protocol specified
Unable to init server: Could not connect: Connection refused

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:3873): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:3873): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed
/usr/bin/gufw-pkexec: line 13:  3873 Segmentation fault      python3 ${LOCATIONS[${i}]} $1