Provide references for CVE-2018-20681.
Where can I find more information about CVE-2018-20681?
References are available at: https://github.com/mate-desktop/mate-screensaver/pull/167, https://github.com/mate-desktop/mate-screensaver/issues/170, https://github.com/mate-desktop/mate-screensaver/issues/152, https://github.com/mate-desktop/mate-screensaver/issues/155.