A JavaScript focused window could overlap the fullscreen notification in Fullscreen in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to obscure the full screen warning via a crafted HTML page.Referenceshttps://chromereleases.googleblog.com/2018/04/stable-channel-update-for-desktop.htmlhttps://crbug.com/776418https://security.gentoo.org/glsa/201804-22https://www.debian.org/security/2018/dsa-4182http://www.securityfocus.com/bid/103917https://access.redhat.com/errata/RHSA-2018:1195
