I actually have no gnome extensions installed other than the ones that come preinstalled with Ubuntu. (Screenshot attached.) I also didn't change any settings concerning extensions.
** Attachment added: "extensions.png" https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1882353/+attachment/5381771/+files/extensions.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell-extension-ubuntu-dock in Ubuntu. https://bugs.launchpad.net/bugs/1882353 Title: Ubuntu Dock and Top bar accessible from lockscreen Status in gnome-shell-extension-ubuntu-dock package in Ubuntu: New Bug description: This is a very serious security issue: When I lock my desktop with SUPER (windows) + L my screen gets locked and goes to black. Sometimes when I return to my PC and move my mouse to turn my screen back on I notice that the Ubuntu Dock + the Top Bar are accessible from the lockscreen. I unfortunately can't remember if they were accessible from the moment I locked the screen or became accessible after returning from fade to black. (This is not the first time this issue happened.) I was able to open the settings menu from the top bar and use all indicators. You can actually start the programs in the Ubuntu Dock and give keyboard inputs to them. For example I was able to start the terminal emulator from the lock screen and run firefox and other applications. So an attacker could run arbitrary commands with user privileges from the lockscreen! The indicators drop down menus were fully visible on the lock screen while the Dock applications remained hidden "behind" the lockscreen (however still accessible via keyboard as described above). I have attached a screenshot of the bug. I unfortunately had no camera at hand to film me running terminal commands. Please contact me if you need additional information. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-shell-extension-ubuntu-dock 67ubuntu20.04.5 ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34 Uname: Linux 5.4.0-33-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.2 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sat Jun 6 13:35:28 2020 InstallationDate: Installed on 2015-12-22 (1627 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) PackageArchitecture: all SourcePackage: gnome-shell-extension-ubuntu-dock UpgradeStatus: Upgraded to focal on 2020-04-25 (42 days ago) modified.conffile..etc.default.apport: [modified] mtime.conffile..etc.default.apport: 2015-12-23T12:07:53.769719 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1882353/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
