Public bug reported: With frequently pressing the shortcut keys of Alt+Shift, we can hack and access through the lock screen without any given password.
See also https://www.youtube.com/watch?v=s968NpIpdiQ ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 Uname: Linux 4.4.0-31-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Fri Aug 5 13:11:19 2016 DistUpgraded: 2016-07-29 16:02:34,562 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory)) DistroCodename: xenial DistroVariant: ubuntu GraphicsCard: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0152] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [103c:18dd] InstallationDate: Installed on 2015-11-12 (266 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: Hewlett-Packard HP Compaq Pro 4300 AiO 20 PC ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=0dd8d4f8-3576-45ac-af4a-b79a43b4b17b ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to xenial on 2016-07-29 (6 days ago) dmi.bios.date: 01/30/2013 dmi.bios.vendor: AMI dmi.bios.version: 8.08 dmi.board.asset.tag: 3CR3200N71 dmi.board.name: 18DD dmi.board.vendor: PEGATRON CORPORATION dmi.board.version: 1.02 dmi.chassis.asset.tag: 3CR3200N71 dmi.chassis.type: 3 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnAMI:bvr8.08:bd01/30/2013:svnHewlett-Packard:pnHPCompaqPro4300AiO20PC:pvr1.00:rvnPEGATRONCORPORATION:rn18DD:rvr1.02:cvnHewlett-Packard:ct3:cvr: dmi.product.name: HP Compaq Pro 4300 AiO 20 PC dmi.product.version: 1.00 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.12.2+16.04.20160714-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Fri Aug 5 09:34:43 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 16930 vendor HWP xserver.version: 2:1.18.3-1ubuntu2.3 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 corruption ubuntu xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1610085 Title: I can hack and access the lock screen without any given password through the shortcut keys of Alt+Shift. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1610085/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
