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Message #154542
[Bug 1280300] Re: Desktop contents displayed on resume, before lock screen is shown
Still seeing this bug in Ubuntu 15.10 64-bit with Unity 3D, and have
seen it in every Ubuntu version going back to at least 2011, across
several different laptops from different manufacturers (Chromebook,
Thinkpad, and Dell something-or-other). It happens reliably every time
I resume from suspend - doesn't matter if I suspended through the menu
or by closing the lid.
How is this not considered a major security bug? If someone steals my
laptop they can see anything I was doing before suspending. Information
leakage like this should be treated as high priority.
--
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Packages, which is subscribed to gnome-screensaver in Ubuntu.
https://bugs.launchpad.net/bugs/1280300
Title:
Desktop contents displayed on resume, before lock screen is shown
Status in gnome-screensaver package in Ubuntu:
Confirmed
Bug description:
I am running 14.04. When I resume from sleep, the contents of my
desktop (including any open windows, emails, etc) are displayed
onscreen briefly before the unlock screen is shown. This potentially
allows an attacker to view the contents of a locked screen.
To reproduce:
1) Suspend a machine, e.g. by closing the lid
2) Resume the machine
Expected results:
Upon resume, the first thing shown onscreen is the screensaver unlock screen.
Actual results:
Upon resume, the first thing shown onscreen is the set of open windows that were displayed before the machine was put to sleep. After a second or two, the unlock screen is drawn and you have to enter a password to unlock the machine.
This is reproducible on my system.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gnome-screensaver 3.6.1-0ubuntu9
ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
Uname: Linux 3.13.0-8-generic x86_64
ApportVersion: 2.13.2-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 14 09:05:50 2014
DistributionChannelDescriptor:
# This is a distribution channel descriptor
# For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-precise-amd64-20130203-1
EcryptfsInUse: Yes
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GsettingsGnomeSession:
org.gnome.desktop.session session-name 'ubuntu'
org.gnome.desktop.session idle-delay uint32 300
InstallationDate: Installed on 2013-12-02 (73 days ago)
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50
SourcePackage: gnome-screensaver
UpgradeStatus: Upgraded to trusty on 2014-02-12 (1 days ago)
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