Marking the bug as "Fix Released" for Unity 7.2, coz Unity 7.2.6 update
got released for Ubuntu 14.04LTS
** Changed in: unity/7.2
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1460626
Title:
Unity Lockscreen still shows unlocked desktop while shutting down
Status in Unity:
Fix Released
Status in Unity 7.2 series:
Fix Released
Status in indicator-session package in Ubuntu:
Fix Released
Status in unity package in Ubuntu:
Fix Released
Status in indicator-session source package in Trusty:
Fix Released
Status in unity source package in Trusty:
Fix Released
Bug description:
This was reported and supposedly fixed in
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1370017, but the
bug is still present in the current Unity version in Trusty. I've
reported it in that bug already, but got ignored, so I'm opening a new
bug about it.
[Impact and Test Case]
Steps to reproduce:
1 - Log into Unity
2 - Open a terminal.
3 - Lock the screen
4 - From the lockscreen, tell the computer to shut down / restart
Expected behavior:
* Session programs are closed while the screen is still locked
* During shutdown, no user interaction is possible
Observed behavior:
* The lockscreen is gone immediately, with the rest of compiz (e.g. window
decorations are not present)
* But it's possible to interact with programs that are still running in the
session for about 3 seconds
Observed on an updated Trusty machine, running unity version
7.2.5+14.04.20150521.1-0ubuntu1
This bug is a security vulnerability because during those 3 seconds it
could be possible to access and interact with sensitive information.
Yes, it's short, but you could take a picture or even rm -rf / if
there happened to be a root console available.
=====
[Impact]
A lockscreen should hide the screen content no matter what. A the moment
there is no easy way to provide a good shutdown experience if the screen is
locked so it's better to disable it. Please note that you can still shut down
the system if the screen is locked just switching to unity-greeter using
"Swtich Account..." (it's safe in this case)
Needs to be backported to 14.04 LTS because can affect security.
[Test Case]
1 - Lock the screen
2 - Push the hw shutdown button.
3 - Make sure that there is no shutdown option in the end of session dialog.
1 - Lock the screen
2 - Open the session indicator
3 - Make sure there is no shutdown option in the drop down menu
[Regression Potential]
None.
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