Now almost three years and several versions later is this security issue
still present when using a multi monitor setup?
** Changed in: light-locker (Ubuntu)
Status: Triaged => Incomplete
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https://bugs.launchpad.net/bugs/1515662
Title:
Major security issue with light-locker - console switching gives
access to other screens for a few seconds
Status in light-locker package in Ubuntu:
Incomplete
Status in lightdm package in Ubuntu:
Invalid
Bug description:
light-locker is completely insecure for X configurations with multiple
screens that are not using a single display.
My setup - 4 monitors, nvidia, each with separate screen.
If I lock screen and then control-alt-f7 back to X, only one single
screen is protected. After several seconds, it forces a switch to the
lock display, but in the mean time, the other three screens are
COMPLETELY UNPROTECTED.
It only takes a few seconds to launch a terminal and killall light-
locker and I have unrestricted access to all.
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