*** This bug is a security vulnerability ***
You have been subscribed to a public security bug by Marc Deslauriers
(mdeslaur):
This happened after my 5y old daughter hammered the keyboard with random
keys, so I literally have no idea how to reproduce it.
On the lock screen, I was unable to type anything, as if I'd pressed
enter but the password was still being validated. Then I hit alt-tab and
saw compiz's ring switcher activate. I tried to type my password a
couple of times but the screen didn't unlock. Eventually I did switch
user and finally managed to log in.
When I looked at the terminal, I realized what I was suspecting moments
before. My password went through the lock window and ended up on the
terminal (and also on Firefox in a Google search form).
> gimp: GEGL-WARNING:
> (../gegl/buffer/gegl-tile-handler-cache.c:1076):gegl_tile_cache_destroy:
> runtime check failed: (g_queue_is_empty (&cache_queue))
> EEEEeEeek! 1 GeglBuffers leaked
> CABBDCDDmypassword
> CABBDCDDmypassword: command not found
> [1]+ Done gimp vlcsnap-2021-09-21-17h03m59s833-2.xcf
I think this should definitely not happen, now the problem is
understanding how it happened. This is my version of gnome-screensaver:
ii gnome-screensaver 3.6.1-11ubuntu4 amd64 Screensaver and
screen lock formerly used in GNOME
Ubuntu is 20.04 but it's not a fresh install. Please tell me how I can
debug this further, looks like a fairly nasty bug.
** Affects: gnome-screensaver (Ubuntu)
Importance: Undecided
Status: New
** Tags: gnome-screensaver keyboard leak
--
gnome-screensaver locked screen leaks text to underlying windows
https://bugs.launchpad.net/bugs/1944464
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