CVE-2021-20315
Published: 18 February 2022
A locking protection bypass flaw was found in some versions of gnome-shell as shipped within CentOS Stream 8, when the "Application menu" or "Window list" GNOME extensions are enabled. This flaw allows a physical attacker who has access to a locked system to kill existing applications and start new ones as the locked user, even if the session is still locked.
Notes
Author | Note |
---|---|
alexmurray | This issue was specific to Centos 8 Stream, in particular as a result of the backport done in https://bugzilla.redhat.com/show_bug.cgi?id=1651378 so does not affect gnome-shell as packaged in Ubuntu |
Priority
Status
Package | Release | Status |
---|---|---|
gnome-shell Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
focal |
Not vulnerable
|
|
hirsute |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Ignored
(end of standard support)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.1 |
Attack vector | Physical |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |