What is CVE-2021-20315?

CVE-2021-20315 is a medium-severity vulnerability in Gnome Gnome-Shell, classified under Improper Locking. CVSS score: 6.1/10. Published 2022-02-18.

How severe is CVE-2021-20315?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Gnome Gnome-Shell

CVE-2021-20315

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.

EPSS: 0.002 (9.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Gnome Gnome-shell
Centos Stream — versions 8
N/a Gnome-shell — versions gnome-shell 3.32.2-40.el8

Weakness classification (CWE)

CWE-667 — Improper Locking

References

secalert@redhat.com (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-20315?: CVE-2021-20315 is a medium-severity vulnerability in Gnome Gnome-Shell, classified under Improper Locking. CVSS score: 6.1/10. Published 2022-02-18.
How severe is CVE-2021-20315?: Medium severity. CVSS v3 base score is 6.1 out of 10.