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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (9.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- GNOME Gnome-Shell
- Centos Stream — versions 8
- Gnome-Shell — versions gnome-shell 3.32.2-40.el8
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (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.