CVE-2021-20315 Security feature bypass in gnome-shell
A physical attacker can bypass screen lock to kill and launch applications as the locked user when specific GNOME extensions are enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-20315?
CVE-2021-20315 is a medium-severity vulnerability in gnome-shell, published on 18 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-667
Which versions are affected by CVE-2021-20315?
It affects 2 products.
Products include Centos Stream, Gnome Gnome-Shell.
How do I fix CVE-2021-20315?
No fix has been published for CVE-2021-20315 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-20315 being exploited?
There is no known exploitation of CVE-2021-20315 in the wild and no public exploit code.
Sources
Also known as GHSA-hpr5-wwh9-pjhf.