CVE-2019-19252 Missing authorization in n/a
The Linux kernel allows unauthorized write access to vcsu devices, enabling local attackers to modify virtual console screen data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-19252?
CVE-2019-19252 is a high-severity missing authorization vulnerability in Linux kernel, published on 25 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
vcs_write in drivers/tty/vt/vc_screen.c in the Linux kernel through 5.3.13 does not prevent write access to vcsu devices, aka CID-0c9acb1af77a.
Weakness: CWE-125
Which versions are affected by CVE-2019-19252?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2019-19252?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2019-19252 being exploited?
There is no known exploitation of CVE-2019-19252 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2019-19252, GHSA-3xcq-2f3r-vpwr, UBUNTU-CVE-2019-19252.