CVE-2023-24626 Privilege escalation in n/a
Local users can send privileged signals to arbitrary processes via GNU Screen, causing denial of service or process disruption.
- 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-2023-24626?
CVE-2023-24626 is a medium-severity vulnerability in n/a, published on 8 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
Weakness: CWE-732
Which versions are affected by CVE-2023-24626?
It affects 1 product.
Linux distribution packages (1)
screen openSUSE:Tumbleweed | All versions | 4.9.1-1.1 |
Products include Gnu Screen.
How do I fix CVE-2023-24626?
Apply the vendor's patch.
Is CVE-2023-24626 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-24626 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as ALPINE-CVE-2023-24626, AZL-26216, CLSA-2026-1776934758, CLSA-2026-1776940861, DEBIAN-CVE-2023-24626, GHSA-wr4w-95gx-6cfr and 5 more.