CVE-2023-38470 Reachable assertion in avahi_escape_label
A reachable assertion in Avahi's label escaping function allows attackers to cause a denial of service by triggering a crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-38470?
CVE-2023-38470 is a medium-severity denial of service vulnerability in Redhat Enterprise Linux, published on 2 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_escape_label() function.
Weakness: CWE-617
Which versions are affected by CVE-2023-38470?
It affects 2 products.
Linux distribution packages (1)
avahi openSUSE:Tumbleweed | All versions | 0.8-27.1 |
Products include Avahi Avahi, Redhat Enterprise Linux.
How do I fix CVE-2023-38470?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-38470 being exploited?
There is no known exploitation of CVE-2023-38470 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
Sources
Also known as ALPINE-CVE-2023-38470, AZL-31758, AZL-34550, BELL-CVE-2023-38470, CLEANSTART-2026-FV76384, DEBIAN-CVE-2023-38470 and 6 more.