CVE-2023-38472 Reachable assertion in avahi_rdata_parse
A reachable assertion in Avahi's avahi_rdata_parse 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-2023-38472?
CVE-2023-38472 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_rdata_parse() function.
Weakness: CWE-617
Which versions are affected by CVE-2023-38472?
It affects 2 products.
Linux distribution packages (23)
avahi SUSE:Linux Enterprise Micro 5.2 | All versions | 0.7-150100.3.35.1 |
avahi SUSE:Linux Enterprise Micro 5.3 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Micro 5.4 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Micro 5.5 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 0.8-150400.7.13.1 |
avahi-glib2 SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Module for Basesystem 15 SP5 | All versions | 0.8-150400.7.13.1 |
avahi-glib2 SUSE:Linux Enterprise Module for Basesystem 15 SP5 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Module for Desktop Applications 15 SP4 | All versions | 0.8-150400.7.13.1 |
avahi-glib2 SUSE:Linux Enterprise Module for Desktop Applications 15 SP4 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Module for Desktop Applications 15 SP5 | All versions | 0.8-150400.7.13.1 |
avahi-glib2 SUSE:Linux Enterprise Module for Desktop Applications 15 SP5 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Module for Package Hub 15 SP4 | All versions | 0.8-150400.7.13.1 |
avahi SUSE:Linux Enterprise Module for Package Hub 15 SP5 | All versions | 0.8-150400.7.13.1 |
avahi openSUSE:Leap 15.4 | All versions | 0.8-150400.7.13.1 |
avahi-glib2 openSUSE:Leap 15.4 | All versions | 0.8-150400.7.13.1 |
avahi-qt5 openSUSE:Leap 15.4 | All versions | 0.8-150400.7.13.1 |
avahi openSUSE:Leap 15.5 | All versions | 0.8-150400.7.13.1 |
avahi-glib2 openSUSE:Leap 15.5 | All versions | 0.8-150400.7.13.1 |
avahi-qt5 openSUSE:Leap 15.5 | All versions | 0.8-150400.7.13.1 |
avahi openSUSE:Leap Micro 5.3 | All versions | 0.8-150400.7.13.1 |
avahi openSUSE:Leap Micro 5.4 | All versions | 0.8-150400.7.13.1 |
avahi openSUSE:Tumbleweed | All versions | 0.8-31.1 |
Products include Avahi Avahi, Redhat Enterprise Linux.
How do I fix CVE-2023-38472?
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-2023-38472 being exploited?
There is no known exploitation of CVE-2023-38472 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
Sources
Also known as ALPINE-CVE-2023-38472, AZL-31759, AZL-34552, BELL-CVE-2023-38472, CLEANSTART-2026-GA41131, DEBIAN-CVE-2023-38472 and 7 more.