CVE-2024-5872 Denial of service in EOS
Crafted packets with incorrect VLAN tags can cause control plane instability and route flaps on Arista EOS network devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-5872?
CVE-2024-5872 is a medium-severity denial of service vulnerability in Arista Networks EOS, published on 10 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
On affected platforms running Arista EOS, a specially crafted packet with incorrect VLAN tag might be copied to CPU, which may cause incorrect control plane behavior related to the packet, such as route flaps, multicast routes learnt, etc.
Which versions are affected by CVE-2024-5872?
How do I fix CVE-2024-5872?
No fix has been published for CVE-2024-5872 yet. Limit exposure of the affected software until one is available.
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-2024-5872 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-5872 exists.
Sources
Also known as GHSA-wq57-x73w-8875.