CVE-2024-56317 Denial of service in Matter
Attackers can cause denial of service in Matter devices by triggering input validation failures during ACL updates, preventing access control restoration.
- 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-2024-56317?
CVE-2024-56317 is a high-severity denial of service vulnerability in Matter, published on 18 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Matter (aka connectedhomeip or Project CHIP) through 1.4.0.0, the WriteAcl function deletes all existing ACL entries first, and then attempts to recreate them based on user input. If input validation fails during decoding, the process stops, and no entries are restored by access-control-server.cpp, i.e., a denial of service.
Weakness: CWE-281
Which versions are affected by CVE-2024-56317?
How do I fix CVE-2024-56317?
No fix has been published for CVE-2024-56317 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-2024-56317 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-56317 exists.
Sources
Also known as GHSA-64g8-8mm8-6qp6.