CVE-2024-20354 Denial of service in Cisco Aironet Access Point Software

Medium 4.7 Published 27 Mar 2024 Updated 1 Aug 2024

An unauthenticated adjacent attacker can cause a denial of service on Cisco Aironet Access Points by sending malformed wireless frames.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-20354?

CVE-2024-20354 is a medium-severity denial of service vulnerability in Cisco Ios Xe, published on 27 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the handling of encrypted wireless frames of Cisco Aironet Access Point (AP) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to incomplete cleanup of resources when dropping certain malformed frames. An attacker could exploit this vulnerability by connecting as a wireless client to an affected AP and sending specific malformed frames over the wireless connection. A successful exploit could allow the attacker to cause degradation of service to other clients, which could potentially lead to a complete DoS condition.

Weakness: CWE-460

Which versions are affected by CVE-2024-20354?

It affects 2 products.

Products include Cisco Ios Xe, Cisco Wireless Lan Controller Software.

How do I fix CVE-2024-20354?

No fix has been published for CVE-2024-20354 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-2024-20354 being exploited?

There is no known exploitation of CVE-2024-20354 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-55h4-826f-9gpq.