CVE-2022-20622 Cisco Embedded Wireless Controller with Catalyst Access Points IP Flood Denial of Service Vulnerability

High 8.6 Published 15 Apr 2022 Updated 6 Nov 2024

An unauthenticated remote attacker can cause a Cisco Embedded Wireless Controller to reload by flooding the management interface with IP traffic.

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-2022-20622?

CVE-2022-20622 is a high-severity denial of service vulnerability in Cisco Aironet Access Point Software, published on 15 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in IP ingress packet processing of the Cisco Embedded Wireless Controller with Catalyst Access Points Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, causing a denial of service (DoS) condition. The device may experience a performance degradation in traffic processing or high CPU usage prior to the unexpected reload. This vulnerability is due to improper rate limiting of IP packets to the management interface. An attacker could exploit this vulnerability by sending a steady stream of IP traffic at a high rate to the management interface of the affected device. A successful exploit could allow the attacker to cause the device to reload.

Weakness: CWE-770

Which versions are affected by CVE-2022-20622?

It affects 1 product.

Products include Cisco Aironet Access Point Software.

How do I fix CVE-2022-20622?

No fix has been published for CVE-2022-20622 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-2022-20622 being exploited?

There is no known exploitation of CVE-2022-20622 in the wild and no public exploit code.

Sources

Also known as GHSA-6gj6-7h4g-v2wc.