CVE-2023-20067 Cisco IOS XE Software for Wireless LAN Controllers HTTP Client Profiling Denial of Service Vulnerability

High 7.4 Published 23 Mar 2023 Updated 25 Oct 2024

An unauthenticated adjacent attacker can cause a denial of service on Cisco IOS XE Wireless LAN Controllers by sending crafted traffic through a wireless access point.

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-2023-20067?

CVE-2023-20067 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 23 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the HTTP-based client profiling feature of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of received traffic. An attacker could exploit this vulnerability by sending crafted traffic through a wireless access point. A successful exploit could allow the attacker to cause CPU utilization to increase, which could result in a DoS condition on an affected device and could cause new wireless client associations to fail. Once the offending traffic stops, the affected system will return to an operational state and new client associations will succeed.

Weakness: CWE-770

Which versions are affected by CVE-2023-20067?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2023-20067?

No fix has been published for CVE-2023-20067 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-2023-20067 being exploited?

There is no known exploitation of CVE-2023-20067 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-vxxf-3gj9-xh73.