CVE-2023-20176 Denial of service in Cisco Aironet Access Point Software
An unauthenticated remote attacker can cause a denial of service on Cisco access points by sending high-rate traffic to disrupt DTLS sessions.
- 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-2023-20176?
CVE-2023-20176 is a medium-severity denial of service vulnerability in Cisco Aironet Access Point Software, published on 27 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the networking component of Cisco access point (AP) software could allow an unauthenticated, remote attacker to cause a temporary disruption of service. This vulnerability is due to overuse of AP resources. An attacker could exploit this vulnerability by connecting to an AP on an affected device as a wireless client and sending a high rate of traffic over an extended period of time. A successful exploit could allow the attacker to cause the Datagram TLS (DTLS) session to tear down and reset, causing a denial of service (DoS) condition.
Weakness: CWE-400
Which versions are affected by CVE-2023-20176?
It affects 5 products.
Products include Cisco Catalyst 9124 Firmware, Cisco Catalyst 9130 Firmware, Cisco Catalyst 9136 Firmware, Cisco Catalyst 9164 Firmware, Cisco Catalyst 9166 Firmware.
How do I fix CVE-2023-20176?
No fix has been published for CVE-2023-20176 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-2023-20176 being exploited?
There is no known exploitation of CVE-2023-20176 in the wild and no public exploit code.
Sources
Also known as GHSA-68hh-p8m2-hpx3.