CVE-2023-20251 Denial of service in Cisco Mobility Express
An unauthenticated adjacent attacker can cause a device reboot via memory leaks by triggering multiple client connections, resulting in denial of service.
- 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-2023-20251?
CVE-2023-20251 is a medium-severity denial of service vulnerability in Cisco Mobility Express, published on 27 Sep 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 memory buffer of Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause memory leaks that could eventually lead to a device reboot. This vulnerability is due to memory leaks caused by multiple clients connecting under specific conditions. An attacker could exploit this vulnerability by causing multiple wireless clients to attempt to connect to an access point (AP) on an affected device. A successful exploit could allow the attacker to cause the affected device to reboot after a significant amount of time, resulting in a denial of service (DoS) condition.
Which versions are affected by CVE-2023-20251?
It affects 1 product.
Products include Cisco Mobility Express Software.
How do I fix CVE-2023-20251?
No fix has been published for CVE-2023-20251 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-2023-20251 being exploited?
There is no known exploitation of CVE-2023-20251 in the wild and no public exploit code.
Other vulnerabilities in Cisco Mobility Express
Sources
Also known as GHSA-96j4-p2p4-vfgj.