CVE-2020-3262 Cisco Wireless LAN Controller CAPWAP Denial of Service Vulnerability
Unauthenticated remote attackers can cause a denial of service on Cisco Wireless LAN Controllers by sending malformed CAPWAP packets, requiring a software patch.
- 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-2020-3262?
CVE-2020-3262 is a high-severity denial of service vulnerability in Cisco Aironet Access Point Software, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol handler of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to restart, resulting in a DoS condition.
Weakness: CWE-20
Which versions are affected by CVE-2020-3262?
It affects 2 products.
Products include Cisco 5508 Wireless Controller Firmware, Cisco 5520 Wireless Controller Firmware.
How do I fix CVE-2020-3262?
No fix has been published for CVE-2020-3262 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-2020-3262 being exploited?
There is no known exploitation of CVE-2020-3262 in the wild and no public exploit code.
Other vulnerabilities in Cisco Aironet Access Point Software
Sources
Also known as GHSA-h4wq-fxpq-gmg2.