CVE-2020-3273 Cisco Wireless LAN Controller 802.11 Generic Advertisement Service Denial of Service Vulnerability
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2020-3273?
CVE-2020-3273 is a high-severity vulnerability in Cisco Wireless LAN Controller (WLC), published on 15 Apr 2020.
Official description
A vulnerability in the 802.11 Generic Advertisement Service (GAS) frame processing function of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS). The vulnerability is due to incomplete input validation of the 802.11 GAS frames that are processed by an affected device. An attacker could exploit this vulnerability by sending a crafted 802.11 GAS frame over the air to an access point (AP), and that frame would then be relayed to the affected WLC. Also, an attacker with Layer 3 connectivity to the WLC could exploit this vulnerability by sending a malicious 802.11 GAS payload in a Control and Provisioning of Wireless Access Points (CAPWAP) packet to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS.
Weakness: CWE-119
Which versions are affected by CVE-2020-3273?
It affects 2 products.
Products include Cisco 5508 Wireless Controller Firmware, Cisco 5520 Wireless Controller Firmware.
How do I fix CVE-2020-3273?
No fix has been published for CVE-2020-3273 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3273 being exploited?
There is no known exploitation of CVE-2020-3273 in the wild and no public exploit code.
Other vulnerabilities in Cisco Wireless LAN Controller (WLC)
Sources
Also known as GHSA-27gx-92r4-wr88.