CVE-2020-3560 Cisco Aironet Access Points UDP Flooding Denial of Service Vulnerability
Remote attackers can cause denial of service on Cisco Aironet Access Points by sending crafted UDP packets, disrupting client traffic or forcing device reloads.
- 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-2020-3560?
CVE-2020-3560 is a high-severity denial of service vulnerability in Cisco Wireless Lan Controller Software, published on 24 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in Cisco Aironet Access Points (APs) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on an affected device. The vulnerability is due to improper resource management while processing specific packets. An attacker could exploit this vulnerability by sending a series of crafted UDP packets to a specific port on an affected device. A successful exploit could either allow the attacker to tear down the connection between the AP and the wireless LAN controller, resulting in the affected device not being able to process client traffic, or cause the vulnerable device to reload, triggering a DoS condition. After the attack, the affected device should automatically recover its normal functions without manual intervention.
Weakness: CWE-400
Which versions are affected by CVE-2020-3560?
It affects 5 products.
Products include Cisco Access Points, Cisco Aironet Access Point Software, Cisco Business Access Points, Cisco Wireless Lan Controller, Cisco Wireless Lan Controller Software.
How do I fix CVE-2020-3560?
No fix has been published for CVE-2020-3560 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-2020-3560 being exploited?
There is no known exploitation of CVE-2020-3560 in the wild and no public exploit code.
Other vulnerabilities in Cisco Wireless Lan Controller Software
- CVE-2020-3552 Cisco Aironet Access Points Ethernet Wired Clients Denial of Service Vulnerability
- CVE-2019-1920 Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability
- CVE-2018-0441 Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability
- CVE-2020-3559 Cisco Aironet Access Point Authentication Flood Denial of Service Vulnerability
Sources
Also known as GHSA-8grp-f8hg-jmhh.