Cisco Wireless LAN Controller UDP Packet resource consumption

Summaryinfo

A vulnerability classified as problematic was found in Cisco Wireless LAN Controller. Affected by this issue is some unknown functionality. The manipulation as part of UDP Packet results in resource consumption. This vulnerability is known as CVE-2020-3560. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Cisco Wireless LAN Controller (Wireless LAN Software) (version unknown). Affected is an unknown function. The manipulation as part of a UDP Packet leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

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.

The weakness was published 09/24/2020 as cisco-sa-aironet-dos-VHr2zG9y as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2020-3560 since 12/12/2019. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Wireless LAN Software

Vendor

• Cisco

Name

• Wireless LAN Controller

License

• commercial

Website

• Vendor: https://www.cisco.com/

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