high
8.6
CWE
400
Advisory Published
Updated

CVE-2020-3560: Cisco Aironet Access Points UDP Flooding Denial of Service Vulnerability

First published: Thu Sep 24 2020(Updated: )

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.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Wireless LAN Controller>=8.9<8.10.112.0
Cisco Wireless LAN Controller Software<8.5.161.0
Cisco Wireless LAN Controller Software>=8.6<8.8.130.0
Cisco 1111-4pwe
Cisco 1111-8plteeawb
Cisco 1111-8pwb
Cisco 1113-8plteeawe
Cisco 1113-8pmwe
Cisco 1113-8pwe
Cisco 1116-4plteeawe
Cisco 1116-4pwe
Cisco 1117-4plteeawe
Cisco 1117-4pmlteeawe
Cisco 1117-4pmwe
Cisco 1117-4pwe
Cisco Aironet 1542d
Cisco Aironet 1542i
Cisco Aironet 1562d
Cisco Aironet 1562e
Cisco Aironet 1562i
Cisco Aironet 1815
Cisco Aironet 1830e
Cisco Aironet 1830i
Cisco Aironet 1850e
Cisco Aironet 1850i
Cisco Aironet 2800e
Cisco Aironet 2800i
Cisco Aironet 3800e
Cisco Aironet 3800i
Cisco Aironet 3800p
Cisco Aironet 4800
Cisco Business 140ac
Cisco Business 145ac
Cisco Business 240ac
Cisco Catalyst 9105
Cisco Catalyst 9115
Cisco Catalyst 9117
Cisco Catalyst 9120
Cisco Catalyst 9130
Cisco Catalyst Iw6300
Cisco Esw-6300-con-x-k9
Cisco Business Access Points>=10.0<10.1.1.0
Cisco Access Points<16.12.4a
Cisco Catalyst 9800-40
Cisco Catalyst 9800-80
Cisco Catalyst 9800-cl
Cisco Catalyst 9800-l
Cisco Catalyst 9800-l-c
Cisco Catalyst 9800-l-f
Cisco Aironet Access Point Software=8.5\(154.27\)
Cisco Aironet Access Point Software=8.8\(125.0\)
Cisco Aironet Access Point Software=8.10\(105.0\)
Cisco Aironet Access Point Software=8.10\(105.4\)
Cisco Aironet Access Point Software=17.1.2.6
Cisco Aironet Access Point Software=17.1.2.9
Cisco Aironet Access Point Software=17.2.0.37

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Reference Links

Frequently Asked Questions

  • What is CVE-2020-3560?

    CVE-2020-3560 is a vulnerability in Cisco Aironet Access Points (APs) that can allow an unauthenticated remote attacker to cause a denial of service (DoS) on an affected device.

  • How severe is CVE-2020-3560?

    CVE-2020-3560 has a severity rating of 8.6 (high).

  • How does CVE-2020-3560 work?

    CVE-2020-3560 is caused by improper resource management while processing specific packets, allowing an attacker to exploit the vulnerability and cause a DoS.

  • Which devices are affected by CVE-2020-3560?

    Cisco Aironet Access Points (APs) running certain versions of Cisco Wireless LAN Controller, Cisco Wireless LAN Controller Software, and Cisco Access Points are affected by CVE-2020-3560.

  • How can I fix CVE-2020-3560?

    To fix CVE-2020-3560, it is recommended to update the affected Cisco Aironet Access Points (APs) to a version that addresses the vulnerability.

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