CVE-2020-3497: Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerabilities
First published: Thu Sep 24 2020(Updated: )
Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition of an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit these vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition on the affected device.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE | =16.12.1 | |
| Cisco 9800-40 | ||
| Cisco 9800-80 | ||
| Cisco 9800-cl | ||
| Cisco 9800-l |
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Reference Links
Frequently Asked Questions
What is CVE-2020-3497?
CVE-2020-3497 is a vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers.
What is the severity of CVE-2020-3497?
The severity of CVE-2020-3497 is high, with a CVSS score of 7.4.
How does CVE-2020-3497 affect Cisco IOS XE Software?
CVE-2020-3497 affects Cisco IOS XE Software version 16.12.1.
How can an attacker exploit CVE-2020-3497?
An unauthenticated, adjacent attacker can exploit CVE-2020-3497 to cause a denial of service (DoS) condition on an affected device.
How can I fix CVE-2020-3497?
To fix CVE-2020-3497, update Cisco IOS XE Software to a version that is not vulnerable.
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- vendor/cisco
- canonical/cisco ios xe
- version/cisco ios xe/16.12.1
- canonical/cisco 9800-40
- canonical/cisco 9800-80
- canonical/cisco 9800-cl
- canonical/cisco 9800-l