Vulnerability Description
A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) Mobility messages in Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a logic error and improper management of resources related to the handling of CAPWAP Mobility messages. An attacker could exploit this vulnerability by sending crafted CAPWAP Mobility packets to an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device. This would cause the device to reload, resulting in a DoS condition.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | 17.3.4c |
| Cisco | Catalyst 9800 | - |
| 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 | - |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cVendor Advisory
FAQ
What is CVE-2022-20856?
CVE-2022-20856 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) Mobility messages in Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow...
How severe is CVE-2022-20856?
CVE-2022-20856 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-20856?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Catalyst 9800, Cisco Catalyst 9800-40, Cisco Catalyst 9800-80, Cisco Catalyst 9800-Cl.