#VU67734 Improper control of a resource through its lifetime in Cisco Systems, Inc products - CVE-2022-20856
Published: September 29, 2022
Vulnerability identifier: #VU67734
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2022-20856
CWE-ID: CWE-664
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco IOS XE
Catalyst 9800-CL Wireless Controllers for Cloud
Catalyst 9800 Embedded Wireless Controller
Catalyst 9800 Series Wireless Controllers
Cisco IOS XE
Catalyst 9800-CL Wireless Controllers for Cloud
Catalyst 9800 Embedded Wireless Controller
Catalyst 9800 Series Wireless Controllers
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a logic error and improper management of resources in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) Mobility messages. A remote attacker can send specially crafted CAPWAP Mobility packets and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.