Unchecked Return Value in Cisco Systems, Inc products - CVE-2022-20682
Published: April 14, 2022
Vulnerability identifier: #VU62321
CSH Severity: High
CVSS v4.0: 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-2022-20682
CWE-ID: CWE-252
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XE
Catalyst 9300 Series Switches
Catalyst 9400 Series Switches
Catalyst 9500 Series Switches
Catalyst 9800 Embedded Wireless Controller
Catalyst 9800 Series Wireless Controllers
Catalyst 9800-CL Wireless Controllers for Cloud
Embedded Wireless Controller on Catalyst Access Points
Cisco IOS XE
Catalyst 9300 Series Switches
Catalyst 9400 Series Switches
Catalyst 9500 Series Switches
Catalyst 9800 Embedded Wireless Controller
Catalyst 9800 Series Wireless Controllers
Catalyst 9800-CL Wireless Controllers for Cloud
Embedded Wireless Controller on Catalyst Access Points
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to inadequate input validation in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol. A remote attacker can send a specially crafted mDNS query and perform a denial of service (DoS) attack.
How to mitigate CVE-2022-20682
Install updates from vendor's website.