SB2022041410 - Denial of service in Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family
Published: April 14, 2022
Security Bulletin ID
SB2022041410
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Unchecked Return Value (CVE-ID: CVE-2022-20682)
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.
Remediation
Install update from vendor's website.