SB2022092916 - Denial of service in Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family

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Main Vulnerability Database SB2022092916

SB2022092916 - Denial of service in Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family

Published: September 29, 2022

Security Bulletin ID SB2022092916
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper control of a resource through its lifetime (CVE-ID: CVE-2022-20856)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: 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


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 update from vendor's website.

References