Input validation error in Cisco Systems, Inc products - CVE-2023-20202

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Main Vulnerability Database Vulnerabilities #VU81291

Input validation error in Cisco Systems, Inc products - CVE-2023-20202

Published: September 29, 2023


Vulnerability identifier: #VU81291
CSH Severity: Low
CVSS v4: 6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-20202
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the Wireless Network Control daemon (wncd). A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.


Affected software

Catalyst 9800 Embedded Wireless Controller
Catalyst 9800 Series Wireless Controllers
Catalyst 9800-CL Wireless Controllers for Cloud
Embedded Wireless Controllers on Catalyst Access Points
Cisco IOS XE

How to mitigate CVE-2023-20202

Install updates from vendor's website.

Cisco IOS XE - addressed in versions 17.9.1y1, 17.9.3, 17.9.3a, 17.9.4, 17.11.1, 17.11.1a, 17.12.1, 17.12.1a

External References

Related Security Bulletins