QID 317375

Date Published: 2023-10-17

QID 317375: Cisco Internetwork Operating System (IOS) XE Denial of Service (DoS) Vulnerability (cisco-sa-wlc-wncd-HFGMsfSD)

A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition.

Affected Products:

Catalyst 9800 Series Wireless Controllers
Catalyst 9800-CL Wireless Controllers for Cloud
Embedded Wireless Controllers on Catalyst Access Points

QID Detection Logic (Authenticated):
The check matches Cisco IOS XE version retrieved via Unix Auth using "show version" command.
QID Detection Logic (Unauthenticated):
The check matches Cisco IOS XE version retrieved via SNMP or TCP/IP Fingerprint or NTP or Telnet.

A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to reload, resulting in a DoS condition.

  • CVSS V3 rated as High - 6.5 severity.
  • CVSS V2 rated as Medium - 4.6 severity.
    • Solution

    Customers are advised to refer to cisco-sa-wlc-wncd-HFGMsfSD for more information.

    Vendor References

    CVEs related to QID 317375

    CVE-2023-20202 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-wlc-wncd-HFGMsfSD URL Logo sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-wncd-HFGMsfSD
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