CVE-2024-20303 | Cisco IOS XE - Wireless LAN Controllers Operational Intel

Executive Risk Summary

"A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper management of mDNS client entries and can be exploited by sending a continuous stream of specific mDNS packets, leading to high CPU utilization and potential loss of connection to the controller."

Operational Audit Arsenal

Target Type Firmware Image

Target Asset Cisco IOS XE

Standard Path Global Firmware

Manual Verification Required

This is a non-Windows asset (Cisco). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

Network disruption possible due to controller reboot

Internal Work Notes

CVE-2024-20303: Cisco IOS XE WLC mDNS DoS vulnerability - verify version and apply patch to prevent denial of service condition

Technical Intelligence & Operational Utilities • Delivered Weekly

Intelligence Sources

Official Advisoryhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-mdns-dos-4hv6pBGf

Related Cisco Threats

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Secure Firewall Management Center (FMC) Software

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Cisco IOS XE - Wireless LAN Controllers

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.