What is the severity of CVE-2024-20303?

CVE-2024-20303 is considered a high severity vulnerability due to its potential to cause denial of service conditions.

What type of attack does CVE-2024-20303 enable?

CVE-2024-20303 allows an unauthenticated, adjacent attacker to exploit the multicast DNS feature to trigger a denial of service.

How do I fix CVE-2024-20303?

To mitigate CVE-2024-20303, you should update your Cisco IOS XE Software to the latest recommended version provided by Cisco.

Which devices are affected by CVE-2024-20303?

CVE-2024-20303 affects Wireless LAN Controllers (WLCs) running vulnerable versions of Cisco IOS XE Software.

Can CVE-2024-20303 be exploited remotely?

No, CVE-2024-20303 requires an adjacent attacker to exploit the vulnerability, limiting the attack vector to local networks.

Vulnerability/
CVE-2024-20303

high

7.4

CWE

459

27/3/2024

1/8/2024

CVE-2024-20303

First published: Wed Mar 27 2024(Updated: )

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. An attacker could exploit this vulnerability by connecting to the wireless network and sending a continuous stream of specific mDNS packets. A successful exploit could allow the attacker to cause the wireless controller to have high CPU utilization, which could lead to access points (APs) losing their connection to the controller and result in a DoS condition.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS and IOS XE Software

Never miss a vulnerability like this again

Reference Links

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

Frequently Asked Questions

What is the severity of CVE-2024-20303?
CVE-2024-20303 is considered a high severity vulnerability due to its potential to cause denial of service conditions.
What type of attack does CVE-2024-20303 enable?
CVE-2024-20303 allows an unauthenticated, adjacent attacker to exploit the multicast DNS feature to trigger a denial of service.
How do I fix CVE-2024-20303?
To mitigate CVE-2024-20303, you should update your Cisco IOS XE Software to the latest recommended version provided by Cisco.
Which devices are affected by CVE-2024-20303?
CVE-2024-20303 affects Wireless LAN Controllers (WLCs) running vulnerable versions of Cisco IOS XE Software.
Can CVE-2024-20303 be exploited remotely?
No, CVE-2024-20303 requires an adjacent attacker to exploit the vulnerability, limiting the attack vector to local networks.

agent/weakness
agent/references
agent/description
agent/type
agent/first-publish-date
collector/nvd-api
source/NVD
agent/severity
agent/author
agent/event
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/source
agent/tags
agent/softwarecombine
agent/guess-ai
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/cisco
canonical/cisco ios and ios xe software

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.