# MA-1096.072024: MyCERT Advisory - Cisco High Severity Security Advisory: RADIUS Protocol Spoofing

**Date:** 12 Jul 2024  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-1096.072024  
**Advisory ID:** MA-1096.072024

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**1.0 Introduction**
Recently, Cisco released security advisories for vulnerabilities affecting multiple Cisco products.
**2.0 Impact**
The vulnerability in the RADIUS protocol allows an attacker to forge an authentication response in cases where a Message-Authenticator attribute is not required or enforced.
**3.0 Affected Products**
Multiple Cisco products.
**4.0 Recommendations**
CyberSecurity Malaysia encourages users and administrators to review the following[Cisco Security Updates](https://sec.cloudapps.cisco.com/security/center/publicationListing.x) and apply the necessary updates:
RADIUS Protocol Spoofing Vulnerability (Blast-RADIUS): <https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-radius-spoofing-july-2024-87cCDwZ3>
Generally, we advise users to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact the Cyber999 Incident Response Centre through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 08:30 -17:30 MYT 
Web:[https://www.mycert.org.my](https://www.mycert.org.my/)
**5.0    References**
- <https://www.kb.cert.org/vuls/id/456537>
- <https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-radius-spoofing-july-2024-87cCDwZ3>
- <https://www.sdxcentral.com/alerts/vu456537-radius-protocol-susceptible-to-forgery-attacks/2024/07/>
- <https://sec.cloudapps.cisco.com/security/center/publicationListing.x>