CVE-2018-5515 : What You Need to Know

F5 BIG-IP versions 13.0.0-13.1.0.5 are susceptible to crashing TMM and causing failover events when utilizing RADIUS authentication responses from a RADIUS server with IPv6 addresses.

Understanding CVE-2018-5515

This CVE involves a vulnerability in F5 BIG-IP versions 13.0.0-13.1.0.5 that can lead to Denial of Service (DoS) incidents.

What is CVE-2018-5515?

CVE-2018-5515 is a vulnerability in F5 BIG-IP versions 13.0.0-13.1.0.5 that can result in TMM crashing and triggering failover events when using RADIUS authentication responses from a server with IPv6 addresses.

The Impact of CVE-2018-5515

The vulnerability can be exploited to disrupt services, potentially causing downtime and affecting network availability.

Technical Details of CVE-2018-5515

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The issue in F5 BIG-IP versions 13.0.0-13.1.0.5 allows attackers to crash TMM and induce failover events by leveraging RADIUS authentication responses from a server with IPv6 addresses.

Affected Systems and Versions

Product: BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)
Vendor: F5 Networks, Inc.
Versions: 13.0.0-13.1.0.5

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted RADIUS authentication responses from a server with IPv6 addresses, leading to TMM crashes and failover events.

Mitigation and Prevention

Protecting systems from CVE-2018-5515 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches or updates to mitigate the vulnerability.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity related to RADIUS authentication.

Long-Term Security Practices

Regularly update and patch systems to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.
Educate staff on cybersecurity best practices to enhance overall security posture.

Patching and Updates

Ensure that F5 BIG-IP versions 13.0.0-13.1.0.5 are updated with the latest patches provided by F5 Networks, Inc.