CVE-2018-5512 : Vulnerability Insights and Analysis

F5 Networks, Inc. BIG-IP 13.1.0-13.1.0.5 vulnerability leading to TMM restart due to specific traffic patterns.

Understanding CVE-2018-5512

This CVE involves a vulnerability in F5 BIG-IP 13.1.0-13.1.0.5 that can cause the Traffic Management Microkernel (TMM) to restart under certain conditions.

What is CVE-2018-5512?

When Large Receive Offload (LRO) and SYN cookies are enabled on F5 BIG-IP 13.1.0-13.1.0.5, undisclosed traffic patterns may lead to the restarting of TMM.

The Impact of CVE-2018-5512

The vulnerability can be exploited to cause a Denial of Service (DoS) condition on affected systems.

Technical Details of CVE-2018-5512

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

Vulnerability Description

The vulnerability occurs in F5 BIG-IP 13.1.0-13.1.0.5 when specific traffic patterns trigger the restarting of TMM due to enabled LRO and SYN cookies.

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: 13.1.0-13.1.0.5

Exploitation Mechanism

The vulnerability is exploited by sending undisclosed traffic patterns to the affected F5 BIG-IP systems, causing TMM to restart.

Mitigation and Prevention

Protecting systems from CVE-2018-5512 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable Large Receive Offload (LRO) and SYN cookies on affected F5 BIG-IP systems.
Monitor network traffic for any unusual patterns that could trigger the vulnerability.

Long-Term Security Practices

Regularly update and patch F5 BIG-IP systems to mitigate known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Apply patches provided by F5 Networks, Inc. to address the CVE-2018-5512 vulnerability.