CVE-2021-23036 Explained : Impact and Mitigation

A detailed overview of CVE-2021-23036 affecting BIG-IP Advanced WAF and BIG-IP ASM versions before 16.0.1.2.

Understanding CVE-2021-23036

This section will cover the impact, technical details, and mitigation strategies for CVE-2021-23036.

What is CVE-2021-23036?

CVE-2021-23036 affects BIG-IP Advanced WAF and BIG-IP ASM versions prior to 16.0.1.2. When a BIG-IP ASM and DataSafe profile are configured on a virtual server, undisclosed requests can lead to the termination of the Traffic Management Microkernel (TMM).

The Impact of CVE-2021-23036

The vulnerability can be exploited to cause TMM termination, potentially disrupting network traffic and affecting system availability.

Technical Details of CVE-2021-23036

This section provides insight into the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises when an undisclosed request is sent to a virtual server with BIG-IP ASM and DataSafe profile, resulting in TMM termination.

Affected Systems and Versions

BIG-IP Advanced WAF and BIG-IP ASM versions before 16.0.1.2 are impacted by CVE-2021-23036.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specific requests to the affected virtual server, triggering TMM termination.

Mitigation and Prevention

Learn how to protect your systems from CVE-2021-23036 with immediate steps and long-term security practices.

Immediate Steps to Take

Immediate actions include monitoring network traffic, applying available patches, and restricting access to vulnerable servers.

Long-Term Security Practices

Implementing robust security measures, conducting regular vulnerability assessments, and staying informed about security updates are essential for long-term protection.

Patching and Updates

F5 provides patches and updates to address CVE-2021-23036. Ensure the timely application of patches and stay informed about security advisories.