CVE-2021-22973 : Security Advisory and Response

This CVE-2021-22973 article provides an overview of the vulnerability found in BIG-IP software versions 12.1.x to 16.0.x that affects the JSON parser function.

Understanding CVE-2021-22973

This section delves into the details and impact of the CVE.

What is CVE-2021-22973?

The vulnerability exists in BIG-IP versions that do not protect against out-of-bounds memory accesses or writes within the JSON parser function.

The Impact of CVE-2021-22973

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

Technical Details of CVE-2021-22973

This section provides technical insights into the vulnerability.

Vulnerability Description

On BIG-IP versions 12.1.x to 16.0.x, the JSON parser function lacks protection against out-of-bounds memory accesses or writes.

Affected Systems and Versions

The vulnerability affects BIG-IP versions: 16.0.x before 16.0.1.1, 15.1.x before 15.1.2, 14.1.x before 14.1.3.1, 13.1.x before 13.1.3.5, and all 12.1.x versions.

Exploitation Mechanism

Malicious actors can exploit this vulnerability to trigger DoS attacks on the impacted BIG-IP systems.

Mitigation and Prevention

This section outlines necessary steps to mitigate the risks associated with CVE-2021-22973.

Immediate Steps to Take

Users are advised to apply security patches provided by the vendor to address the vulnerability.

Long-Term Security Practices

Regularly update and monitor BIG-IP software to prevent security breaches and ensure system integrity.

Patching and Updates

Keep software up to date with the latest patches and security updates from the vendor.