CVE-2022-35240 : What You Need to Know

This article provides detailed information about CVE-2022-35240, a vulnerability found in BIG-IP versions 16.1.x, 15.1.x, and 14.1.x related to Message Routing MQTT profile configuration.

Understanding CVE-2022-35240

CVE-2022-35240 is a vulnerability impacting BIG-IP software versions before specified updates, potentially leading to increased memory resource utilization due to undisclosed requests when using the Message Routing (MR) MQTT profile.

What is CVE-2022-35240?

The CVE-2022-35240 vulnerability affects BIG-IP versions 16.1.x, 15.1.x, and 14.1.x, where configuring the MR MQTT profile on a virtual server can result in heightened memory resource usage due to undisclosed requests.

The Impact of CVE-2022-35240

This vulnerability poses a HIGH availability impact with a CVSS base score of 7.5, indicating a severe threat to systems that could experience an increase in memory consumption without appropriate mitigation.

Technical Details of CVE-2022-35240

CVE-2022-35240 is assigned a CVSS 3.1 base score of 7.5, signifying a HIGH severity level. The attack complexity is LOW, with an attack vector through the NETWORK.

Vulnerability Description

In versions 16.1.x, 15.1.x, and 14.1.x of BIG-IP, improper handling of requests within the MR MQTT profile can lead to a rise in memory resource usage, potentially impacting system performance.

Affected Systems and Versions

BIG-IP versions 16.1.x, 15.1.x, and 14.1.x are susceptible to this vulnerability when the MR MQTT profile is active on virtual servers, highlighting the importance of timely updates for enhanced security.

Exploitation Mechanism

By sending undisclosed requests to a virtual server with the MR MQTT profile configured, threat actors can exploit this vulnerability to escalate memory resource utilization, impacting system availability.

Mitigation and Prevention

To address CVE-2022-35240, immediate action and long-term security practices are recommended to safeguard systems against potential memory resource abuse.

Immediate Steps to Take

Implement security patches and updates provided by F5 for affected BIG-IP versions, especially versions 16.1.x, 15.1.x, and 14.1.x, to mitigate the risks associated with increased memory resource utilization.

Long-Term Security Practices

Regularly monitor and update BIG-IP software to prevent vulnerabilities, adhere to security best practices, and conduct security audits to identify and resolve potential risks efficiently.

Patching and Updates

Stay informed about security advisories from F5 and promptly apply patches and updates to mitigate security vulnerabilities, ensuring the protection of systems and data.