CVE-2022-28708 : Security Advisory and Response
Discover the impact of CVE-2022-28708 affecting F5 BIG-IP software versions 16.1.x and 15.1.x. Learn about the vulnerability, its technical details, and mitigation strategies.
A vulnerability, identified as CVE-2022-28708, has been discovered in certain versions of F5 BIG-IP software. This vulnerability could potentially lead to the termination of the Traffic Management Microkernel (TMM) process under specific configurations.
Understanding CVE-2022-28708
This section will delve into the details of the CVE-2022-28708 vulnerability in F5 BIG-IP software.
What is CVE-2022-28708?
CVE-2022-28708 affects F5 BIG-IP versions 16.1.x and 15.1.x, where certain configurations with DNS resolver-enabled profiles may trigger the termination of the TMM process.
The Impact of CVE-2022-28708
With a CVSS base score of 5.9, this vulnerability carries a medium severity rating, highlighting the potential high availability impact on affected systems.
Technical Details of CVE-2022-28708
This section will provide a deeper technical insight into the CVE-2022-28708 vulnerability.
Vulnerability Description
The vulnerability arises in F5 BIG-IP versions 16.1.x and 15.1.x due to undisclosed DNS responses triggering the termination of the TMM process.
Affected Systems and Versions
Versions prior to 16.1.2.2 (16.1.x) and 15.1.5.1 (15.1.x) are affected, while versions 14.1.x, 13.1.x, 12.1.x, and 11.6.x remain unaffected.
Exploitation Mechanism
A misconfigured DNS resolver-enabled profile on a virtual server can induce the TMM process termination, causing disruptions.
Mitigation and Prevention
Understanding how to mitigate and prevent the CVE-2022-28708 vulnerability is crucial for maintaining system security.
Immediate Steps to Take
Users are advised to update their F5 BIG-IP software to versions 16.1.2.2 or higher, and 15.1.5.1 or higher, to mitigate the risk of exploitation.
Long-Term Security Practices
Regularly update and maintain software versions, ensure proper configuration of profiles, and monitor for any unusual DNS responses to enhance overall system security.
Patching and Updates
Stay informed about security patches and updates provided by F5 to address vulnerabilities and improve system resilience.