CVE-2022-34651 Explained : Impact and Mitigation
Get insights into CVE-2022-34651 affecting BIG-IP versions 16.1.x and 15.1.x. Learn about the impact, technical details, affected systems, exploitation mechanism, and mitigation steps.
This article provides detailed information about CVE-2022-34651, a vulnerability found in BIG-IP versions 16.1.x and 15.1.x related to TLS 1.3 and iRule, impacting the Traffic Management Microkernel (TMM).
Understanding CVE-2022-34651
CVE-2022-34651 is a vulnerability in F5's BIG-IP versions 16.1.x and 15.1.x, where certain configurations can lead to the termination of TMM due to undisclosed requests.
What is CVE-2022-34651?
In BIG-IP Versions 16.1.x before 16.1.3.1 and 15.1.x before 15.1.6.1, the presence of an LTM Client or Server SSL profile with TLS 1.3 enabled, along with an iRule calling HTTP::respond, can trigger TMM termination.
The Impact of CVE-2022-34651
The vulnerability poses a high availability impact on affected systems, with a CVSS base score of 7.5, indicating a high severity level.
Technical Details of CVE-2022-34651
This section covers specific technical aspects of the CVE, including the vulnerability description, affected systems, and the exploitation mechanism.
Vulnerability Description
CVE-2022-34651 involves undisclosed requests in the presence of specific configurations that can cause TMM termination in BIG-IP versions 16.1.x and 15.1.x.
Affected Systems and Versions
The vulnerability affects BIG-IP versions 16.1.x before 16.1.3.1 and 15.1.x before 15.1.6.1, while versions 13.1.x, 14.1.x, and 17.0.x remain unaffected.
Exploitation Mechanism
By leveraging an LTM Client or Server SSL profile with TLS 1.3 enabled in combination with an iRule that invokes HTTP::respond, attackers can trigger the vulnerability leading to TMM termination.
Mitigation and Prevention
In response to CVE-2022-34651, certain immediate steps need to be taken to secure the affected systems and ensure long-term security.
Immediate Steps to Take
Organizations should disable affected configurations and monitor for any unusual activity or TMM terminations.
Long-Term Security Practices
Implement routine security assessments, keep software up to date, and follow best practices to prevent similar vulnerabilities in the future.
Patching and Updates
Ensure timely installation of patches provided by F5 to address the CVE-2022-34651 vulnerability and enhance system security.