CVE-2022-34655 : What You Need to Know

A detailed overview of CVE-2022-34655 affecting BIG-IP devices by F5.

Understanding CVE-2022-34655

This CVE highlights a vulnerability in BIG-IP devices that can lead to the termination of Traffic Management Microkernel (TMM) under certain conditions.

What is CVE-2022-34655?

The vulnerability exists in BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.6.1, and 14.1.x before 14.1.5 due to mishandling of HTTP traffic in virtual servers utilizing specific iRules.

The Impact of CVE-2022-34655

The vulnerability poses a high risk with a CVSS base score of 7.5, affecting the availability of TMM when triggered by malicious or unexpected traffic.

Technical Details of CVE-2022-34655

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

Vulnerability Description

When a virtual server configured with an iRule containing the HTTP::payload command receives certain traffic, TMM may crash, impacting network availability.

Affected Systems and Versions

BIG-IP versions 16.0.x, 15.1.x, and 14.1.x are susceptible to this vulnerability, while older and newer versions remain unaffected.

Exploitation Mechanism

By sending crafted or unexpected traffic to a virtual server with a specific iRule configuration, attackers can trigger the TMM crash.

Mitigation and Prevention

Discover immediate steps and long-term security practices to safeguard against CVE-2022-34655.

Immediate Steps to Take

Consider updating to a non-affected version or applying patches provided by F5 to mitigate the vulnerability's exploitability.

Long-Term Security Practices

Regularly monitor for security advisories from F5 and implement best practices for iRule configurations to minimize exposure to similar vulnerabilities.

Patching and Updates

Stay informed about the release of patches for BIG-IP devices and apply them promptly to ensure the security and stability of the system.