CVE-2022-23030 : What You Need to Know

This article provides an overview of CVE-2022-23030, a vulnerability affecting BIG-IP versions 13.1.x, 14.1.x, 15.1.x, and 16.1.x. The vulnerability can lead to increased CPU resource utilization when using specific network adapters and configurations.

Understanding CVE-2022-23030

CVE-2022-23030 is a vulnerability identified in BIG-IP versions 13.1.x, 14.1.x, 15.1.x, and 16.1.x, impacting systems utilizing the ixlv driver in SR-IOV mode with certain network adapters, potentially causing higher CPU resource consumption.

What is CVE-2022-23030?

CVE-2022-23030 occurs in BIG-IP VE instances when the ixlv driver is employed alongside specified Intel network adapters and enabled TCP Segmentation Offload feature, leading to uncontrolled resource consumption and increased CPU load.

The Impact of CVE-2022-23030

The vulnerability could allow malicious actors to craft requests that trigger a significant rise in CPU resource usage, potentially impacting system performance and availability. It is crucial to address this issue promptly to mitigate the risk of exploitation.

Technical Details of CVE-2022-23030

Here are the technical specifics related to CVE-2022-23030:

Vulnerability Description

When the affected BIG-IP versions employ the ixlv driver with designated Intel network adapters and TCP Segmentation Offload enabled, undisclosed requests can lead to a surge in CPU resource consumption.

Affected Systems and Versions

BIG-IP versions 13.1.x, 14.1.x, 15.1.x, and 16.1.x are susceptible to CVE-2022-23030 when operating in conjunction with the ixlv driver and specific Intel network adapters.

Exploitation Mechanism

Malicious actors could exploit this vulnerability by sending crafted requests to systems utilizing the vulnerable configurations, causing a noticeable increase in CPU resource utilization.

Mitigation and Prevention

To address CVE-2022-23030, consider the following mitigation strategies:

Immediate Steps to Take

Disable TCP Segmentation Offload or switch to a compatible network configuration to reduce the likelihood of resource consumption escalation.
Monitor CPU utilization closely for any unusual spikes that may indicate exploitation attempts.

Long-Term Security Practices

Stay informed about security updates and advisories from F5 Networks to promptly apply patches addressing CVE-2022-23030 and other vulnerabilities.
Implement network segmentation and access controls to limit exposure to potentially malicious traffic.

Patching and Updates

Apply the necessary software patches provided by F5 Networks for the impacted BIG-IP versions to remediate CVE-2022-23030 and enhance system security.