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CVE-2022-0897

4.3 · MEDIUM

A flaw was found in the libvirt nwfilter driver.

Published Mar 25, 2022CWE-667EPSS 1.05%

Overview

CVE-2022-0897 is a medium-severity vulnerability. It was published on March 25, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.redhat.com/show_bug.cgi?id=2063883Reflists.debian.org/debian-lts-announce/2024/04/msg00000.htmlRefsecurity.gentoo.org/glsa/202210-06Refbugzilla.redhat.com/show_bug.cgi?id=2063883Reflists.debian.org/debian-lts-announce/2024/04/msg00000.htmlRefsecurity.gentoo.org/glsa/202210-06

How CyberStrike helps

Frequently asked questions

What is CVE-2022-0897?

CVE-2022-0897 is a medium-severity vulnerability. It was published on March 25, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2022-0897?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-0897?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-0897?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-0897 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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