Is CVE-2022-0897 in the CISA KEV catalog?

No. CVE-2022-0897 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-0897?

CVE-2022-0897 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2022-0897?

CVE-2022-0897 has an EPSS score of 1.02% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-0897?

Upgrade libvirt on debian 11 to 7.0.0-3+deb11u3 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2022-0897

MEDIUM

4.3

CVSS v3

NVD

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).

CWE-667

How to fix

Remediation Available

libvirtDebian

Fixed in:7.0.0-3+deb11u3CVE-2022-0897

Fixed in:8.2.0-1CVE-2022-0897

libvirtUbuntu

Fixed in:4.0.0-1ubuntu8.21USN-5399-1

Fixed in:6.0.0-0ubuntu8.16USN-5399-1

Fixed in:8.0.0-1ubuntu7.5USN-6126-1

Fixed in:8.6.0-0ubuntu3.2USN-6126-1

Fixed in:9.0.0-2ubuntu1.1USN-6126-1

libvirt-daemonUbuntu

Fixed in:4.0.0-1ubuntu8.21USN-5399-1

Fixed in:6.0.0-0ubuntu8.16USN-5399-1

Fixed in:8.0.0-1ubuntu7.5USN-6126-1

Fixed in:8.6.0-0ubuntu3.2USN-6126-1

Fixed in:9.0.0-2ubuntu1.1USN-6126-1

libvirt-daemon-systemUbuntu

Fixed in:4.0.0-1ubuntu8.21USN-5399-1

Fixed in:6.0.0-0ubuntu8.16USN-5399-1

Fixed in:8.0.0-1ubuntu7.5USN-6126-1

Fixed in:8.6.0-0ubuntu3.2USN-6126-1

Fixed in:9.0.0-2ubuntu1.1USN-6126-1

libvirt0Ubuntu

Fixed in:4.0.0-1ubuntu8.21USN-5399-1

Fixed in:6.0.0-0ubuntu8.16USN-5399-1

Fixed in:8.0.0-1ubuntu7.5USN-6126-1

Fixed in:8.6.0-0ubuntu3.2USN-6126-1

Fixed in:9.0.0-2ubuntu1.1USN-6126-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

1.02%probability of exploitation in 30 days

59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Third-Party Advisory1

security.gentoo.org

Issue Tracking1

bugzilla.redhat.com

Other references1

lists.debian.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.