Is CVE-2021-43979 in the CISA KEV catalog?

No. CVE-2021-43979 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43979?

CVE-2021-43979 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-43979?

CVE-2021-43979 has an EPSS score of 1.02% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-43979?

No published fix for CVE-2021-43979 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-43979

MEDIUM

5.3

CVSS v3

NVD

Description

Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control. The data replication mechanism allows policies to access the Kubernetes cluster state. During data replication, OPA/Gatekeeper does not wait for the replication to finish before processing a request, which might cause inconsistencies between the replicated resources in OPA/Gatekeeper and the resources actually present in the cluster. Inconsistency can later be reflected in a policy bypass. NOTE: the vendor disagrees that this is a vulnerability, because Kubernetes states are only eventually consistent

CWE-670

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

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

Patch1

github.com

Third-Party Advisory1

github.com

Embed a live status badge for CVE-2021-43979

Markdown

[![CVE-2021-43979](https://tridentstack.com/cve/badge/CVE-2021-43979.svg)](https://tridentstack.com/cve/CVE-2021-43979)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-43979"><img src="https://tridentstack.com/cve/badge/CVE-2021-43979.svg" alt="CVE-2021-43979"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.