Is CVE-2021-22144 in the CISA KEV catalog?

No. CVE-2021-22144 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-22144?

CVE-2021-22144 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-22144?

CVE-2021-22144 has an EPSS score of 1.66% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-22144?

Upgrade Elasticsearch to 7.13.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-22144

MEDIUMEPSS 74th pctl

6.5

CVSS v3

NVD

Description

In Elasticsearch versions before 7.13.3 and 6.8.17 an uncontrolled recursion vulnerability that could lead to a denial of service attack was identified in the Elasticsearch Grok parser. A user with the ability to submit arbitrary queries to Elasticsearch could create a malicious Grok query that will crash the Elasticsearch node.

CWE-674

How to fix

Remediation Available

ElasticsearchWindows application

Affected:7.0.0 7.13.3Fixed in:7.13.3Elastic

Affected:6.8.17Fixed in:6.8.17Elastic

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

AvailabilityHigh

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

Exploit Intelligence

1.66%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Patch1

oracle.com

Vendor Advisory1

discuss.elastic.co

Third-Party Advisory1

security.netapp.com

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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.