Is CVE-2021-22137 in the CISA KEV catalog?

No. CVE-2021-22137 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-22137?

CVE-2021-22137 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-22137?

CVE-2021-22137 has an EPSS score of 1.10% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-22137?

Upgrade Elasticsearch to 7.11.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-22137

MEDIUM

5.3

CVSS v3

NVD

Description

In Elasticsearch versions before 7.11.2 and 6.8.15 a document disclosure flaw was found when Document or Field Level Security is used. Search queries do not properly preserve security permissions when executing certain cross-cluster search queries. This could result in the search disclosing the existence of documents the attacker should not be able to view. This could result in an attacker gaining additional insight into potentially sensitive indices.

CWE-200Information Exposure CWE-281

How to fix

Remediation Available

ElasticsearchWindows application

Affected:7.11.0 7.11.2Fixed in:7.11.2Elastic

Affected:6.8.15Fixed in:6.8.15Elastic

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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.10%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

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.