What is CVE-2021-22138?

CVE-2021-22138 is a low-severity vulnerability in Elastic Elasticsearch, classified under Improper Certificate Validation. CVSS score: 3.7/10. Published 2021-05-13.

How severe is CVE-2021-22138?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Elastic Elasticsearch

CVE-2021-22138

In Logstash versions after 6.4.0 and before 6.8.15 and 7.12.0 a TLS certificate validation flaw was found in the monitoring feature. When specifying a trusted server CA certificate Logstash would not properly verify the certificate returne…

Vulnerability class: Improper Certificate Validation

EPSS: 0.005 (37.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Elastic Elasticsearch — versions after 6.4.0 and before 6.8.15 and 7.12.0
Elastic Logstash

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

security@elastic.co (x_refsource_MISC, Vendor Advisory)
security@elastic.co (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-22138?: CVE-2021-22138 is a low-severity vulnerability in Elastic Elasticsearch, classified under Improper Certificate Validation. CVSS score: 3.7/10. Published 2021-05-13.
How severe is CVE-2021-22138?: Low severity. CVSS v3 base score is 3.7 out of 10.