Information disclosure in Elastic Elasticsearch
CVE-2021-22137
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.
Vulnerability class: Information Disclosure
EPSS: 0.011 (62.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Elastic Elasticsearch — versions before 7.11.2 and 6.8.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@elastic.co (x_refsource_MISC, Vendor Advisory)
- security@elastic.co (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22137?
- CVE-2021-22137 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Information Disclosure. CVSS score: 5.3/10. Published 2021-05-13.
- How severe is CVE-2021-22137?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-22137 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.