Auth bypass in Elastic Elasticsearch
CVE-2021-22134
A document disclosure flaw was found in Elasticsearch versions after 7.6.0 and before 7.11.0 when Document or Field Level Security is used. Get requests do not properly apply security permissions when executing a query against a recently updated document. This affects documents that have been updated and not yet refreshed in the index. This could result in the search disclosing the existence of documents and fields the attacker should not be able to view.
Vulnerability class: Information Disclosure
EPSS: 0.011 (62.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Elastic Elasticsearch — versions after 7.6.0 and before 7.11.0
- Oracle Communications_cloud_native_core_automated_test_suite — versions 1.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@elastic.co (x_refsource_MISC, Release Notes, Vendor Advisory)
- security@elastic.co (Patch, Third Party Advisory, x_refsource_MISC)
- security@elastic.co (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22134?
- CVE-2021-22134 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Information Disclosure. CVSS score: 4.3/10. Published 2021-03-08.
- How severe is CVE-2021-22134?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2021-22134 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.