Vulnerability in Elastic Elasticsearch
CVE-2021-22144
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.
EPSS: 0.022 (80.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Elastic Elasticsearch
- Oracle Communications_cloud_native_core_automated_test_suite — versions 1.8.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@elastic.co (Patch, Third Party Advisory, x_refsource_MISC)
- security@elastic.co (x_refsource_MISC, Release Notes, Vendor Advisory)
- security@elastic.co (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22144?
- CVE-2021-22144 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2021-07-26.
- How severe is CVE-2021-22144?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-22144 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.