Elasticsearch Denial of Service issue (ESA-2021-15)
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.
Elasticsearch versions prior to 7.13.3 and 6.8.17
Solutions and Mitigations:
Users should update their version of Elasticsearch to 7.13.3 or 6.8.17.
CVSSv3: 5.7 - AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE ID: CVE-2021-22144
CWE: CWE-674: Uncontrolled Recursion