CVE-2021-22144

MEDIUM

Elasticsearch < 6.8.17 - Denial of Service via Grok Parser Recursion

Title source: llm
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuapr2022.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210827-0006/

Scores

CVSS v3 6.5
EPSS 0.0166
EPSS Percentile 73.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-674
Status published
Products (3)
elastic/elasticsearch < 6.8.17
oracle/communications_cloud_native_core_automated_test_suite 1.8.0
org.elasticsearch/elasticsearch 0 - 6.8.17Maven
Published Jul 26, 2021
Tracked Since Feb 18, 2026