CVE-2021-22144
Denial of Service in Elasticsearch
5.7
MEDIUM
CVSS 3.1
EPSS 0.21%
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.
How to fix CVE-2021-22144
To remediate CVE-2021-22144, upgrade the affected package to a fixed version below.
- —upgrade to 6.8.17 or later
- —upgrade to 6.8.17 or later
Is CVE-2021-22144 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 6.8.17, >= 7.0.0, < 7.13.3
- from 0, < 6.8.17
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.7 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |