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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.022 (81.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.oracle.com/security-alerts/cpuapr2022.html (Patch, Third Party Advisory)
- discuss.elastic.co/t/elasticsearch-7-13-3-and-6-8-17-security-update/278100 (Release Notes, Vendor Advisory)
- security.netapp.com/advisory/ntap-20210827-0006/ (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.