QID 730139

Date Published: 2021-08-31

QID 730139: Elasticsearch Denial of Service Vulnerability (ESA-2021-15)

Elasticsearch is a search server based on Lucene that provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents.

Affected with following vulnerability:
CVE-2021-22144: An uncontrolled recursion vulnerability that could lead to a denial of service attack was identified in the Elasticsearch Grok parser.

Affected Versions:
Elasticsearch versions prior to 7.13.3 and 6.8.17

QID detection logic:
Checks the vulnerable versions of ElasticSearch.

Successful exploitation of this vulnerability may allow an attacker with the ability to submit arbitrary queries to Elasticsearch could create a malicious Grok query that will crash the Elasticsearch node.

  • CVSS V3 rated as High - 6.5 severity.
  • CVSS V2 rated as Medium - 4 severity.
    • Solution
    Customers are advised to upgrade to Elasticsearch version 7.13.3 or 6.8.17 to remediate this vulnerability.
    Vendor References

    CVEs related to QID 730139

    CVE-2021-22144 |
    Software Advisories
    Advisory ID Software Component Link
    ESA-2021-15 URL Logo www.elastic.co/community/security
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