{"id":"UBUNTU-CVE-2021-22144","details":"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.","modified":"2025-10-24T04:50:07Z","published":"2021-07-26T12:15:00Z","upstream":["CVE-2021-22144"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-22144"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-22144"}],"affected":[{"package":{"name":"elasticsearch","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/elasticsearch@1.7.3+dfsg-3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.2+dfsg-1","1.7.3+dfsg-1","1.7.3+dfsg-2","1.7.3+dfsg-3"],"ecosystem_specific":{"binaries":[{"binary_name":"elasticsearch","binary_version":"1.7.3+dfsg-3"},{"binary_name":"libelasticsearch1.7-java","binary_version":"1.7.3+dfsg-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-22144.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}