#VU54639 Resource exhaustion in Elasticsearch - CVE-2021-22144
Published: July 9, 2021
Vulnerability identifier: #VU54639
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Green
CVE-ID: CVE-2021-22144
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Elasticsearch
Elasticsearch
Software vendor:
Elastic Stack
Elastic Stack
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an uncontrolled recursion issue in the Elasticsearch Grok parser. A remote authenticated attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.