CVE-2021-22138

Name of the Vulnerable Software and Affected Versions Logstash versions after 6.4.0 and before 6.8.15 Logstash versions prior to 7.12.0

Description A TLS certificate validation flaw was found in the monitoring feature. When specifying a trusted server CA certificate, Logstash would not properly verify the certificate returned by the monitoring server. This could result in a man-in-the-middle style attack against the Logstash monitoring data.

Recommendations For Logstash versions after 6.4.0 and before 6.8.15, update to version 6.8.15 or later. For Logstash versions prior to 7.12.0, update to version 7.12.0 or later.