CVE-2022-34917

A flaw was found in Apache Kafka that allows malicious unauthenticated clients to allocate large amounts of memory on brokers, which could lead to an Out Of Memory Exception, causing a denial of service. Various authentication methods were affected in different degrees. In Kafka clusters without authentication, any client able to connect to a broker could trigger the issue. In Kafka clusters with SASL authentication, any client able to connect to a broker without the need for valid SASL credentials could trigger the issue. Lastly, in Kafka clusters with TLS authentication, only clients able to successfully authenticate via TLS could trigger the issue.