Description
In CVE-2023-25194, we announced the RCE/Denial of service attack via SASL JAAS JndiLoginModule configuration in Kafka Connect API. But not only Kafka Connect API is vulnerable to this attack, the Apache Kafka brokers also have this vulnerability. To exploit this vulnerability, the attacker needs to be able to connect to the Kafka cluster and have the AlterConfigs permission on the cluster resource.
Since Apache Kafka 3.4.0, we have added a system property ("-Dorg.apache.kafka.disallowed.login.modules") to disable the problematic login modules usage in SASL JAAS configuration. Also by default "com.sun.security.auth.module.JndiLoginModule" is disabled in Apache Kafka 3.4.0, and "com.sun.security.auth.module.JndiLoginModule,com.sun.security.auth.module.LdapLoginModule" is disabled by default in in Apache Kafka 3.9.1/4.0.0
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Kafka | 2.0.0 – ≤ 3.3.2 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.kafka:kafka_2.10 | all versions | — | GHSA-mcwh-c9pg-xw43 |
| Maven | org.apache.kafka:kafka_2.11 | all versions | — | GHSA-mcwh-c9pg-xw43 |
| Maven | org.apache.kafka:kafka_2.12 | < 3.4.0 | 3.4.0 | GHSA-mcwh-c9pg-xw43 |
| Maven | org.apache.kafka:kafka_2.13 | < 3.4.0 | 3.4.0 | GHSA-mcwh-c9pg-xw43 |
| Maven | org.apache.kafka:kafka_2.8.0 | all versions | — | GHSA-mcwh-c9pg-xw43 |
| Maven | org.apache.kafka:kafka_2.8.2 | all versions | — | GHSA-mcwh-c9pg-xw43 |
| Maven | org.apache.kafka:kafka_2.9.1 | all versions | — | GHSA-mcwh-c9pg-xw43 |
| Maven | org.apache.kafka:kafka_2.9.2 | all versions | — | GHSA-mcwh-c9pg-xw43 |
Advisories 1
- WID-SEC-2025-1269 Apache Kafka: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 6, 2026
References
- https://kafka.apache.org/cve-list vendor-advisory