CVE-2025-27819

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

Reserved 2025-03-07 | Published 2025-06-10 | Updated 2025-06-10 | Assigner apache

Problem types

CWE-502 Deserialization of Untrusted Data

Product status

Default status
unaffected

2.0.0
affected

Credits

Ziyang Li finder

Ji'an Zhou finder

Ying Zhu finder

References

kafka.apache.org/cve-list vendor-advisory

cve.org (CVE-2025-27819)

nvd.nist.gov (CVE-2025-27819)

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