CVE-2024-31141 Information

Description

Files or Directories Accessible to External Parties Improper Privilege Management vulnerability in Apache Kafka Clients.

Apache Kafka Clients accept configuration data for customizing behavior and includes ConfigProvider plugins in order to manipulate these configurations. Apache Kafka also provides FileConfigProvider DirectoryConfigProvider and EnvVarConfigProvider implementations which include the ability to read from disk or environment variables. In applications where Apache Kafka Clients configurations can be specified by an untrusted party attackers may use these ConfigProviders to read arbitrary contents of the disk and environment variables.

In particular this flaw may be used in Apache Kafka Connect to escalate from REST API access to filesystem/environment access which may be undesirable in certain environments including SaaS products. This issue affects Apache Kafka Clients: from 2.3.0 through 3.5.2 3.6.2 3.7.0.

Users with affected applications are recommended to upgrade kafka-clients to version >=3.8.0 and set the JVM system property \org.apache.kafka.automatic.config.providers=none. Users of Kafka Connect with one of the listed ConfigProvider implementations specified in their worker config are also recommended to add appropriate llowlist.pattern\ and llowed.paths\ to restrict their operation to appropriate bounds.

For users of Kafka Clients or Kafka Connect in environments that trust users with disk and environment variable access it is not recommended to set the system property. For users of the Kafka Broker Kafka MirrorMaker 2.0 Kafka Streams and Kafka command-line tools it is not recommended to set the system property.

Reference

https://lists.apache.org/thread/9whdzfr0zwdhr364604w5ssnzmg4v2lv