In Apache Spark versions prior to versions 3.4.0 and 3.3.3, applications using spark-submit can specify a proxy-user
to run as, limiting privileges. The application can execute code with the privileges of the submitting user, however, by providing malicious configuration-related classes on the classpath. This affects architectures relying on proxy-user, for example those using Apache Livy to manage submitted applications.
Update to Apache Spark 3.4.0, 3.3.3, or later, and ensure that spark.submit.proxyUser.allowCustomClasspathInClusterMode is set to its default of "false", and is not overridden by submitted applications.
{ "nvd_published_at": "2023-04-17T08:15:00Z", "cwe_ids": [ "CWE-269" ], "severity": "CRITICAL", "github_reviewed": true, "github_reviewed_at": "2023-04-21T20:37:59Z" }