GHSA-6MQQ-8R44-VMJC Exposure of Sensitive Information to an Unauthorized Actor in Apache Spark

In Apache Spark 1.0.0 to 2.1.2, 2.2.0 to 2.2.1, and 2.3.0, when using PySpark or SparkR, it's possible for a different local user to connect to the Spark application and impersonate the user running the Spark application...