HIGH 7.5 Maven

Sensitive data written to disk unencrypted in Spark

GHSA-fp5j-3fpf-mhj5 · CVE-2019-10099 · PYSEC-2019-114

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Description

Prior to Spark 2.3.3, in certain situations Spark would write user data to local disk unencrypted, even if spark.io.encryption.enabled=true. This includes cached blocks that are fetched to disk (controlled by spark.maxRemoteBlockSizeFetchToMem); in SparkR, using parallelize; in Pyspark, using broadcast and parallelize; and use of python udfs.

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