Unencrypted Data Leakage Vulnerability in Spark 2.3.3 and Earlier Versions

Unencrypted Data Leakage Vulnerability in Spark 2.3.3 and Earlier Versions

CVE-2019-10099 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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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