CVE-2019-10099

Sensitive data written to disk unencrypted in Spark

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.

Patch Available

Fix available through Seal Security.  
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Fix without upgrading

Score

7.5

Severity

High

Ecosystem

Java

Publish Date

August 7, 2019

Modified Date

June 10, 2026

Score Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Versions