CVE-2021-38296 Information

Description

Apache Spark supports end-to-end encryption of RPC connections via \spark.authenticate\ and \spark.network.crypto.enabled. In versions 3.1.2 and earlier it uses a bespoke mutual authentication protocol that allows for full encryption key recovery. After an initial interactive attack this would allow someone to decrypt plaintext traffic offline. Note that this does not affect security mechanisms controlled by \spark.authenticate.enableSaslEncryption\ \spark.io.encryption.enabled\ \spark.ssl\ \spark.ui.strictTransportSecurity. Update to Apache Spark 3.1.3 or later

CVSS Vector

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

Reference

https://lists.apache.org/thread/70x8fw2gx3g9ty7yk0f2f1dlpqml2smd

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5