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CVE-2025-55039

CVE-2025-55039 · Apache Spark, Apache Spark: RPC encryption defaults to unauthenticated AES-CTR mode, enabling man-in-the-middle ciphertext modification attacks

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This issue affects Apache Spark versions before 3.4.4, 3.5.2 and 4.0.0. Apache Spark versions before 4.0.0, 3.5.2 and 3.4.4 use an insecure default network encryption cipher for RPC communication between nodes. When spark.network.crypto.enabled is set to true (it is set to false by default), but spark.network.crypto.cipher is not explicitly configured, Spark defaults to AES in CTR mode (AES/CTR/NoPadding), which provides encryption without authentication. This vulnerability allows a man-in-the-middle attacker to modify encrypted RPC traffic undetected by flipping bits in ciphertext, potentially compromising heartbeat messages or application data and affecting the integrity of Spark workflows. To mitigate this issue, users should either configure spark.network.crypto.cipher to AES/GCM/NoPadding to enable authenticated encryption or enable SSL encryption by setting spark.ssl.enabled to true, which provides stronger transport security.

CVSS 6.5 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • apache spark

    Versions
    • ≥ 3.5.0, < 3.5.2: Affected (semver)
    • ≥ 0, < 3.4.4: Affected (semver)

    Update to 3.4.4; Update to 3.5.2

  • org.apache.spark:spark-network-common_2.13 Maven

    Versions
    • 3.5.0
    • 3.5.1
    Affected ranges
    • ECOSYSTEM: ≥ 3.5.0, < 3.5.2

    Update to 3.5.2

  • org.apache.spark:spark-network-common_2.13 Maven

    Versions
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    Affected ranges
    • ECOSYSTEM: < 3.4.4

    Update to 3.4.4

  • org.apache.spark:spark-network-common_2.12 Maven

    Versions
    • 2.4.0
    • 2.4.1
    • 2.4.2
    • 2.4.3
    • 2.4.4
    • 2.4.5
    • 2.4.6
    • 2.4.7
    • 2.4.8
    • 3.0.0
    • 3.0.0-preview
    • 3.0.0-preview2
    • 3.0.1
    • 3.0.2
    • 3.0.3
    • 3.1.0
    • 3.1.1
    • 3.1.2
    • 3.1.3
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    Affected ranges
    • ECOSYSTEM: < 3.4.4

    Update to 3.4.4

  • org.apache.spark:spark-network-common_2.12 Maven

    Versions
    • 3.5.0
    • 3.5.1
    Affected ranges
    • ECOSYSTEM: ≥ 3.5.0, < 3.5.2

    Update to 3.5.2

  • pyspark PyPI

    Versions
    • 2.1.1
    • 2.1.2
    • 2.1.3
    • 2.2.0
    • 2.2.1
    • 2.2.2
    • 2.2.3
    • 2.3.0
    • 2.3.1
    • 2.3.2
    • 2.3.3
    • 2.3.4
    • 2.4.0
    • 2.4.1
    • 2.4.2
    • 2.4.3
    • 2.4.4
    • 2.4.5
    • 2.4.6
    • 2.4.7
    • 2.4.8
    • 3.0.0
    • 3.0.1
    • 3.0.2
    • 3.0.3
    • 3.1.1
    • 3.1.2
    • 3.1.3
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    Affected ranges
    • ECOSYSTEM: < 3.4.4

    Update to 3.4.4

  • pyspark PyPI

    Versions
    • 3.5.0
    • 3.5.1
    Affected ranges
    • ECOSYSTEM: ≥ 3.5.0, < 3.5.2

    Update to 3.5.2

  • pyspark PyPI

    Versions
    • 2.1.1
    • 2.1.2
    • 2.1.3
    • 2.2.0
    • 2.2.1
    • 2.2.2
    • 2.2.3
    • 2.3.0
    • 2.3.1
    • 2.3.2
    • 2.3.3
    • 2.3.4
    • 2.4.0
    • 2.4.1
    • 2.4.2
    • 2.4.3
    • 2.4.4
    • 2.4.5
    • 2.4.6
    • 2.4.7
    • 2.4.8
    • 3.0.0
    • 3.0.1
    • 3.0.2
    • 3.0.3
    • 3.1.1
    • 3.1.2
    • 3.1.3
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    • 3.5.0
    • 3.5.1
    Affected ranges
    • ECOSYSTEM: < 3.4.4 ∪ ≥ 3.5.0, < 3.5.2

    Update to 3.4.4; Update to 3.5.2

Original sources

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