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CVE-2020-8897

CVE-2020-8897 · Robustness weakness in AWS KMS and Encryption SDKs

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

A weak robustness vulnerability exists in the AWS Encryption SDKs for Java, Python, C and Javalcript prior to versions 2.0.0. Due to the non-committing property of AES-GCM (and other AEAD ciphers such as AES-GCM-SIV or (X)ChaCha20Poly1305) used by the SDKs to encrypt messages, an attacker can craft a unique cyphertext which will decrypt to multiple different results, and becomes especially relevant in a multi-recipient setting. We recommend users update their SDK to 2.0.0 or later.

CVSS 4.8 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • aws sdk

    Versions
    • ≥ stable, < 2.0.0: Affected (custom)

    Update to 2.0.0

  • com.amazonaws:aws-encryption-sdk-java Maven

    Versions
    • 0.0.1
    • 1.3.0
    • 1.3.1
    • 1.3.1-STAGING
    • 1.3.2
    • 1.3.3
    • 1.3.4
    • 1.3.5
    • 1.3.6
    • 1.4.0
    • 1.4.1
    • 1.5.0
    • 1.6.0
    • 1.6.1
    • 1.6.2
    • 1.7.0
    • 1.9.0
    • 1.9.1
    • 1.9.2
    Affected ranges
    • ECOSYSTEM: < 2.0.0

    Update to 2.0.0

  • aws-encryption-sdk PyPI

    Versions
    • 1.10.0
    • 1.10.1
    • 1.2.0
    • 1.2.2
    • 1.3.0
    • 1.3.1
    • 1.3.2
    • 1.3.3
    • 1.3.4
    • 1.3.5
    • 1.3.6
    • 1.3.7
    • 1.3.8
    • 1.4.0
    • 1.4.1
    • 1.7.1
    • 1.9.0
    Affected ranges
    • ECOSYSTEM: < 2.0.0

    Update to 2.0.0

  • aws-encryption-sdk PyPI

    Versions
    • 1.2.0
    • 1.2.2
    • 1.3.0
    • 1.3.1
    • 1.3.2
    • 1.3.3
    • 1.3.4
    • 1.3.5
    • 1.3.6
    • 1.3.7
    • 1.3.8
    • 1.4.0
    • 1.4.1
    • 1.7.1
    • 1.9.0
    • 1.10.0
    • 1.10.1
    Affected ranges
    • ECOSYSTEM: < 2.0.0

    Update to 2.0.0

Original sources

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