Inadequate Encryption Strength

Affecting com.amazonaws:aws-encryption-sdk-java artifact, versions [,2.0.0)

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Overview

com.amazonaws:aws-encryption-sdk-java is an AWS Encryption SDK for Java

Affected versions of this package are vulnerable to Inadequate Encryption Strength. A weak robustness vulnerability exists in the AWS Encryption SDKs for Java, Python, C and Javalcript. 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.

Remediation

Upgrade com.amazonaws:aws-encryption-sdk-java to version 2.0.0 or higher.

References

CVSS Score

5.0
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    Low
  • Availability
    Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:R
Credit
Thai thaidn Duong
CVE
CVE-2020-8897
CWE
CWE-326
Snyk ID
SNYK-JAVA-COMAMAZONAWS-1040475
Disclosed
16 Nov, 2020
Published
16 Nov, 2020