CVE-2020-8897

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.

Score

CVSS 3.1 8.1 High

Status

Modified - cve-coordination@google.com

Published

2020-11-16

Last modified

2024-08-04

Weaknesses

CWE-310, CWE-327

Affected products

• Aws Encryption Sdk (Amazon)
• Aws Sdk (Amazon)

References

• https://aws.amazon.com/blogs/security/improved-client-side-encryption-explicit-keyids-and-key-commitment/
• https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf