CVE-2020-8897 MEDIUM

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

Vendor Amazon
Product AWS SDK
Weakness CWE-310
Published November 16, 2020
Last update August 4, 2024
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality None
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 16, 2020 CVE published
August 4, 2024 Record updated