CVE-2020-8897
Medium
Description
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.
SeverityMedium
CVSS4.8
Exploit probability—
ProductAmazon Aws Encryption Sdk
PublishedNov 16, 2020
First seenNov 16, 2020
Weakness typeCWE-310CWE-310
How to fix
Update
- amazon aws_encryption_sdk2.0.0 or later
- com.amazonaws:aws-encryption-sdk-java2.0.0 or later
- aws-encryption-sdk2.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| amazon aws_encryption_sdk | v < 2.0.0 | 2.0.0 |
| com.amazonaws:aws-encryption-sdk-javaMaven | v < 2.0.0 | 2.0.0 |
| aws-encryption-sdkPyPI | v < 2.0.0 | 2.0.0 |
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