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CVE-2020-8897
Good to know:


Date: November 16, 2020
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.
Language: Python
Severity Score
Related Resources (6)
Severity Score
Weakness Type (CWE)
Top Fix

Upgrade Version
Upgrade to version @aws-crypto/client-node - 1.9.0;@aws-crypto/caching-materials-manager-node - 1.9.0;@aws-crypto/material-management-browser - 1.9.0;@aws-crypto/kms-keyring-node - 1.9.0;@aws-crypto/raw-aes-keyring-browser - 1.9.0;@aws-crypto/integration-node - 1.9.0;@aws-crypto/raw-rsa-keyring-browser - 1.9.0;@aws-crypto/material-management-node - 1.9.0;@aws-crypto/kms-keyring-browser - 1.9.0;@aws-crypto/encrypt-node - 1.9.0;@aws-crypto/raw-rsa-keyring-node - 1.9.0;aws-encryption-sdk - 1.9.0;@aws-crypto/client-browser - 1.9.0;@aws-crypto/material-management - 1.9.0;@aws-crypto/raw-keyring - 1.9.0;@aws-crypto/caching-materials-manager-browser - 1.9.0;@aws-crypto/example-node - 1.9.0;@aws-crypto/kms-keyring - 1.9.0;@aws-crypto/integration-browser - 1.9.0;@aws-crypto/encrypt-browser - 1.9.0;@aws-crypto/serialize - 1.9.0;@aws-crypto/example-browser - 1.9.0;@aws-crypto/raw-aes-keyring-node - 1.9.0;@aws-crypto/decrypt-browser - 1.9.0;@aws-crypto/decrypt-node - 1.9.0;@aws-crypto/cache-material - 1.9.0;com.amazonaws:aws-encryption-sdk-java:1.9.0
CVSS v3.1
Base Score: |
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---|---|
Attack Vector (AV): | NETWORK |
Attack Complexity (AC): | HIGH |
Privileges Required (PR): | LOW |
User Interaction (UI): | REQUIRED |
Scope (S): | UNCHANGED |
Confidentiality (C): | NONE |
Integrity (I): | HIGH |
Availability (A): | NONE |
CVSS v2
Base Score: |
|
---|---|
Access Vector (AV): | NETWORK |
Access Complexity (AC): | LOW |
Authentication (AU): | SINGLE |
Confidentiality (C): | PARTIAL |
Integrity (I): | PARTIAL |
Availability (A): | NONE |
Additional information: |