A vulnerability in the in-band key negotiation exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. An attacker with write access to the targeted bucket can change the encryption algorithm of an object in the bucket, which can then allow them to change AES-GCM to AES-CTR. Using this in combination with a decryption oracle can reveal the authentication key used by AES-GCM as decrypting the GMAC tag leaves the authentication key recoverable as an algebraic equation. It is recommended to update your SDK to V2 or later, and re-encrypt your files.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: Google
Published: 2020-08-11T19:20:14
Updated: 2024-08-04T10:12:10.969Z
Reserved: 2020-02-12T00:00:00
Link: CVE-2020-8912
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2020-08-11T20:15:13.323
Modified: 2020-08-17T19:31:42.737
Link: CVE-2020-8912
Redhat