In Nimbus JOSE+JWT before 4.39, there is no integer-overflow check when converting length values from bytes to bits, which allows attackers to conduct HMAC bypass attacks by shifting Additional Authenticated Data (AAD) and ciphertext so that different plaintext is obtained for the same HMAC.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-08-20T16:00:00

Updated: 2024-08-05T18:51:07.371Z

Reserved: 2017-08-20T00:00:00

Link: CVE-2017-12972

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-08-20T16:29:00.237

Modified: 2023-11-07T02:38:32.757

Link: CVE-2017-12972

cve-icon Redhat

No data.