CVE Vulnerabilities

CVE-2023-4680

Reusing a Nonce, Key Pair in Encryption

Published: Sep 15, 2023 | Modified: Nov 21, 2024
CVSS 3.x
6.8
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
6.8 MODERATE
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Ubuntu

HashiCorp Vault and Vault Enterprise transit secrets engine allowed authorized users to specify arbitrary nonces, even with convergent encryption disabled. The encrypt endpoint, in combination with an offline attack, could be used to decrypt arbitrary ciphertext and potentially derive the authentication subkey when using transit secrets engine without convergent encryption. Introduced in 1.6.0 and fixed in 1.14.3, 1.13.7, and 1.12.11.

Weakness 

Nonces should be used for the present occasion and only once.

Affected Software 

Name Vendor Start Version End Version
Vault Hashicorp 1.6.0 (including) 1.12.11 (excluding)
Vault Hashicorp 1.13.0 (including) 1.13.7 (excluding)
Vault Hashicorp 1.14.0 (including) 1.14.3 (excluding)

Potential Mitigations 

References