Security features bypass in Vault and Vault Enterprise - CVE-2023-4680
Published: September 15, 2023
Vulnerability identifier: #VU80812
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-4680
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: HashiCorp
Affected software:
Vault
Vault Enterprise
Vault
Vault Enterprise
Detailed vulnerability description
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to an error when enforcing policies related to convergent encryption feature. Software does not restrict the use of user-provided nonces when performing encryption operations on the transit secrets engine when convergent encryption is not enabled. A remote user authorized by Vault policies to encrypt transit data may be able to decrypt arbitrary ciphertext by performing encryption operations using known plaintexts and nonces.
How to mitigate CVE-2023-4680
Install updates from vendor's website.