CVE-2023-45140 MEDIUM

CVE-2023-45140: Group-based JIT MFA bypass on scp and sftp in The Bastion

Vendor Ovh
Product the-bastion
Weakness CWE-306 · Missing auth
Published November 8, 2023
Last update September 12, 2024
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The Bastion provides authentication, authorization, traceability and auditability for SSH accesses. SCP and SFTP plugins don't honor group-based JIT MFA. Establishing a SCP/SFTP connection through The Bastion via a group access where MFA is enforced does not ask for additional factor. This abnormal behavior only applies to per-group-based JIT MFA. Other MFA setup types, such as Immediate MFA, JIT MFA on a per-plugin basis and JIT MFA on a per-account basis are not affected. This issue has been patched in version 3.14.15.

Key dates

02Disclosure timeline

November 8, 2023 CVE published
September 12, 2024 Record updated