OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 2.3.1 and below, OpenBao allowed the assignment of policies and MFA attribution based upon entity aliases, chosen by the underlying auth method. When the username_as_alias=true parameter in the LDAP auth method was in use, the caller-supplied username was used verbatim without normalization, allowing an attacker to bypass alias-specific MFA requirements. This issue was fixed in version 2.3.2. To work around this, remove all usage of the username_as_alias=true parameter and update any entity aliases accordingly.
History

Sat, 09 Aug 2025 02:30:00 +0000

Type Values Removed Values Added
Description OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 2.3.1 and below, OpenBao allowed the assignment of policies and MFA attribution based upon entity aliases, chosen by the underlying auth method. When the username_as_alias=true parameter in the LDAP auth method was in use, the caller-supplied username was used verbatim without normalization, allowing an attacker to bypass alias-specific MFA requirements. This issue was fixed in version 2.3.2. To work around this, remove all usage of the username_as_alias=true parameter and update any entity aliases accordingly.
Title OpenBao LDAP MFA Enforcement Bypass When Using Username As Alias
Weaknesses CWE-156
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-08-09T02:01:29.056Z

Updated: 2025-08-09T02:01:29.056Z

Reserved: 2025-08-04T17:34:24.421Z

Link: CVE-2025-55001

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-08-09T03:15:46.887

Modified: 2025-08-09T03:15:46.887

Link: CVE-2025-55001

cve-icon Redhat

No data.