OpenBao LDAP MFA Enforcement Bypass When Using Username As Alias

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.

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

空格转义处理不恰当

OpenBao 安全漏洞

OpenBao是OpenBao开源的一个敏感数据管理软件。 OpenBao 2.3.1及之前版本存在安全漏洞，该漏洞源于LDAP认证方法中username_as_alias参数使用不当，可能导致MFA要求被绕过。

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