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's Login Multi-Factor Authentication (MFA) system allows enforcing MFA using Time-based One Time Password (TOTP). Due to normalization applied by the underlying TOTP library, codes were accepted which could contain whitespace; this whitespace could bypass internal rate limiting of the MFA method and allow reuse of existing MFA codes. This issue was fixed in version 2.3.2. To work around this, use of rate-limiting quotas can limit an attacker's ability to exploit this: https://openbao.org/api-docs/system/rate-limit-quotas/.
Problem types
CWE-307: Improper Restriction of Excessive Authentication Attempts
Product status
References
github.com/...penbao/security/advisories/GHSA-rxp7-9q75-vj3p
github.com/...ommit/8340a6918f6c41d8f75b6c3845c376d9dc32ed19
discuss.hashicorp.com/...limiting-and-totp-token-reuse/76038