OpenBao TOTP Secrets Engine Code Reuse
### Impact OpenBao's TOTP secrets engine could accept valid codes multiple times rather than strictly-once. This was caused by unexpected normalization in the underlying TOTP library. ### Patches OpenBao v2.3.2 will patch this issue. In patching, codes which were not normalized (strictly N numeric digits) will now be rejected. This is a potentially breaking change. ### Workarounds TOTP code verification is a privileged action; only trusted systems should be verifying codes. Ensure that all codes are first normalized before submitting to the OpenBao endpoint. ### References This issue was disclosed to HashiCorp and is the OpenBao equivalent of the following tickets: - https://discuss.hashicorp.com/t/hcsec-2025-17-vault-totp-secrets-engine-code-reuse/76036 - https://nvd.nist.gov/vuln/detail/CVE-2025-6014
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-55000US | — | — | ||
OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 0.1.0 through 2.3.1, OpenBao's… | ||||
references
External citations — patches, advisories, analysis.
- https://discuss.hashicorp.com/t/hcsec-2025-17-vault-totp-secrets-engine-code-reuse/76036WEB
- https://github.com/openbao/openbaoPACKAGE
- https://github.com/openbao/openbao/commit/183891f8d535d5b6eb3d79fda8200cade6de99e1WEB
- https://github.com/openbao/openbao/security/advisories/GHSA-f7c3-mhj2-9pvgWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-55000ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2025-6014ADVISORY
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