Description
OpenNHP through 1.0.2 selects its trusted-execution attestation verifier based on attacker-supplied evidence containing a test_purpose key, causing the FallbackVerifier to execute unconditionally. Attackers can bypass attestation verification by including the test_purpose key in evidence and providing enrolled measure and serial number pairs from the allowlist to gain unauthorized access.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenNHP | opennhp | ≤ 1.0.2 | — |
References
- GitHub Issue #1732 issue-tracking
- https://github.com/OpenNHP/opennhp product
- the fallback verifier always succeeds and is selected by an evidence key technical-description
- VulnCheck Advisory: OpenNHP through 1.0.2 Authentication Bypass via Fallback Verifier third-party-advisory