NITRO-ATT-02: Captured attestation document is cryptographically verified¶
| Property | Value |
|---|---|
| Severity | critical |
| Platform | AWS Nitro Enclaves |
| Lifecycle stage | attest |
| Policy | P-04: Attestation evidence is fresh and fully verified |
| Mode | Passive: reads only the files and values you pass to the scan. |
What it checks¶
It passes when:
- Attestation document signature, chain, and code PCRs verify.
How to fix¶
- Verify the COSE_Sign1 signature and the leaf->cabundle->AWS Nitro root chain offline, and pin PCR0/1/2/8 to the released enclave build, before releasing any secret to the enclave.
After the fix, scan again: the check should report PASS.
When it is not assessed¶
SKIP:
- No --attestation-doc supplied; skipping check.
ERROR:
- Could not load the attestation document: …
Scan inputs¶
The untrust scan options this check reads:
| Option | Description |
|---|---|
--nitro-attestation-doc |
Path to a captured COSE_Sign1 attestation document (ENCLAVE-06). |
Permissions¶
None. The check reads only the files or values you pass to the scan.
Related¶
- Other checks for policy P-04: CCA-CERT-01, CSPACE-ATT-01, CSPACE-ATT-02, CSPACE-ATT-03, GPU-CERT-01, GPUCC-ATT-01, NITRO-ATT-03, SE-CERT-01, SGX-CERT-01, SNP-CERT-01, TDX-CERT-01
Evidence recorded¶
Keys in the finding's evidence: pcrs
Generated from untrust 1.3.0 (commit 7ef462d9a0c3).