SE-CERT-01: Measurement is from a verified IBM Z Ultravisor¶
| Property | Value |
|---|---|
| Severity | critical |
| Platform | Hardware fleets (collector) |
| Lifecycle stage | hardware |
| Policy | P-04: Attestation evidence is fresh and fully verified |
| Evaluated from | Evidence sent to the service (collector bundles or registry scans), not from a cloud API scan. |
What it checks¶
It passes when:
- The HMAC verifies under the measurement key that only the Ultravisor of a host with a verified IBM Z host-key document can read.
How to fix¶
- Treat this guest as untrusted: pin its SE image's boot header tags in the fleet if it is an approved image, otherwise investigate it.
After the fix, scan again: the check should report PASS.
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-02, NITRO-ATT-03, SGX-CERT-01, SNP-CERT-01, TDX-CERT-01
Evidence recorded¶
Keys in the finding's evidence: config_uid, host_key_hash
Generated from untrust 1.3.0 (commit 7ef462d9a0c3).