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CSPACE-WIF-02: All providers in the workload identity pool bind attestation

Property Value
Severity high
Platform GCP Confidential Space (AMD SEV-SNP)
Lifecycle stage attest
Mode Passive: read-only cloud API calls.

What it checks

It passes when:

  • All … pool provider(s) bind Confidential Space attestation.

Example failures:

  • … of … pool provider(s) do not bind Confidential Space attestation: …. A weaker sibling is a lateral key-release bypass.
  • … of … pool provider(s) do not bind Confidential Space attestation — a weaker sibling is a lateral bypass.

How to fix

  • Every provider in a pool that can reach the workload's resources must use the Confidential Space issuer and pin dbgstat + image_digest. Remove or scope any general-purpose / unconditioned sibling provider.
  • Remove/scope any non-CS-issuer or unconditioned sibling provider.

After the fix, scan again: the check should report PASS.

When it is not assessed

SKIP:

  • No --wip-provider specified; skipping check.

ERROR:

  • Could not list pool providers: …

Scan inputs

The untrust scan options this check reads:

Option Description
--wip-provider WIF provider resource gating key release.

Permissions

The cloud API calls this check makes, read from the scanner's source:

Cloud API call Permission Access
Google Cloud iam.projects.locations.workloadIdentityPools.providers.list iam.workloadIdentityPoolProviders.list read

See Required permissions for every check on this platform.

Generated from untrust 1.3.0 (commit 7ef462d9a0c3).