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CSPACE-LAUNCH-01: Workload launch policy forbids host env/command override

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

What it checks

It passes when:

  • Launch policy pins env/command: the launcher refuses host-supplied tee-env-*/tee-cmd.

How to fix

  • Rebuild the workload image without tee.launch_policy.allow_env_override / allow_cmd_override (and allow_capabilities) so the Confidential Space launcher refuses operator-supplied tee-env-*/tee-cmd. Bake required configuration into the signed image rather than passing it through VM metadata.
  • Rebuild the workload image without tee.launch_policy.allow_env_override/allow_cmd_override; bake configuration into the signed image instead of passing it through VM metadata.

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

When it is not assessed

SKIP:

  • Need --gcp-instance, --gcp-zone, and --gcp-project; skipping check.

ERROR:

  • Could not read the workload image launch policy: …

Scan inputs

The untrust scan options this check reads:

Option Description
--gcp-instance Confidential VM instance name.
--gcp-project GCP project ID.
--gcp-zone Zone of the Confidential VM.

Permissions

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

Cloud API call Permission Access
Google Cloud compute.instances.get compute.instances.get read

See Required permissions for every check on this platform.

Generated from untrust 1.3.0 (commit 7ef462d9a0c3).