services / Google Cloud / Identity Aware Proxy tunnel instances resource type.

Refers to a particular VM instance

IAP is used to control access to cloud services. Changes to IAP related settings could remove access from mission-critical applications or grant an attacker access to sensitive resources.

iap.​tunnelInstances.​setIamPolicy

Risks

1. Policy destruction (CRITICAL)
2. Privilege escalation (CRITICAL)
3. Denial-of-access (EVASION)

Scope: HIGH

This privilege may grant access to sensitive data from a single organizational function, or allow interruption of a service supporting a single organizational function.

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