services / Google Cloud / Cloud functions

Cloud functions is a serverless computing service. Functions are triggered in response to events and the code runs in an environment fully managed by Google.

cloudfunctions.​functions.​invoke

Allows execution of a cloud function. Can expose a variety of risks depending on the contents of the cloud function. Also allows for DOS via spamming executions and data injection via execution with fake parameters.

Risks

1. Data exfiltration (CRITICAL)
2. Data manipulation (HIGH)
3. Denial-of-service (HIGH)
4. Spend (MEDIUM)
5. Account discovery (LOW)
6. Data discovery (LOW)
7. Infrastructure discovery (LOW)

Scope: CRITICAL

This privilege may grant access to sensitive data from a significant fraction of organizational functions, allow interruption of critical organizational services, or its exploit could lead to significant privilege escalation.

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