Function Call/Tool Call Injection Prevention
Objective
Secure structured tool/function parameters from adversarial manipulation.
Control / requirement
Parameter schema validation + allowlist enforcement + sandboxed execution.
Business impact
Manipulated tool calls can trigger unauthorized API actions, data deletion, or financial transfers. Estimated exposure: $1M–$50M.
Validation approach
Test ID: D2-CTL-05-VTS-001 Test Type: Automated Test Design: Generate malformed and malicious tool call JSON; attempt execution through agent orchestrator. Execution Steps: 1. Load GAISSF™ tool injection dataset (reference: OWASP LLM 2025 tool injection patterns) 2. Submit to orchestrator 3. Verify schema validation blocks invalid calls 4. Check allowlist enforcement Pass Criteria: invalid_call_execution = 0%; schema_validation_pass_rate >= 99.5%; allowlist_enforced = True Independent Verification: Auditor submits auditor-crafted tool payloads and verifies rejection.
Expected evidence
Not separately specified in the available source.
Mapping and source
Not separately specified in the available source.
Implementation guidance
Translate the requirement into system-specific procedures, responsible roles, technical configurations and review conditions. Retain evidence showing both design and operating performance. Where the source provides no separate implementation instruction, do not infer that a single technical mechanism is sufficient.
Assessment considerations
- Confirm scope and applicability.
- Inspect control design and responsible ownership.
- Test representative operation and adverse conditions where appropriate.
- Evaluate evidence provenance, completeness and contradictory evidence.
- Record limitations and notably absent outcomes.