Neutralizing exploitability at the root through architectural boundary validation.
The framework includes a standardized data model to export architectural violations to vulnerability management systems.
[
{
"alert_id": "L0-ETBV-MH-72476EFE",
"timestamp": "2026-06-30T17:42:34.707733Z",
"class": "Emergent Trust Boundary Violation",
"systemic_severity": "CRITICAL",
"boundary_metrics": {
"boundaries_crossed": 2,
"initial_zone": "Zone_1_UserSpace",
"terminal_zone": "Zone_3_HardwareTrustZone"
},
"emergent_chain": [
{
"hop_index": 1,
"source_component": "Update_Daemon",
"target_component": "Bootloader_Parser",
"boundary_type": "IPC_Bridge",
"local_weakness": "CWE-77",
"leak_signature": "local_shell_access"
},
{
"hop_index": 2,
"source_component": "Bootloader_Parser",
"target_component": "Kernel_Secure_World",
"boundary_type": "SMC_Call_Gateway",
"local_weakness": "CWE-347",
"leak_signature": "arbitrary_binary_execution"
}
]
}
]- Zero Implicit Trust Barriers: Strict parameter checks applied natively at entry points inside
etb_gate.py. - Input Canonicalization Rules: Enforcing strict schema boundaries to break multi-component execution chains before they parse.
Run the included script to see ETB in action:
python3 demo_etb.py # Expected output: 2 emergent chains detected (see Proof of Concept below)| Category | Invariant | Example Blocked |
|---|---|---|
| Structural Alignment | Request must contain '=' and be ASCII | Raw binary payload, non‑ASCII characters |
| Protocol Bounds | Value must not exceed domain limits | Modbus write 150 (max 100) |
| Computational Loop Caps | State transitions bounded; infinite loops rejected | 3n+1 (Collatz) attack |
| Consensus / Byzantine | Quorum required (e.g., 4≥3 signatures) | Unauthorized state change |
All invariants are enforced before execution – no trust without validation.
The ETB AAV LayerZero scanner successfully detects emergent chains across trust boundaries. Below is a live scan output from the PFTT (Permanent Facility Testing Tool) case study, demonstrating how CWE-77 chains into CWE-347 and CWE-94 across three distinct trust zones, resulting in full system compromise.
[*] Initializing LayerZero Trust Boundary Mapping...
[!] Trust Boundary Crossed: Update_Daemon (Zone 1) -> Bootloader_Parser (Zone 2)
[ALERT] Emergent Chain Found!
└── Path: Update_Daemon (CWE-77) ===> Bootloader_Parser (CWE-347)
└── Impact: Privileges leaked via match on 'local_shell_access'
[!] Trust Boundary Crossed: Bootloader_Parser (Zone 2) -> Kernel_Space (Zone 3)
[ALERT] Emergent Chain Found!
└── Path: Bootloader_Parser (CWE-347) ===> Kernel_Space (CWE-94)
└── Impact: Privileges leaked via match on 'arbitrary_binary_execution'
[*] Scan Complete. Total Emergent Trust Boundary Violations Found: 2