103 lines
3.5 KiB
Markdown
103 lines
3.5 KiB
Markdown
---
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title: Formal Verification (Security Models)
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summary: Machine-checked security models for Clawdbot’s highest-risk paths.
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status: draft
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---
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# Formal Verification (Security Models)
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This page tracks Clawdbot’s **formal security models** (TLA+/TLC today; more as needed).
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**Goal (north star):** provide a machine-checked argument that Clawdbot enforces its
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intended security policy (authorization, session isolation, tool gating, and
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misconfiguration safety), under explicit assumptions.
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**What this is (today):** an executable, attacker-driven **security regression suite**:
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- Each claim has a runnable model-check over a finite state space.
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- Many claims have a paired **negative model** that produces a counterexample trace for a realistic bug class.
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**What this is not (yet):** a proof that “Clawdbot is secure in all respects” or that the full TypeScript implementation is correct.
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## Where the models live
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Models are maintained in a separate repo: `vignesh07/clawdbot-formal-models`.
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## Important caveats
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- These are **models**, not the full TypeScript implementation. Drift between model and code is possible.
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- Results are bounded by the state space explored by TLC; “green” does not imply security beyond the modeled assumptions and bounds.
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- Some claims rely on explicit environmental assumptions (e.g., correct deployment, correct configuration inputs).
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## Reproducing results
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Today, results are reproduced by cloning the models repo locally and running TLC (see below). A future iteration could offer:
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- CI-run models with public artifacts (counterexample traces, run logs)
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- a hosted “run this model” workflow for small, bounded checks
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From the models repo:
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```bash
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export PATH="/opt/homebrew/opt/openjdk@21/bin:$PATH" # or any Java 11+
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make <target>
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```
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### Gateway exposure and open gateway misconfiguration
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**Claim:** binding beyond loopback without auth makes remote compromise reachable; token/password blocks unauth attackers (per the model assumptions).
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- Green runs:
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- `make gateway-exposure-v2`
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- `make gateway-exposure-v2-protected`
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- Red (expected):
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- `make gateway-exposure-v2-negative`
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See also: `docs/gateway-exposure-matrix.md` in the models repo.
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### Nodes.run pipeline (highest-risk capability)
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**Claim:** `nodes.run` requires (a) node command allowlist plus declared commands and (b) live approval when configured; approvals are tokenized to prevent replay (in the model).
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- Green runs:
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- `make nodes-pipeline`
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- `make approvals-token`
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- Red (expected):
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- `make nodes-pipeline-negative`
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- `make approvals-token-negative`
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### Pairing store (DM gating)
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**Claim:** pairing requests respect TTL and pending-request caps.
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- Green runs:
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- `make pairing`
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- `make pairing-cap`
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- Red (expected):
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- `make pairing-negative`
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- `make pairing-cap-negative`
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### Ingress gating (mentions + control-command bypass)
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**Claim:** in group contexts requiring mention, an unauthorized “control command” cannot bypass mention gating.
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- Green:
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- `make ingress-gating`
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- Red (expected):
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- `make ingress-gating-negative`
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### Routing/session-key isolation
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**Claim:** DMs from distinct peers do not collapse into the same session unless explicitly linked/configured.
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- Green:
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- `make routing-isolation`
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- Red (expected):
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- `make routing-isolation-negative`
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## Roadmap
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Next models to deepen fidelity:
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- Pairing store concurrency/locking/idempotency
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- Provider-specific ingress preflight modeling
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- Routing identity-links + dmScope variants + binding precedence
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- Gateway auth conformance (proxy/tailscale specifics)
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