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68 lines
3.1 KiB
Markdown
68 lines
3.1 KiB
Markdown
# Workroom Security Model
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## Scope
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This document covers the security boundaries of CodeWhale Workrooms — the
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durable, addressable containers for threaded agent conversations described
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in [RFC 3209](rfcs/3209-workrooms.md).
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Workrooms do **not** introduce any new network services, cloud dependencies,
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or default-on public sharing. Security responsibility stays with the
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operator who controls the Runtime API.
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This document describes the intended security contract for the v0.9 workroom
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surface. In v0.8.62, only protocol data types and link parsing have landed.
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Persistent state, Runtime API endpoints, token scoping, event storage, and
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model-visible link resolution remain follow-up work.
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## Principles
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1. **Local-first.** Future persisted workroom state should live under the
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CodeWhale home directory, protected by user-only filesystem permissions.
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No cloud sync, no telemetry, no third-party hosting.
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2. **No secrets in links.** `codewhale://workroom/wr_...` URLs contain only
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opaque UUIDs. They carry no API keys, bearer tokens, passwords, or file
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paths. An adversary with a workroom link can do nothing without Runtime
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API access.
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3. **No public read paths.** Future workroom endpoints must require a valid
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bearer token in the `Authorization` header. There should be no
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unauthenticated `/workroom/...` route.
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4. **No secrets in events.** `WorkroomEvent` payloads must never contain
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API keys, auth tokens, or plaintext credentials. The `ArtifactLinked`
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event kind references file paths, not contents. Events are intended for
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indexing/reference, not for replaying agent tool output.
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5. **Share is explicit.** A workroom is `Private` by default. The operator
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may mark it `Shared` and list allowed bearer tokens. The operator
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controls which tokens are issued, rotated, and revoked.
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## Threat model
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| Threat | Mitigation |
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|---|---|
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| Attacker obtains a workroom link | Link contains only opaque UUID; resolution requires Runtime API auth |
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| Attacker brute-forces workroom IDs | UUID v4 (`2^122` space); future APIs should add rate limiting before exposing lookup surfaces |
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| Attacker injects a malicious event | Future event writes should flow only through trusted Runtime clients |
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| Attacker exfiltrates workroom state | Future filesystem state should be gated by OS user permissions and runtime auth |
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| Bearer token leaks | Operator rotates tokens; future sharing rules should be revocable without touching workroom state |
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## API auth
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Future workroom endpoints should inherit the same auth middleware as other
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protected routes (`/thread`, `/app`, `/tool`, etc.):
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- `Authorization: Bearer <token>` header required
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- Token validated against the runtime's configured bearer token(s)
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- 401 Unauthorized if missing or invalid
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## Future work
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| Item | Risk | Status |
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|---|---|---|
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| Event encryption at rest | In scope for Phase 2 if workrooms move to a multi-user model | Not implemented |
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| Audit log for shared workrooms | Useful if shared tokens are used across operators | Not implemented |
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| Token scoping (read/write/admin) | Currently all tokens have full access | Not planned |
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