Files
OwnCord/Client/tauri-client/src
J3vbandClaude Opus 4.8 1485e13f9a fix(security): gate TLS trust-on-first-use behind explicit confirmation (F4/F8)
The http and ws proxies accepted ANY certificate on first use and silently
pinned it, forwarding login credentials and the bearer token before the user
ever saw the fingerprint — an on-path attacker at first contact captured them.
The three proxies also duplicated the TLS verifier and TOFU logic verbatim.

- Extract the shared verifier, cert-store helpers, and a pure `decide` function
  into src-tauri/src/tofu.rs (used by the http/ws/livekit proxies).
- Split the trust decision from persistence: a first-use cert is no longer
  pinned or forwarded to. The proxy rejects (ws: Err; http: 502) and emits a
  cert-tofu "first_use" event; the only writer of a pin is the explicit
  accept_cert_fingerprint command.
- Frontend: a global cert-tofu listener (active during the connect page's health
  checks, before any WS connect) surfaces an SSH-style first-use confirmation
  modal. On accept the fingerprint is pinned and the server re-checked; nothing
  is sent to an unconfirmed host.

Closes security-scan F4 (http proxy) and F8 (ws proxy). Verified: client
typecheck/lint/format clean, full unit suite 3311/3311 green (incl. new ws
first-use routing + modal tests). Rust compiles in CI (cargo clippy) per the
client CLAUDE.md; pure tofu logic covered by #[cfg(test)] unit tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-23 12:47:30 +02:00
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