2fd26add1a
4 Commits
| Author | SHA1 | Message | Date | |
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Administrator
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8d757a99dd |
fix(diagnostics): harden read-only agent — grep ReDoS, prototype-chain whitelist bypass, redaction gaps
Intensive end-to-end testing (a live gateway-MCP <-> agent integration harness +
an adversarial redaction/abuse probe + an independent security audit) surfaced
three real issues in the shipped read-only diagnostic agent. All run in lib/**,
which is packaged in the app.
1. grep ReDoS froze the Electron main process. read_log compiled the
client-supplied grep into `new RegExp(grep, 'i')` and ran it synchronously over
the log tail IN the main process. A catastrophic pattern (e.g. "(a+)+$" against
a long line) hangs the whole app — empirically confirmed (8s timeout, killed).
JS regex is synchronous and uncancellable, so grep is now a case-insensitive
literal substring filter with "|" alternation ("error|timeout|502"). Provably
linear-time; covers the real diagnostic need.
2. Prototype-chain whitelist bypass. The op table was a plain object literal, so
handle("constructor" | "toString" | "valueOf", ...) resolved an inherited
Object.prototype function, passed the `typeof fn === 'function'` guard and
returned {ok:true}. Harmless functions today, but a whitelist-integrity hole.
Now guarded with a string check + Object.prototype.hasOwnProperty.
3. Redaction defense-in-depth gaps. redactLogText now also scrubs: basic-auth URL
passwords (scheme://user:pass@host), Authorization: Basic, JWTs (eyJ...x.y.z),
and bare/JSON session= values. Mostly theoretical in today's readable logs
(secret-bearing bodies go to the excluded doodstream-debug.log; other hosters
throw static strings) but matters as the verbose-logging surface grows.
Verified: 383 app tests (incl. new regression tests for all three), the live
gateway-MCP integration harness (all 14 tools, zero leaks, error paths), the
adversarial probe (14/14+ secret shapes scrubbed, ReDoS 1ms, lockout, malformed
args), e2e gate, lint 0 errors. Only residual: a standalone high-entropy blob with
zero key/Bearer/URL context — inherent to any denylist, acknowledged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Administrator
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d69e5c39bf |
feat(diagnostics): MCP gateway + harden redaction so no secret ever leaves the box
Adds the connect-by-code side of remote diagnostics and closes two real secret-leak vectors that an end-to-end gateway<->agent test surfaced. Gateway (gateway/, local stdio MCP, Claude connects once): - 14 read-only tools (server_health hub, read_log, list_logs, list_errors, get_queue_state, get_history, get_config_redacted, get_system_info, get_rotation_state, get_app_events + connect/disconnect/list/current). - The HOST is always supplied by the operator, never taken from the code. - TLS fingerprint pinning is enforced in the socket 'open' handler BEFORE the token is sent (wss opt-in); plain ws is loopback-only. - registry.json (holds bearer tokens) is gitignored; only an empty example ships. Security hardening (gates every off-box payload): - redactLogText now scrubs opaque bearer/token-family secrets that are NOT stored config credentials (e.g. a session token a hoster returns inside an error string): bare token/auth_token/refresh_token/session_token + standalone "Bearer <opaque>". Benign "token bucket" prose is left intact. - get_config_redacted deep-redacts every string leaf (JSON-safe, per-leaf, so the cookie/sess line patterns can't gobble across a compact-JSON field) and drops the history subtree (served by get_history with its own per-error redaction). This plugs leaks via globalSettings.pendingQueue[].error etc. Bind-address safety: - _safeDiagBindAddress() forces the diagnostic agent to 127.0.0.1/::1; the 0.0.0.0 UI option is removed. Direct LAN/Internet bind stays disabled until encrypted transport (wss) exists — remote access goes through an SSH/VPN tunnel to loopback. (Never plaintext ws:// on all interfaces.) Tests: end-to-end gateway<->agent gate (connect -> server_health/read_log/ get_config_redacted, asserts zero secret leakage, rejects doodstream log, path traversal and write ops); + redaction regression tests in the main suite. 385 app tests + 9 gateway tests pass; lint 0 errors. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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Administrator
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ab7313f32c |
feat(diagnostics): read-only remote diagnostics agent over the existing WS transport (app side)
Adds the server/app half of a remote-diagnostics system so Claude (via a local MCP gateway, added separately) can read a server's full state to diagnose problems: logs, errors, queue/app state, redacted config, system health. All read-only; security review folded in as hard requirements. Architecture (design-verified): - A SECOND, independent RemoteServer instance (diagnosticMode) on its own port (default 9110, bind 127.0.0.1) with NO capture/input callbacks, so screen capture and sendInputEvent are structurally unreachable from the diagnostic path. The existing screen-share server (port 9100) is byte-for-byte unchanged. - lib/remote-server.js: a `host` bind option, a post-auth `diag-request` branch that delegates to onDiagnosticRequest and replies with a reqId-correlated `diag-response`, a `diagnosticMode` guard (capture never spawns), a timing-safe token compare (length-guarded), and getLastAccess(). - lib/diagnostics-agent.js: handle(op,args) enforces a HARDCODED read-only op whitelist as the sole authority — no write/exec op, no run_health_check. - lib/diagnostics-collectors.js: pure, dependency-injected collectors (server_health one-shot hub, read_log, list_errors, get_queue_state, get_history, get_config_redacted, get_system_info, list_logs, get_app_events, get_rotation_state, get_health) reusing support-bundle + stats. Security (all mandatory, implemented): - Redaction gates every off-box payload. support-bundle now adds webhookUrl + diagToken to CRED_KEYS, and exports redactLogText (value-scrub of live secret strings + pattern-scrub of Discord webhooks / Bearer / api_key= / cookies / sess ids) + valueScrub + collectSecretValues. read_log takes a logical NAME (no path traversal); doodstream-debug.log is excluded from the readable set (it logs live api-key-bearing HTML). grep is length-capped (ReDoS guard). - diagnostics config subtree (enabled/port/token/label/codeIssuedAt/bindAddress) defaults OFF, bind 127.0.0.1; deep-merge makes it migration-free. The server-owned token is preserved against renderer clobber in both save-global-settings handlers; the diagnostics:* IPC is the only mutator. - app.requestSingleInstanceLock() (also the approved fix #6) so a relaunch can't EADDRINUSE-kill the agent and two instances can't clobber the config. main.js: buildDiagnosticCode (mhu1_ base64url, no host embedded), start/stop + auto-start-on-launch + stop-on-quit, the four diagnostics:* IPC handlers. renderer: a "Diagnose-Zugriff" settings subtab (toggle, port, bind-address, copyable connection code + regenerate, status, read-only security note). 382 tests pass (incl. 11 new: collectors+redaction, agent whitelist, and a live RemoteServer protocol test proving auth->diag-response correlation, that a diagnostic client never triggers the capture window, and brute-force lockout). Lint clean (0 errors). Smoke boots identically to baseline. The standalone MCP gateway package + operator setup docs land in a follow-up commit. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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Administrator
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f42c55c521 | feat(diagnostics): log levels, support bundle export, verbose toggle, log paths panel |