2 Commits

Author	SHA1	Message	Date
Garry Tan	7e96fe299b	fix: security wave 3 — 12 fixes, 7 contributors (v0.16.4.0) (#988) ... * fix(security): validateOutputPath symlink bypass — check file-level symlinks validateOutputPath() previously only resolved symlinks on the parent directory. A symlink at /tmp/evil.png → /etc/crontab passed the parent check (parent is /tmp, which is safe) but the write followed the symlink outside safe dirs. Add lstatSync() check: if the target file exists and is a symlink, resolve through it and verify the real target is within SAFE_DIRECTORIES. ENOENT (file doesn't exist yet) falls through to the existing parent-dir check. Closes #921 Co-Authored-By: Yunsu <Hybirdss@users.noreply.github.com> * fix(security): shell injection in bin/ scripts — use env vars instead of interpolation gstack-settings-hook interpolated $SETTINGS_FILE directly into bun -e double-quoted blocks. A path containing quotes or backticks breaks the JS string context, enabling arbitrary code execution. Replace direct interpolation with environment variables (process.env). Same fix applied to gstack-team-init which had the same pattern. Systematic audit confirmed only these two scripts were vulnerable — all other bin/ scripts already use stdin piping or env vars. Closes #858 Co-Authored-By: Gus <garagon@users.noreply.github.com> * fix(security): cookie-import path validation bypass + hardcoded /tmp Two fixes: 1. cookie-import relative path bypass (#707): path.isAbsolute() gated the entire validation, so relative paths like "sensitive-file.json" bypassed the safe-directory check entirely. Now always resolves to absolute path with realpathSync for symlink resolution, matching validateOutputPath(). 2. Hardcoded /tmp in cookie-import-browser (#708): openDbFromCopy used /tmp directly instead of os.tmpdir(), breaking Windows support. Also adds explicit imports for SAFE_DIRECTORIES and isPathWithin in write-commands.ts (previously resolved implicitly through bundler). Closes #852 Co-Authored-By: Toby Morning <urbantech@users.noreply.github.com> * fix(security): redact form fields with sensitive names, not just type=password Form redaction only applied to type="password" fields. Hidden and text fields named csrf_token, api_key, session_id, etc. were exposed unredacted in LLM context, leaking secrets. Extend redaction to check field name and id against sensitive patterns: token, secret, key, password, credential, auth, jwt, session, csrf, sid, api_key. Uses the same pattern style as SENSITIVE_COOKIE_NAME. Closes #860 Co-Authored-By: Gus <garagon@users.noreply.github.com> * fix(security): restrict session file permissions to owner-only Design session files written to /tmp with default umask (0644) were world-readable on shared systems. Sessions contain design prompts and feedback history. Set mode 0o600 (owner read/write only) on both create and update paths. Closes #859 Co-Authored-By: Gus <garagon@users.noreply.github.com> * fix(security): enforce frozen lockfile during setup bun install without --frozen-lockfile resolves ^semver ranges from npm on every run. If an attacker publishes a compromised compatible version of any dependency, the next ./setup pulls it silently. Add --frozen-lockfile with fallback to plain install (for fresh clones where bun.lock may not exist yet). Matches the pattern already used in the .agents/ generation block (line 237). Closes #614 Co-Authored-By: Alberto Martinez <halbert04@users.noreply.github.com> * fix: remove duplicate recursive chmod on /tmp in Dockerfile.ci chmod -R 1777 /tmp recursively sets sticky bit on files (no defined behavior), not just the directory. Deduplicate to single chmod 1777 /tmp. Closes #747 Co-Authored-By: Maksim Soltan <Gonzih@users.noreply.github.com> * fix(security): learnings input validation + cross-project trust gate Three fixes to the learnings system: 1. Input validation in gstack-learnings-log: type must be from allowed list, key must be alphanumeric, confidence must be 1-10 integer, source must be from allowed list. Prevents injection via malformed fields. 2. Prompt injection defense: insight field checked against 10 instruction-like patterns (ignore previous, system:, override, etc.). Rejected with clear error message. 3. Cross-project trust gate in gstack-learnings-search: AI-generated learnings from other projects are filtered out. Only user-stated learnings cross project boundaries. Prevents silent prompt injection across codebases. Also adds trusted field (true for user-stated source, false for AI-generated) to enable the trust gate at read time. Closes #841 Co-Authored-By: Ziad Al Sharif <Ziadstr@users.noreply.github.com> * feat(security): track cookie-imported domains and scope cookie imports Foundation for origin-pinned JS execution (#616). Tracks which domains cookies were imported from so the JS/eval commands can verify execution stays within imported origins. Changes: - BrowserManager: new cookieImportedDomains Set with track/get/has methods - cookie-import: tracks imported cookie domains after addCookies - cookie-import-browser: tracks domains on --domain direct import - cookie-import-browser --all: new explicit opt-in for all-domain import (previously implicit behavior, now requires deliberate flag) Closes #615 Co-Authored-By: Alberto Martinez <halbert04@users.noreply.github.com> * feat(security): pin JS/eval execution to cookie-imported origins When cookies have been imported for specific domains, block JS execution on pages whose origin doesn't match. Prevents the attack chain: 1. Agent imports cookies for github.com 2. Prompt injection navigates to attacker.com 3. Agent runs js document.cookie → exfiltrates github cookies assertJsOriginAllowed() checks the current page hostname against imported cookie domains with subdomain matching (.github.com allows api.github.com). When no cookies are imported, all origins allowed (nothing to protect). about:blank and data: URIs are allowed (no cookies at risk). Depends on #615 (cookie domain tracking). Closes #616 Co-Authored-By: Alberto Martinez <halbert04@users.noreply.github.com> * feat(security): add persistent command audit log Append-only JSONL audit trail for all browse server commands. Unlike in-memory ring buffers, the audit log persists across restarts and is never truncated. Each entry records: timestamp, command, args (truncated to 200 chars), page origin, duration, status, error (truncated to 300 chars), hasCookies flag, connection mode. All writes are best-effort — audit failures never block command execution. Log stored at ~/.gstack/.browse/browse-audit.jsonl. Closes #617 Co-Authored-By: Alberto Martinez <halbert04@users.noreply.github.com> * fix(security): block hex-encoded IPv4-mapped IPv6 metadata bypass URL constructor normalizes ::ffff:169.254.169.254 to ::ffff:a9fe:a9fe (hex form), which was not in the blocklist. Similarly, ::169.254.169.254 normalizes to ::a9fe:a9fe. Add both hex-encoded forms to BLOCKED_METADATA_HOSTS so they're caught by the direct hostname check in validateNavigationUrl. Closes #739 Co-Authored-By: Osman Mehmood <mehmoodosman@users.noreply.github.com> * chore: bump version and changelog (v0.16.4.0) Security wave 3: 12 fixes, 7 contributors. Cookie origin pinning, command audit log, domain tracking. Symlink bypass, path validation, shell injection, form redaction, learnings injection, IPv6 SSRF, session permissions, frozen lockfile. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Yunsu <Hybirdss@users.noreply.github.com> Co-authored-by: Gus <garagon@users.noreply.github.com> Co-authored-by: Toby Morning <urbantech@users.noreply.github.com> Co-authored-by: Alberto Martinez <halbert04@users.noreply.github.com> Co-authored-by: Maksim Soltan <Gonzih@users.noreply.github.com> Co-authored-by: Ziad Al Sharif <Ziadstr@users.noreply.github.com> Co-authored-by: Osman Mehmood <mehmoodosman@users.noreply.github.com> Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-13 07:49:37 -10:00
Garry Tan	b73f364411	feat: browser data platform for AI agents (v0.16.0.0) (#907) ... * refactor: extract path-security.ts shared module validateOutputPath, validateReadPath, and SAFE_DIRECTORIES were duplicated across write-commands.ts, meta-commands.ts, and read-commands.ts. Extract to a single shared module with re-exports for backward compatibility. Also adds validateTempPath() for the upcoming GET /file endpoint (TEMP_DIR only, not cwd, to prevent remote agents from reading project files). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: default paired agents to full access, split SCOPE_CONTROL The trust boundary for paired agents is the pairing ceremony itself, not the scope. An agent with write scope can already click anything and navigate anywhere. Gating js/cookies behind --admin was security theater. Changes: - Default pair scopes: read+write+admin+meta (was read+write) - New SCOPE_CONTROL for browser-wide destructive ops (stop, restart, disconnect, state, handoff, resume, connect) - --admin flag now grants control scope (backward compat) - New --restrict flag for limited access (e.g., --restrict read) - Updated hint text: "re-pair with --control" instead of "--admin" Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: add media and data commands for page content extraction media command: discovers all img/video/audio/background-image elements on the page. Returns JSON with URLs, dimensions, srcset, loading state, HLS/DASH detection. Supports --images/--videos/--audio filters and optional CSS selector scoping. data command: extracts structured data embedded in pages (JSON-LD, Open Graph, Twitter Cards, meta tags). One command returns product prices, article metadata, social share info without DOM scraping. Both are READ scope with untrusted content wrapping. Shared media-extract.ts helper for reuse by the upcoming scrape command. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: add download, scrape, and archive commands download: fetch any URL or @ref element to disk using browser session cookies via page.request.fetch(). Supports blob: URLs via in-page base64 conversion. --base64 flag returns inline data URI (cap 10MB). Detects HLS/DASH and rejects with yt-dlp hint. scrape: bulk media download composing media discovery + download loop. Sequential with 100ms delay, URL deduplication, configurable --limit. Writes manifest.json with per-file metadata for machine consumption. archive: saves complete page as MHTML via CDP Page.captureSnapshot. No silent fallback -- errors clearly if CDP unavailable. All three are WRITE scope (write to disk, blocked in watch mode). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: add GET /file endpoint for remote agent file retrieval Remote paired agents can now retrieve downloaded files over HTTP. TEMP_DIR only (not cwd) to prevent project file exfiltration. - Bearer token auth (root or scoped with read scope) - Path validation via validateTempPath() (symlink-aware) - 200MB size cap - Extension-based MIME detection - Zero-copy streaming via Bun.file() Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: add scroll --times N for automated repeated scrolling Extends the scroll command with --times N flag for infinite feed scraping. Scrolls N times with configurable --wait delay (default 1000ms) between each scroll for content loading. Usage: scroll --times 10 scroll --times 5 --wait 2000 scroll --times 3 .feed-container Composable with scrape: scroll to load content, then scrape images. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: add network response body capture (--capture/--export/--bodies) The killer feature for social media scraping. Extends the existing network command to intercept API response bodies: network --capture [--filter graphql] # start capturing network --capture stop # stop network --export /tmp/api.jsonl # export as JSONL network --bodies # show summary Uses page.on('response') listener with URL pattern filtering. SizeCappedBuffer (50MB total, 5MB per-entry cap) evicts oldest entries when full. Binary responses stored as base64, text as-is. This lets agents tap Instagram's GraphQL API, TikTok's hydration data, and any SPA's internal API responses instead of fragile DOM scraping. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: add screenshot --base64 for inline image return Returns data:image/png;base64,... instead of writing to disk. Cap at 10MB. Works with all screenshot modes (element, clip, viewport). Eliminates the two-step screenshot+file-serve dance for remote agents. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * test: add data platform tests and media fixture Tests for SizeCappedBuffer (eviction, export, summary), validateTempPath (TEMP_DIR only, rejects cwd), command registration (all new commands in correct scope sets), and MIME mapping source checks. Rich HTML fixture with: standard images, lazy-loaded images, srcset, video with sources + HLS, audio, CSS background-images, JSON-LD, Open Graph, Twitter Cards, and meta tags. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * docs: regenerate SKILL.md with Extraction category Add Extraction category to browse command table ordering. Regenerate SKILL.md files to include media, data, download, scrape, archive commands in the generated documentation. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * chore: bump version and changelog (v0.16.0.0) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-08 00:41:55 -07:00