Promote the 2026-08-30 review security fixes and supplies ordering to main
This commit is contained in:
@@ -7,6 +7,7 @@ These routes are the human-facing read surface, gated by user JWT + RBAC.
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"""
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import hashlib
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import hmac
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import json
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import os
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import time
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@@ -941,6 +942,43 @@ _CLAIM_HOLD_SECONDS = 25
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_CLAIM_POLL_INTERVAL = 1.0
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def _pin_holds(command, descriptor):
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"""Does the descriptor still carry the digest this command was queued for?
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True when nothing was pinned (actions that deliver no content), or when the
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descriptor is missing entirely - a vanished script or version already sends
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the command through with no descriptor so the agent fails closed, and that
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path is not a content swap.
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"""
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if not command.pinnedsha256:
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return True
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if descriptor is None:
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return True
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return hmac.compare_digest(
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str(descriptor.get('sha256') or ''), command.pinnedsha256)
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def _fail_on_pin_drift(command, action):
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"""Refuse a claim whose content changed after the operator approved it."""
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command.status = EndpointCommand.STATUS_FAILED
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command.resultmessage = (
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'Refused: the {} content changed after this command was queued'
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.format(action))
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command.completedat = _naive_utcnow()
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db.session.commit()
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current_app.logger.warning(
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'Endpoint command %s (%s, asset %s) refused: pinned sha256 %s no '
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'longer matches the resolved descriptor',
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command.endpointcommandid, action, command.assetid,
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command.pinnedsha256)
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AuditLog.log('refused', 'EndpointCommand',
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entityid=command.endpointcommandid,
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entityname=action,
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details='content digest changed after enqueue')
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db.session.commit()
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return ('', 204)
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def _reap_stale_commands(asset_id):
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"""Expire in-flight commands an agent will never finish for this endpoint.
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@@ -1234,18 +1272,25 @@ def enqueue_endpoint_command(asset_id: int):
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# update_app pins a specific application version; verify it resolves to a
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# real installer now so a broken push is rejected at enqueue rather than
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# failing opaquely on the endpoint minutes later.
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# Digest of the content this push was APPROVED against. Kept on the row so
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# the claim path can refuse a descriptor that has changed since; see
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# EndpointCommand.pinnedsha256.
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pinnedsha256 = None
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if action == 'update_app':
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_descriptor, resolve_error = _resolve_update_app(target)
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descriptor, resolve_error = _resolve_update_app(target)
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if resolve_error is not None:
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return error_response(ErrorCodes.VALIDATION_ERROR, resolve_error)
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pinnedsha256 = (descriptor or {}).get('sha256')
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# run_script pins a ShopDB-hosted script; verify it resolves to a real
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# uploaded body now so a broken push is rejected at enqueue rather than
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# failing opaquely on the endpoint later.
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if action == 'run_script':
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_script, script_error = _resolve_run_script(target)
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script, script_error = _resolve_run_script(target)
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if script_error is not None:
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return error_response(ErrorCodes.VALIDATION_ERROR, script_error)
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pinnedsha256 = (script or {}).get('sha256')
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state = EndpointState.query.filter_by(assetid=asset_id).first()
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if state is None:
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@@ -1277,6 +1322,7 @@ def enqueue_endpoint_command(asset_id: int):
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targetkind=targetkind if target else None,
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status=EndpointCommand.STATUS_PENDING,
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requestedby=getattr(current_user, 'userid', None),
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pinnedsha256=pinnedsha256,
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)
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db.session.add(command)
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@@ -1337,6 +1383,8 @@ def claim_next_command():
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# fail closed rather than 500 the poll.
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if command.action == 'update_app':
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descriptor, _resolve_error = _resolve_update_app(command.target)
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if not _pin_holds(command, descriptor):
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return _fail_on_pin_drift(command, 'update_app')
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if descriptor is not None:
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claim['app'] = descriptor
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# run_script rides a resolved script descriptor: the agent gets a
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@@ -1347,6 +1395,8 @@ def claim_next_command():
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# agent fail closed rather than 500 the poll.
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if command.action == 'run_script':
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script_descriptor, _script_error = _resolve_run_script(command.target)
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if not _pin_holds(command, script_descriptor):
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return _fail_on_pin_drift(command, 'run_script')
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if script_descriptor is not None:
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claim['script'] = script_descriptor
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return success_response(claim)
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@@ -1376,6 +1426,33 @@ def report_command_result(command_id: int):
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return error_response(ErrorCodes.NOT_FOUND,
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f'No command {command_id}', http_code=404)
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# An agent may only finalize ITS OWN command. The collector key is shared
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# fleet-wide, so without this any agent could post a result for any command
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# id - marking an install succeeded on a machine that never ran it, which
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# writes a false compliance record. Binding to the claimed hostname is a
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# floor, not a fix: the credential still does not prove which endpoint is
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# calling, and only a per-endpoint credential closes that.
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# Optional because the shipped agent does not send it yet; enforced when it
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# does, so an updated fleet gets the check without a flag day.
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hostname = (request.args.get('hostname') or '').strip()
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if hostname:
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caller_asset_id = _resolve_asset_for_hostname(hostname)
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if caller_asset_id != command.assetid:
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return error_response(
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ErrorCodes.FORBIDDEN,
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'This command belongs to another endpoint', http_code=403)
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# Only a claimed command can be finalized. Needs no agent change, and it
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# closes two things the hostname check cannot: reporting on a command that
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# was never claimed, and overwriting a terminal result - which would let a
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# recorded failure be replaced by a success.
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if command.status != EndpointCommand.STATUS_RUNNING:
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return error_response(
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ErrorCodes.VALIDATION_ERROR,
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'Command {} is {}, not running'.format(
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command_id, command.status),
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http_code=409)
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payload = request.get_json(silent=True) or {}
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succeeded = bool(payload.get('succeeded'))
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command.status = (EndpointCommand.STATUS_SUCCEEDED if succeeded
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