Per-PC credentials (replaces the 09-14 client-certificate attempt):
- POST /api/endpoints/enroll issues a credential to a PC that matches exactly
one computer by hostname and BIOS serial and has none yet. Anything else
(unknown or duplicate hostname, serial mismatch, already enrolled) waits as
a request an admin approves or rejects. The agent's persisted nonce binds an
approved request to the PC that asked.
- One auth helper serves every agent route. With X-Endpoint-Credential the
asset comes from the credential and a request naming another PC gets 403
ASSET_MISMATCH. The shared key still works for PCs that have not enrolled,
is refused (401 SHARED_KEY_REFUSED) for any PC that has, and can be switched
off. A revoked credential gets 401 CREDENTIAL_INVALID so the agent
re-enrolls.
- The core collector accepts the credential for the computers, printers and
endpoints collectors through two new plugin hooks exposed on shopdb.api
(contract 0.33.0), and refuses the shared key for enrolled PCs.
- Admin API: enrollment list, approve, reject, revoke (un-enroll), settings.
Migration API: per-PC readiness with blockers, and upgrade waves that
package the agent once and queue the existing agent upgrade per PC.
- Migration 0023 creates endpointcredentials, endpointenrollrequests and
endpointmigrationwaves, drops the certificate columns from assets where
test databases have them, and renames app_fingerprint to appfingerprint.
0021 and 0022 keep their ids but no longer alter the core assets table.
- Removed: client_cert.py, certificate renewal, the unauthenticated
/test/client-cert route, nginx client certificate forwarding and the agent
certificate script. The client-cert header could be forged on IIS, the key
was readable by users, and the shared key remained a fallback.
- GET /settings/server-cert returns the SPKI SHA-256 pin for GE-Enforce.
Review fixes:
- report_command_result used g without importing it; every result was a 500.
- collect_log refuses setup answer files, appsettings, agent directories and
key files at enqueue.
- Fleet alerts: alerttimeout and alertfleet agree with the migration, the
scope is validated and a malformed scope no longer reaches the whole fleet,
and the ack race no longer raises NameError.
- A refused break-glass override leaves no hold and no audit row.
- Agent upgrade checks locks and permissions before repackaging, and writes
the package atomically.
- Server certificate upload validates the pair before replacing files;
generation no longer builds an openssl config from user input; audit rows
are actually written.
- Health evaluation runs in a savepoint so a caught error cannot lose the
check-in.
- Required-app policies are found by appid, survive renames, and deleting an
app deactivates policies that still name it. The UI and API now say such a
policy only takes effect inside a business policy.
- Backfill handles duplicate fingerprints and rolls back a failed batch.
- Plugin settings routes skip a plugin whose hook raises.
- The setup token is no longer printed to the log.
- The naming gate checks top-level files again and handles odd file names.
- Removed root scratch scripts, one of which carried a token.
- Rewrote the fleet alert scheduling and app delta tests on real fixtures.
Addresses all critical and high-severity findings from Fable security review.
CRITICAL FIX#1: Server Certificate Validation Bypass
- File: CertificateRenewal.cs
- Issue: Agent accepted ANY server certificate when ServerCertThumbprint not configured
- Fix: Now validates against Windows trusted roots when pinning not configured
- Impact: Prevents MITM attacks during renewal requests
CRITICAL FIX#2: Certificate Revocation Check Incomplete
- Files: asset.py, client_cert.py, migration 0022
- Issue: Revocation check used hasattr() and silently skipped when columns missing
- Fix: Applied migration 0022, uncommented revocation columns, removed hasattr()
- Impact: Revoked certificates can no longer authenticate or renew
CRITICAL FIX#3: Expired Certificates Cannot Renew
- Files: routes.py (renewal endpoint), CertificateRenewal.cs
- Issue: Expired certs fail at TLS handshake before reaching renewal endpoint
- Fix: Added API key + hostname fallback for renewal when cert expired
- Agent now sends hostname in request body for API key authentication
- Impact: Agents can renew expired certificates, 30-day window becomes effective
HIGH FIX#4: Hostname Injection Vulnerability
- File: routes.py
- Issue: No validation before passing hostname to certificate generation
- Fix: Added regex validation - 1-64 chars, alphanumeric plus dot/hyphen/underscore
- Impact: Prevents injection attacks via malicious hostnames
HIGH FIX#5: Rate Limit Bypass via Clock Manipulation
- File: routes.py
- Issue: Naive UTC datetime arithmetic vulnerable to timezone changes
- Fix: Use timezone-aware datetime with explicit UTC conversion
- Impact: Rate limit cannot be bypassed via clock manipulation
HIGH FIX#6: Hard Process Termination Loses In-Flight Work
- File: Program.cs
- Issue: Environment.Exit(0) aborted in-flight work and could corrupt state
- Fix: Graceful return from RunHostAsync() instead of Environment.Exit()
- Impact: Service exits cleanly, no lost telemetry or corrupted local state
HIGH FIX#7: Missing Database Transaction Isolation
- File: routes.py
- Issue: Race condition in concurrent renewal requests
- Fix: Added with_for_update() row-level locking for both auth paths
- Impact: Prevents concurrent renewals from bypassing rate limit
MEDIUM FIX#8: Missing Audit Logging for Failures
- File: routes.py
- Issue: Failed renewal attempts not captured in audit trail
- Fix: Added AuditLog.log() for cert generation and database update failures
- Impact: Security monitoring can detect repeated renewal failures
SECURITY HARDENING:
- Server cert validation: Never accepts certificates blindly
- Revocation enforcement: Fail closed if columns missing
- Expired cert handling: Dual-auth allows renewal while maintaining security
- Input validation: Hostname must match safe character set
- Transaction safety: Row locks prevent race conditions
- Audit trail: All failures logged for security monitoring
OPERATIONAL IMPROVEMENTS:
- Agents can now renew expired certificates (no more manual intervention)
- Graceful shutdown prevents data loss during renewal
- Rate limiting immune to timezone issues
- Comprehensive audit trail for troubleshooting
ADR COMPLIANCE:
- Maintains ADR-001 (Asset as platform contract)
- Maintains ADR-006 (Collector contract - backward compatible)
- Database naming (snake_case columns)
- No unicode/emojis
- Security best practices: ALL CRITICAL/HIGH issues resolved
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Log Collector: a new collect_log action reads a plaintext log file from a
known path and returns its tail for viewing and download. Rides the existing
endpoints.updateapp grant rather than inventing one, since collecting a log is
the same trust level as pushing an application. Collected logs land in their
own table with per-asset retention of 20 instead of overloading the command
audit row, and the agent refuses UNC, traversal, wildcards, directories and
non-text content independently of the server check.
collect_log is POLICY_EXEMPT. Every existing Configuration Policy predates the
action and so cannot name it, and the intersection in ALLOWED_ACTIONS_FOR drops
anything unnamed - so every policied endpoint refused log collection outright,
including for admins, who saw a permission-shaped error for a grant they held.
Exemption from policy is not exemption from permission: the elevated grant
still applies, and a regression test asserts both halves so a future edit
cannot quietly loosen the grant while "fixing" the policy gate.
Script output capture: successful runs can return output, gated per script by
captureoutput. Failures always returned it; success never did, which left a
green badge as the only evidence a run produced.
Timestamps: Activity and Operator Reports rendered date-only because the shared
formatter's 'date' branch drops the clock time. Run Scripts additionally
labels its timestamp, since a bare time meant "completed" on a terminal row but
"queued" on an in-flight one - indistinguishable, and the wrong reading.
Agent 1.16.0. Minor: collect_log is a new action name, so an older agent asked
for it fails closed on the unknown-action default.
Endpoint locks
--------------
Adds EndpointLock so an admin can hold an endpoint against automated and
operator action, with migration 0018 and enforcement in the enqueue path
rather than only in the UI, so a lock cannot be bypassed by calling the
API directly.
Split endpoints.deploy
----------------------
endpoints.deploy bundled three actions of very different risk behind a
single name:
scheduledtask_run -> starts a task already registered and allowlisted
update_app -> runs a pinned installer
run_script -> arbitrary code as SYSTEM unless the descriptor
pins a user context
Because they shared one grant there was no way to let an operator push an
application update without also handing them arbitrary SYSTEM code
execution on every endpoint they could reach. The permission name
described the lightest of the three while silently carrying the heaviest.
commands.ELEVATED_ACTION_PERMISSIONS now maps each action to its own
permission (endpoints.corptools, endpoints.updateapp,
endpoints.runscript). The enqueue route reads that table, so no route
logic changed. Migration 7d42 preserves existing access exactly: anyone
holding endpoints.deploy receives all three replacements.
Corporate Tools tab on PC Details, gated by endpoints.deploy and liveness.
Starts already-registered scheduled tasks; the agent's ScheduledTaskPolicy
allowlist remains the authority on what may actually run.
Dell Command | Update split into two actions (Scan, Apply Updates) because
they have very different consequences. Apply Updates carries a persistent
breakglass warning in the card naming Tanium as the primary update utility,
rendered between the row title and description so it is visible at all times
rather than only in the confirm dialog. Destructive actions keep the typed
RUN confirmation.
Fix scheduledtask_run being stripped by Configuration Policy: the
intersection in ALLOWED_ACTIONS_FOR dropped it on any endpoint whose
effective policy was non-empty, so every Corporate Tools click failed with
"not permitted by policy" regardless of the caller's role. Corporate tools
are role-gated only, via POLICY_EXEMPT_ACTIONS; policy keeps authority over
monitors and service/process primitives.
Fix blank PC Details page: watch(detailtabs) evaluates its source during
setup and read canDeploy before its const declaration, throwing a TDZ
ReferenceError that aborted setup with no API request made.
Mapped-drive refresh moves to the tray. SYSTEM cannot probe user-scoped
drives, so the service requests a re-probe over a named event and waits for
the spool collectedat stamp to advance before collecting. The probe task is
registered as a ShopFloor user principal; the Users-group principal remains
only as a degraded fallback since a group member cannot start it.
Adds rebootreasonsjson, bootinfojson and defenderjson with their migration in the same change, so the model never references a column the schema has not applied.
rebootreasons is not redundant with the existing pendingreboot column. That column is a single bool OR-ed from three registry signals and cannot say which fired, and the difference matters: a staged file rename means the box is mid-servicing, while a lone servicing key can sit set for weeks on a machine nobody rebooted.
Null means never reported and is deliberately distinct from an empty list, which means checked and nothing pending. Backfilling [] would assert every pre-existing endpoint was confirmed clean.
Adds diskhealthjson with its migration in the same change, so the model never references a column the schema has not applied.
Kept separate from disksjson rather than merged into it. That column is per volume and answers how full a drive is; this one is per physical device and answers whether the hardware is dying. They come from different WMI sources with different failure modes, so merging them would make a capacity collection failure indistinguishable from a health collection failure.
Nullable with no backfill: a drive whose health has never been reported is not a healthy drive, and defaulting to an empty list would read as no disks have problems on every endpoint predating the column.
Curated events were re-read from the newest 25 entries per channel on every
collect, and the server appended whatever arrived. One real event was
therefore stored again on every cadence tick for as long as it stayed in
that window, so event counts measured how long a box had been up rather
than what had happened to it.
The agent now keeps a per-channel watermark of the last Windows event
record id it reported, persisted under ProgramData so a service restart
does not replay history, and sends eventrecordid with each event. The
server dedupes on (assetid, eventchannel, eventrecordid) behind a unique
index, so a replay from an older agent cannot double-store either.
Six inventory keys the agent had been sending all along - bios, disks,
domain, memory, osinfo, processor - were parsed, logged as unpersisted,
and dropped. They now have columns and are written on check-in, along
with user context, pending reboot, and the cpupercent/memorypercent/
idleseconds fields that were declared in the contract but always null.
Session-scoped data cannot be read from the agent's LocalSystem session 0
at all: mapped drives and user-owned listeners do not exist there. A probe
runs in the interactive user's session and hands results back through a
spool file. It is not yet producing output on a live endpoint; the column
and panel are in place and read empty until that is fixed.
Also bounds the user-context script wait. It was WaitForSingleObject with
INFINITE, so a hung script pinned the command worker permanently.
The agent already reported agentversion but the interactive tray app, which ships and updates independently, had no reported version. The agent now reads the tray exe file version and reports it as trayversion; EndpointState caches it (migration 0011) and the Fleet card surfaces it beside Agent. The tray csproj gains an explicit Version so the file version is stamped. Groundwork for per-PC version surfacing and push-update targeting.
Operators need to see when a machine's running services or processes fall outside the desired state defined by policy. This adds a reusable monitor catalog (shipped read-only rows plus user-built local rows), computes drift server-side on agent check-in, and surfaces a warning on the endpoint panels. Remediation stays manual for now; automation can follow once demand is proven. Includes migrations 0006-0008 and the monitors API client.
Ben Baker's installed-software collection, software delivery (run_script and
update_app), agentless adoption tool and command-queue hardening, with his
authorship preserved.
Reviewed before promotion. Fixed: the endpoints plugin tests were never collected
by pytest, the SBOM snapshot table's key would exhaust on MySQL, ingest did not
truncate two columns strict MySQL would reject, and update_app's version branch
pinned a digest for a file that route never serves. Agent packaging moved off
require_role('admin') onto a new endpoints.agentpackage permission.
Contract 0.27.0. Full suite 2231, frontend 314.
Default fuzzy reconcile threshold to 0 and refuse merges when digit runs differ so numbered labels like Bay 311 never bind to Bay 310. Keep edit forms from clearing saved model fields when category filtering hides untyped rows. Includes in-progress computers policy and endpoints command feature work.
Migration tests knew no endpoints head revision, so the parametrized guards raised KeyError. Register it in EXPECTED_HEAD_REVISION.
EndpointState declared lastreportedat both index=True and an explicit db.Index over the same column, and the baseline migration named single-column indexes differently from what create_all builds. On a pre-existing table the name-keyed guard could not see the create_all index and added a duplicate, tripping the idempotency guard. Drop the redundant declaration and rename migration indexes to ix_<table>_<column> to match.
endpoints was absent from the universal site profile, so the installer would not offer it and prune-schema would drop its tables at provisioning. Add it.
The agent design record lived under docs/, which is stripped to the public wiki and normally absent from the tree; a lone file there un-skipped the wiki-publish guards. Move it into the plugin.
Server-side RMM telemetry plugin: current-snapshot endpointstates plus append-only curated endpointevents, resolved to existing Computer assets by hostname. Adds ADR-010 asset panels (status, services, recent events), dashboard quiet and stability cards, and a minimal Fleet list view that links into existing PC detail pages. Registers the activity sidebar icon and a dev-only sample seeder. Ingest arrives on the generic collector route; the future C# agent design record lives in docs/DESIGN-DECISIONS-agent.md.
