Follow-up to the RCE/missing-auth/SSRF remediation, from a thorough multi-lens
review (3 agents + a black-box audit of all 201 routes). Backend-only; no
agent-script changes.
Regression fix (introduced by the previous commit):
- GET /api/agents was made JWT-only, but deployed agents call it WITH X-API-Key
(not a JWT) to read their applied_config_version and avoid re-applying config on
restart. It now accepts EITHER a valid operator JWT OR a valid agent X-API-Key,
so agents no longer get 401 (which caused a spurious HAProxy reload every restart).
Completeness (GHSA-3p5c siblings the first pass missed — same data class, now JWT):
- dashboard.py: GET /api/haproxy-cluster-pools/{id}/agents (full agent inventory —
a direct anonymous bypass of the GET /api/agents lockdown), /api/pools,
/api/haproxy-cluster-pools, /api/dashboard/stats, /api/dashboard/overview
(auth was optional -> leaked stats/names/health/alerts anonymously),
/api/haproxy/stats.
- waf.py: GET /api/waf/rules. health.py: GET /api/health/errors.
- agent.py: GET /api/agents/generate-uninstall-script/{platform} (agent-management
endpoint; was anonymous) now requires JWT or agent key, like generate-install-script.
- config.py: POST /api/config/{validate,optimize,templates/{id}/generate} were
optional-auth (logging only) and run a HAProxy validator on caller input; now
require a JWT. (bulk-create, parse-bulk, diff and configuration/request were
already mandatory-auth — verified.)
All newly-gated endpoints are frontend-only (axios sends the JWT) or unused;
agents never call them.
SSRF (GHSA-3vh4) gap:
- acme_service._get_nonce fetched directory['newNonce'] (from the attacker-
influenceable directory JSON) with a bare session, http allowed, dual-stack, and
BEFORE the guarded _signed_request POST. Now guarded (assert_public_url +
safe_connector + no redirects + timeout), matching the other ACME sinks.
Correctness:
- Three agent webhooks (config-applied, config-validation-failed, config-sync)
swallowed their auth 401 into a 200 error body via a bare `except Exception`.
Added `except HTTPException: raise` so the 401/403 propagates.
Audit result (live black-box, all 201 routes probed unauthenticated): no data
leak and no unauthenticated mutation anywhere; every sensitive route returns
401/403 (a pre-existing group of read handlers wraps the 401 into a 500 via a
broad except — no data is exposed; left as-is, documented as cosmetic).
Verified: full pytest tests/ (1145 passed, 0 failed; +16 regression tests) + live
localtest stack smoke — agent-key GET /api/agents=200, anonymous=401, all newly
gated endpoints reject anonymous and admit JWT, the 3 webhooks return 401.
Addresses three reported advisories, all verified against the code. Fixes are
entirely server-side — deployed agents already send a valid X-API-Key on every
call, so enforcing it does not require any agent-script change or upgrade.
GHSA-7rhv-c5pc-69r8 (CRITICAL RCE — agent script-template poisoning):
- POST/GET /api/agents/script-templates/{platform} now require the agents.version
permission (was authentication-only), matching POST /versions. Blocks a viewer
JWT from overwriting the root install/upgrade script.
GHSA-3p5c-m5m4-mjpx (missing authentication):
- Agent data-plane endpoints now REQUIRE a valid X-API-Key (was optional/skipped
when the header was absent), checked before any DB access: config,
ssl-certificates (private keys!), upgrade-status, heartbeat (by-name and the
previously auth-less by-id), configuration pending-requests. Removes keyless
heartbeat spoofing and keyless rogue-agent auto-registration.
- Operator/UI endpoints now require a JWT: GET /api/agents, the entire
/api/dashboard-stats router, /api/health/{deep,agents,clusters}, and
/api/ssl/certificates/{id}/config-versions. The simple /api/health liveness
probe stays public. Adds shared auth_middleware.require_authenticated_user.
GHSA-3vh4-gvxx-wm2p (SSRF via ACME directory_url):
- New utils/ssrf_guard.py (https-only + public-IP-only, IPv4-pinned, no redirects),
applied to settings test-connection, acme_service.get_directory and
_signed_request, and validated at Let's Encrypt account creation. The
test-connection response no longer reflects arbitrary upstream JSON keys
(information-disclosure oracle) — only fixed ACME field names.
Verified: full pytest tests/ (1128 passed, 0 failed) + live localtest stack smoke
(valid JWT/key paths return 200/404 as expected; anonymous requests 401; SSRF to
metadata/private/loopback refused). No changes to backend/utils/agent_scripts/*.
taylanbakircioglu