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Shankar
25131a377d
Closes CWE-306 (missing authentication for critical function) for SCEP
via a fail-loud startup gate, and aligns EST/SCEP HTTP dispatch with
their respective RFCs. CRL/OCSP remain unauthenticated under
.well-known/pki/* per RFC 5280 §5 / RFC 6960 / RFC 8615. Option (D):
no mTLS in this milestone.
- RFC 7030 §3.2.3 (EST auth is deployment-specific) and §4.1.1
(/cacerts explicitly anonymous): EST paths served unauthenticated;
CSR-signature + profile policy enforce identity inside ESTService.
- RFC 8894 §3.2: SCEP authenticates via the challengePassword
PKCS#10 attribute (OID 1.2.840.113549.1.9.7), not an HTTP credential.
HTTP dispatch is unauthenticated; preflightSCEPChallengePassword
refuses to start when CERTCTL_SCEP_ENABLED=true without
CERTCTL_SCEP_CHALLENGE_PASSWORD. SCEPService.PKCSReq enforces the
same invariant defense-in-depth and compares with
crypto/subtle.ConstantTimeCompare.
cmd/server/main.go:
- Extract buildFinalHandler(apiHandler, noAuthHandler, webDir,
dashboardEnabled); route /.well-known/est/*, /scep, /scep/*,
/.well-known/pki/crl/{id}, /.well-known/pki/ocsp/{id}/{serial},
and health probes through noAuthHandler (RequestID +
structuredLogger + Recovery only).
- Add preflightSCEPChallengePassword fail-loud gate; startup log
emits challenge_password_set boolean for operator visibility.
cmd/server/finalhandler_test.go (new, 314 lines, 27 subtests):
- TestBuildFinalHandler_Dispatch (20) + TestBuildFinalHandler_NoDashboard
(7) pin the dispatch surface: EST 4-endpoint, SCEP exact +
trailing-slash + query-string, PKI CRL+OCSP, health, /api/v1/*
authenticated, /assets/* file server, SPA fallback.
internal/api/router/router.go, internal/config/config.go:
- Router-level comments explain why EST/SCEP/PKI dispatchers sit
outside the authenticated mux; SCEP challenge password config
plumbed through.
docs/architecture.md:
- New EST Authentication subsection (RFC 7030 §3.2.3 + §4.1.1,
buildFinalHandler + noAuthHandler references).
- Rewrite SCEP Authentication subsection; replaces pre-existing
factually-incorrect "any value accepted" claim with CWE-306
preflight, service-layer defense-in-depth, and
crypto/subtle.ConstantTimeCompare.
- Top-level Authentication section: qualify /api/v1/* scope on API
clients bullet; add standards-based-endpoints bullet referencing
the 27-subtest regression harness.
docs/compliance-soc2.md:
- CC6.1: scope API Key Authentication to /api/v1/*; add
standards-based endpoints bullet citing RFCs and CWE-306 closure.
- CC6.3: scope API Key Policy to /api/v1/* with cross-reference to
CC6.1.
- Evidence Locations augmented with buildFinalHandler,
preflightSCEPChallengePassword, scep.go defense path, regression
harness, and OpenAPI security:[] overrides.
api/openapi.yaml: verified already correct (global bearerAuth
default overridden with security:[] on /cacerts, /simpleenroll,
/simplereenroll, /csrattrs, /scep GET+POST, /crl/{issuer_id},
/ocsp/{issuer_id}/{serial}); no edits needed.