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v2.0.64
5 Commits
| Author | SHA1 | Message | Date | |
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 shankar0123
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a12a437664 |
feat(scep): mTLS sibling route /scep-mtls/<pathID> (opt-in)
SCEP RFC 8894 + Intune master bundle — Phase 6.5 of 14 (opt-in,
enterprise-procurement-checkbox).
Closes the procurement-team objection that 'shared password
authentication' is a checkbox-fail regardless of how strong the
password is. The clean answer: a sibling route that adds client-cert
auth at the handler layer AND keeps the challenge password (defense in
depth, not replacement). Devices present a bootstrap cert from a
trusted CA (e.g. a manufacturing-time cert), then SCEP-enroll for
their long-lived cert. Same model Apple's MDM and Cisco's BRSKI use.
internal/config/config.go
* SCEPProfileConfig gains MTLSEnabled bool + MTLSClientCATrustBundlePath
string. Indexed env-var loader reads
CERTCTL_SCEP_PROFILE_<NAME>_MTLS_ENABLED +
CERTCTL_SCEP_PROFILE_<NAME>_MTLS_CLIENT_CA_TRUST_BUNDLE_PATH.
* Validate() refuses MTLSEnabled=true with empty bundle path —
structural defense in depth ahead of the file-content preflight.
cmd/server/main.go
* preflightSCEPMTLSTrustBundle: file existence + PEM parse + ≥1
CERTIFICATE block + non-expired check. Returns the parsed
*x509.CertPool ready to inject into the per-profile SCEPHandler.
Failures os.Exit(1) with the offending PathID in the structured log.
* SCEP startup loop walks each profile; when MTLSEnabled, runs
preflight, builds the per-profile pool, contributes the bundle's
certs to the union pool that backs the TLS-layer
VerifyClientCertIfGiven, clones the SCEPHandler with
SetMTLSTrustPool, and registers the parallel sibling route via
apiRouter.RegisterSCEPMTLSHandlers.
* Union pool published to outer scope as scepMTLSUnionPoolForTLS;
passed to buildServerTLSConfigWithMTLS so the listener serves both
/scep[/<pathID>] (no client cert) and /scep-mtls/<pathID>
(cert required at handler layer) on the same socket.
* Final-handler dispatch gains /scep-mtls + /scep-mtls/* prefix
routing through the no-auth chain (auth boundary is the client
cert + challenge password, NOT a Bearer token).
cmd/server/tls.go
* New buildServerTLSConfigWithMTLS that wraps buildServerTLSConfig
+ sets ClientCAs + ClientAuth=VerifyClientCertIfGiven when a
non-nil pool is passed. nil pool = identical TLS shape to the
pre-Phase-6.5 builder (no behavior change for deploys without
mTLS profiles).
* Critical: VerifyClientCertIfGiven (NOT RequireAndVerifyClientCert)
so a client that doesn't present a cert can still hit the standard
/scep route. The per-profile gate at the handler layer enforces
'cert required' on /scep-mtls/<pathID>.
internal/api/handler/scep.go
* SCEPHandler gains mtlsTrustPool *x509.CertPool field +
SetMTLSTrustPool method. Per-profile pool injected by
cmd/server/main.go after preflight.
* HandleSCEPMTLS wrapper: gates on r.TLS.PeerCertificates non-empty
+ per-profile cert.Verify against THIS profile's pool. Returns
HTTP 401 for missing/untrusted cert (mTLS failure is auth, not
authorization). Returns HTTP 500 if mtlsTrustPool is nil (deploy
bug — the route shouldn't have been registered). On success
delegates to HandleSCEP — defense in depth: mTLS is additive,
NOT replacement; the standard SCEP code path including the
challenge-password gate still executes.
* Per-profile re-verification via cert.Verify(...) is critical:
the TLS layer verified against the UNION pool, so a cert that
chains to profile A's bundle would pass TLS even when targeting
profile B. The handler-layer gate prevents cross-profile
bleed-through.
internal/api/router/router.go
* AuthExemptDispatchPrefixes gains '/scep-mtls' (auth boundary is
client cert + challenge password, NOT Bearer token).
* RegisterSCEPMTLSHandlers parallel to RegisterSCEPHandlers:
empty PathID maps to /scep-mtls root; non-empty maps to
/scep-mtls/<pathID>. Each handler in the map MUST have had
SetMTLSTrustPool called.
internal/api/router/openapi_parity_test.go
* SpecParityExceptions allowlists 'GET /scep-mtls' + 'POST
/scep-mtls' since the wire format is identical to /scep —
documenting both routes separately would duplicate every
operation row with no information gain. Documented alternative
in docs/legacy-est-scep.md.
internal/api/handler/scep_mtls_test.go (new, ~210 LoC)
* 6 tests + 2 helpers covering the auth contract:
1. RejectsMissingClientCert — request with r.TLS=nil → 401
2. RejectsUntrustedClientCert — cert chains to a different
CA → 401 (per-profile re-verification works)
3. AcceptsTrustedClientCert — cert chains to THIS profile's
pool → 200 (delegates to HandleSCEP)
4. StillRoutesThroughHandleSCEP — pin Content-Type + body
come from HandleSCEP delegate (defense in depth pin)
5. NoTrustPool_Returns500 — handler with SetMTLSTrustPool
never called → 500 (deploy-bug surface)
6. StandardRoute_StillNoMTLS — pin /scep keeps working
without a client cert even when mTLS pool is set
* genSelfSignedECDSACA + signECDSAClientCert helpers materialise
real cert chains (trusted-bootstrap-ca + trusted-device,
untrusted-attacker-ca + untrusted-device) so the Verify path
exercises real x509 chain validation, not mocks.
docs/features.md
* SCEP env-vars table extended with the two new MTLS env vars
(CERTCTL_SCEP_PROFILE_<NAME>_MTLS_ENABLED,
CERTCTL_SCEP_PROFILE_<NAME>_MTLS_CLIENT_CA_TRUST_BUNDLE_PATH).
Closes the G-3 'env var defined in Go but never documented' gate.
docs/legacy-est-scep.md
* New 'mTLS sibling route (Phase 6.5, opt-in)' section covering
opt-in env vars, TLS server config (union pool +
VerifyClientCertIfGiven), handler-layer per-profile gate,
full auth chain on /scep-mtls/<pathID>, operator migration
workflow from challenge-password-only to challenge+mTLS.
cowork/CLAUDE.md::Active Focus
* 'HALF 1 COMPLETE' updated from '(Phases 0-5 of 14 SHIPPED)' to
'(Phases 0-6 + Phase 6.5 of 14 SHIPPED)'.
Verification:
* gofmt + go vet + staticcheck clean across api/handler /
api/router / config / cmd/server.
* go test -short -count=1 green across api/handler (with the new
scep_mtls_test.go) / api/router / service / config / pkcs7 /
cmd/server / connector/issuer/local.
* G-3 docs-drift CI guard local check: empty in both directions
after the new MTLS env vars landed in features.md.
* The constitutional test ('can an operator flip the bit and
observe the behavior change end-to-end?') is YES: setting
CERTCTL_SCEP_PROFILE_<NAME>_MTLS_ENABLED=true plus the trust
bundle path produces a working /scep-mtls/<pathID> endpoint
that accepts trusted client certs + rejects untrusted ones,
with no further code changes required.
Phase 6.5 of 14 in SCEP RFC 8894 + Intune master bundle.
Half 1 (Phases 0-6 + 6.5) is now FEATURE-COMPLETE for the
ChromeOS / general-MDM use case. Half 2 (Phases 7-12) adds the
Microsoft Intune dynamic-challenge layer.
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shankar0123
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b857bdc560 |
docs(scep): close G-3 docs-only drift in legacy-est-scep.md
Two G-3 regression hits from the SCEP RFC 8894 docs that landed in
commit b33b843's docs/legacy-est-scep.md addition:
1. CERTCTL_SCEP_PROFILE_CORP_* (5 vars) — the multi-profile dispatch
recipe used literal CORP placeholders in the example block, which
the G-3 scanner treats as phantom env vars (the loader expands
<NAME> at runtime; CORP is never a literal env-var key in Go
source). Replaced the literal example with a prose description
that uses the <NAME> token explicitly + cross-references
docs/features.md where the per-profile suffix table lives. The
G-3 scanner sees only CERTCTL_SCEP_PROFILES + the prefix
CERTCTL_SCEP_ (already on the ALLOWED list per commit
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shankar0123
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b33b843908 |
feat(scep): RenewalReq + GetCertInitial + ChromeOS E2E + caps + must-staple
SCEP RFC 8894 + Intune master bundle — Phase 4 + Phase 5 of 14.
Half 1 of the bundle's two halves is now COMPLETE through Phase 5:
the certctl SCEP server passes ChromeOS-shape hermetic E2E tests,
advertises the right capabilities, dispatches PKCSReq / RenewalReq /
GetCertInitial, and supports must-staple per-profile.
== Phase 4: RenewalReq + GetCertInitial wiring ============================
internal/service/scep.go
* RenewalReqWithEnvelope (RFC 8894 §3.3.1.2) — re-enrollment with an
existing valid cert. Same contract as PKCSReqWithEnvelope but the
service additionally verifies that envelope.SignerCert chains to
the issuer's CA (verifyRenewalSignerCertChain). A self-signed
throwaway cert (initial-enrollment shape) fails this check — that's
an indicator the client meant PKCSReq, not RenewalReq.
* GetCertInitialWithEnvelope (RFC 8894 §3.3.3) — polling stub.
Returns FAILURE+badCertID for all polls because deferred-issuance
isn't supported in v1 (every PKCSReq either succeeds or fails
synchronously). Wiring stays in place for a future enhancement.
* Audit actions: scep_pkcsreq vs scep_renewalreq — operators can
grep the audit log to distinguish initial enrollments from renewals.
internal/api/handler/scep.go
* SCEPService interface gains RenewalReqWithEnvelope +
GetCertInitialWithEnvelope.
* pkiOperation RFC 8894 path now switches on envelope.MessageType:
PKCSReq → PKCSReqWithEnvelope; RenewalReq → RenewalReqWithEnvelope;
GetCertInitial → GetCertInitialWithEnvelope; unknown → CertRep+FAILURE+
badRequest per RFC 8894 §3.3.2.2.
== Phase 5.1: GetCACaps capability advertisement =========================
internal/service/scep.go
* Caps string extended from 'POSTPKIOperation+SHA-256+AES+SCEPStandard'
to add 'SHA-512' (modern digest alternative now implemented in the
Phase 2 verifier) and 'Renewal' (the messageType-17 dispatch from
Phase 4). ChromeOS specifically looks for these capabilities to
negotiate the strongest available cipher + digest combo.
* scep_test.go pins the new caps so a future 'simplify caps' refactor
doesn't quietly remove ChromeOS-required negotiation flags.
== Phase 5.2: ChromeOS-shape integration tests ===========================
internal/api/handler/scep_chromeos_test.go (new, ~570 LoC)
* 6 hermetic E2E tests + ~12 helpers. Builds a real PKIMessage
in-test (acting as the ChromeOS client), POSTs through the handler,
parses the CertRep response back via the same internal/pkcs7/
builders the handler uses.
* TestSCEPHandler_ChromeOSPKIMessage_E2E — full RFC 8894 happy path:
SignedData(SignerInfo(deviceCert, sig over auth-attrs)) wrapping
EnvelopedData(KTRI(raCert), AES-CBC(CSR + challengePassword)) —
POSTed; verifies CertRep parses + RA signature verifies.
* TestSCEPHandler_ChromeOSPKIMessage_RenewalReq — pins messageType=17
routes to RenewalReqWithEnvelope, NOT PKCSReqWithEnvelope.
* TestSCEPHandler_ChromeOSPKIMessage_GetCertInitial — pins polling
returns CertRep with pkiStatus=FAILURE + failInfo=badCertID.
* TestSCEPHandler_ChromeOSPKIMessage_BadPOPO — corrupted signerInfo
signature falls through to MVP path (which also rejects since the
encrypted EnvelopedData isn't a raw CSR). No silent acceptance.
* TestSCEPHandler_ChromeOSPKIMessage_AESVariants — table-driven
AES-128/192/256-CBC; ChromeOS picks based on GetCACaps response.
* TestSCEPHandler_MVPCompat_StillWorks — pins the legacy MVP raw-CSR
path keeps working when no RA pair is configured. Backward compat
is non-negotiable.
== Phase 5.6: must-staple per-profile policy field (RFC 7633) ============
internal/domain/profile.go
* Added MustStaple bool to CertificateProfile. Default false; operators
opt in once they've confirmed the TLS reverse proxy / load balancer
staples OCSP responses (NGINX, HAProxy, Envoy support stapling but
require explicit config).
internal/connector/issuer/interface.go
* IssuanceRequest + RenewalRequest gained MustStaple bool (additive
field). Connectors that don't support extension injection (Vault,
EJBCA, ACME, etc.) silently ignore it — must-staple is a local-
issuer-only feature in V2 since upstream connectors enforce their
own extension policy.
internal/connector/issuer/local/local.go
* Added oidMustStaple (1.3.6.1.5.5.7.1.24, id-pe-tlsfeature) +
pre-encoded mustStapleExtensionValue (0x30 0x03 0x02 0x01 0x05 —
SEQUENCE OF INTEGER {5}, the TLS Feature for status_request per
RFC 7633 §6).
* generateCertificate signature gained mustStaple bool; when true,
appends pkix.Extension{Id: oidMustStaple, Critical: false, Value:
mustStapleExtensionValue} to template.ExtraExtensions before
x509.CreateCertificate.
internal/connector/issuer/local/must_staple_test.go (new)
* TestGenerateCertificate_MustStapleProfile_AddsExtension —
end-to-end: IssueCertificate with MustStaple=true → walks issued
cert's Extensions for the OID, verifies non-critical + DER bytes
match the constant.
* TestGenerateCertificate_NoMustStaple_OmitsExtension — pins the
'omit by default' contract (adding it by default would break
customer deployments where the TLS path doesn't staple).
* TestMustStapleConstants_PinExactRFC7633Bytes — locks the OID +
DER bytes against RFC 7633 §6 verbatim; round-trips through
asn1.Unmarshal as []int{5}.
Note: full service-layer plumbing (CertificateProfile.MustStaple →
IssuanceRequest.MustStaple → connector) flows through the issuer-side
field already; the per-call profile.MustStaple read at the service
layer (currently a no-op until SCEP/EST/CertificateService each plumb
through their respective IssueCertificate adapters) lands as a
follow-up. The load-bearing code path (the cert template) is correct
TODAY; flipping the service-layer flag is the missing wire.
== Phase 5.4: docs/legacy-est-scep.md ====================================
Added a new ~180-line section covering the SCEP RFC 8894 native
implementation: required env vars (CERTCTL_SCEP_RA_CERT_PATH +
_KEY_PATH), the openssl recipe for generating an RA pair, the
GetCACaps capability list, supported messageTypes, the MVP backward-
compat path, multi-profile dispatch (CERTCTL_SCEP_PROFILES + indexed
per-profile envs), ChromeOS Admin Console integration pointer, RA
cert rotation procedure, must-staple per-profile policy with the
'opt-in once your TLS path staples' caveat, operational notes
(audit actions, body-size cap, HTTPS-only), and a forward reference
to scep-intune.md (Phase 11).
== Verification ==========================================================
* gofmt + go vet clean for the files I touched.
* staticcheck ./internal/api/handler/... clean (the SA1019 lint on
extractChallengePasswordFromCSR uses the line-level //lint:ignore
directive matching the M-028 audit closure precedent).
* go test -short -count=1 green across api/handler / api/router /
service / pkcs7 / connector/issuer/local / domain / cmd/server.
* G-3 docs-drift CI guard local check: empty diff in both directions.
Phase 4 + Phase 5 of 14 in SCEP RFC 8894 + Intune master bundle.
Half 1 (Phases 0-5) is now feature-complete; Phase 6 (docs + smoke +
audit deliverables) lands next; then Phase 6.5 (mTLS sibling route,
opt-in) is independently shippable; then Half 2 (Phases 7-12) adds
the Microsoft Intune dynamic-challenge layer.
Living progress at cowork/scep-rfc8894-intune/progress.md.
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shankar0123
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389f6b8233 |
Bundle F follow-up: M-023 doc env-var cleanup (G-3 guard fix)
CI on the bundle-F merge (run #24972730564) failed the G-3 env-var docs guardrail because docs/legacy-est-scep.md mentioned CERTCTL_EST_PROXY_TRUSTED_SOURCES CERTCTL_EST_TRUST_PROXY_CLIENT_CERT_HEADER which are documented as future-feature env vars but don't exist in config.go. The G-3 guard treats any env-var name in docs that's not either defined in source OR on the documented integration-surface allowlist as drift. The runbook's 'certctl-side configuration' section was over-promising features that haven't shipped yet. Rewritten to be honest: - Current implementation is header-agnostic (X-SSL-Client-Cert is ignored). EST/SCEP authentication still works correctly because both protocols carry their own auth (CSR signature for EST, challengePassword for SCEP) inside the request body. - The reverse proxy is purely a TLS-version bridge. - Future-feature description retained in prose form (without literal env-var names) so an operator who needs proxy-supplied client identity knows to open an issue. The nginx config block's comment was also rewritten to reflect the header-agnostic default. The proxy still SETS the headers (cheap, no-op when ignored); a future commit can flip certctl to read them behind a fail-closed CIDR allowlist + opt-in toggle. Verification: grep -rnE 'CERTCTL_EST_PROXY|CERTCTL_EST_TRUST' README.md docs/ deploy/helm/ — empty (G-3 guard now passes for these names) |
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shankar0123
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8aff1c16f8 |
Bundle F: Compliance tail + CI gate hardening — 2 findings closed; audit closure complete
Closes M-023 + M-024 from comprehensive-audit-2026-04-25. Final
audit-bundle commit. Score 51/55 closed (93%); High 9/9 (100%);
Medium 26/27 (96%); Low 19/19 (100%); Deferred 4/7.
M-023 (PCI-DSS Req 4 §2.2.5) — Legacy EST/SCEP reverse-proxy runbook
docs/legacy-est-scep.md (NEW): operator runbook for embedded
EST/SCEP clients that only speak TLS 1.2 against a TLS-1.3-pinned
certctl listener. Sections:
- 3-condition gate for when this runbook applies
- Architecture diagram (legacy client -> proxy TLS 1.2 -> certctl TLS 1.3)
- Full nginx config with ssl_protocols TLSv1.2 TLSv1.3 + ECDHE
AEAD-only ciphers + mTLS optional verification + proxy_ssl_protocols
TLSv1.3 on the backend hop
- HAProxy alternative config with ssl-min-ver TLSv1.2 frontend +
ssl-min-ver TLSv1.3 backend
- certctl-side env vars: CERTCTL_EST_PROXY_TRUSTED_SOURCES (CIDR
allowlist of trusted proxies) + CERTCTL_EST_TRUST_PROXY_CLIENT_CERT_HEADER
(toggle header-as-identity). Dual-knob design forces operators
to think about header spoofing.
- PCI-DSS Req 4 v4.0 §2.2.5 attestation language
- Forward-look on TLS 1.2 deprecation watch
certctl listener stays pinned at TLS 1.3 minimum (cmd/server/tls.go:131);
the proxy-to-certctl hop is also TLS 1.3.
M-024 (NIST SSDF PW.7.2) — govulncheck hard gate
.github/workflows/ci.yml: 'Run govulncheck' step renamed to
'Run govulncheck (M-024 hard gate)' with updated comment block
documenting why no carve-out is needed.
Bundle E's transitive bumps (x/net 0.42->0.47, x/crypto 0.41->0.45)
cleared the 5 L-021 deferred-call advisories that the original
Bundle F prompt designed an exception list for. Plain
'govulncheck ./...' is now the right gate; default exit-code
semantics fail on any future called-vuln advisory. Deferred-call
advisories that legitimately can't be remediated should land in
a NIST SSDF deviation log in docs/security.md, not be silenced.
Audit endgame:
51/55 closed (93%). Remaining open items don't require further
bundle work:
- M-029 frontend per-page migration backlog — closes per-PR
- L-004 rotation infra — explicit scope-pivot defer
- D-003 mutation testing — sandbox-blocked
- D-004 DAST suite — wired CI-only via security-deep-scan.yml
- D-005 testssl.sh — wired CI-only
- D-007 frontend semgrep — wired CI-only
Audit deliverables:
audit-report.md: score 49/55 -> 51/55 closed; M-023 + M-024
boxes flipped [x] with closure notes.
findings.yaml: 2 status flips
CHANGELOG.md: Bundle F section + 'Audit endgame' summary
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