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https://issues.apache.org/jira/browse/KNOX-3414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18104548#comment-18104548
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ASF subversion and git services commented on KNOX-3414:
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Commit a2c1470c86bdd0eb45338447c0fc6ed2b5c498a0 in knox's branch
refs/heads/knox_idf from Sandor Molnar
[ https://gitbox.apache.org/repos/asf?p=knox.git;h=a2c1470c8 ]
KNOX-3414: publish multiple JWKs and select verification key by kid
Support a manual signing-key rotation for gateway-signed JWTs (KnoxIDF
OAuth2/OIDC tokens and KnoxSSO/knoxtoken tokens) without invalidating
already-issued tokens.
- GatewayConfig: new optional param gateway.signing.key.aliases.additional,
a comma-separated list of signing-keystore aliases retained alongside the
current gateway.signing.key.alias. New getSigningKeyAliases() returns the
current key first, then the additional keys (de-duplicated). Defaults to
just the current key, so single-key deployments are unchanged.
- JWKSResource: publish one JWK per configured alias on /jwks, each with its
own kid (SHA-256 thumbprint), instead of only the current key. A single-key
deployment still yields exactly one JWK.
- DefaultTokenAuthorityService: the single-key RSA verification fallback is
now kid-aware. When more than one alias is configured it matches the token's
kid header against each configured key's thumbprint and verifies with the
matching (possibly rotated-out) key; otherwise it falls back to the current
key, preserving the historical behavior. kid stamping on issuance was
already in place.
Tests: JWKSResource publishes one JWK per alias with distinct kids;
DefaultTokenAuthorityService selects a rotated-out key by kid and rejects it
once that alias is removed; GatewayConfigImpl alias parsing/dedup/none.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
> KnoxIDF (OIDC Provider): security hardening, correctness fixes, and
> documentation
> ---------------------------------------------------------------------------------
>
> Key: KNOX-3414
> URL: https://issues.apache.org/jira/browse/KNOX-3414
> Project: Apache Knox
> Issue Type: Improvement
> Components: KnoxIDF
> Reporter: Sandor Molnar
> Assignee: Sandor Molnar
> Priority: Critical
> Fix For: 3.1.0
>
>
> Follow-up work on the KnoxIDF OAuth2/OIDC Authorization Server. Items to fix:
> Client authentication & flow security
> - Authenticate the client on the refresh_token grant.
> - Authenticate the client on the authorization_code grant (PKCE S256 or
> constant-time client_secret).
> - Reject PKCE plain; accept only S256, and advertise only S256 in discovery.
> - Require and validate state/nonce; bind the federated id_token to the
> request via nonce.
> - Atomically consume authorization codes and refresh tokens before issuance
> (close replay windows).
> Federation
> - Fully validate the federated OP id_token (signature/JWKS, issuer, audience,
> exp/nbf, sub) before trusting any claim.
> - Reject a federated id_token missing sub with a 4xx, not a 500.
> - Fail closed when a federated-OP client-secret alias is unresolvable.
> - Stop persisting federated OP access tokens at rest; store only
> ID-token-derived identity data.
> - Activate federated-identity persistence (was silently disabled) with
> self-provisioning embedded Derby default.
> Redirect-URI / registration
> - Normalize redirect_uri path before wildcard matching; match on parsed URI
> components (fix open redirect).
> - Build a well-formed success redirect when redirect_uri already carries a
> query.
> - Require HTTPS for registered redirect URIs (loopback HTTP excepted, RFC
> 8252).
> - Make anonymous dynamic client registration an explicit, secure-by-default
> opt-in.
> Correctness / robustness
> - Fix SCOPE_ATTRIBUTE always resolving to null (double getClaim).
> - Fix iat=1970 regression on non-KnoxIDF tokens (default issue time to now).
> - /userinfo returns 401 invalid_token, not 500, for a bad bearer token.
> - Fix broken double-checked locking in service init paths.
> - Escape LDAP username input; remove hardcoded LDAP system-password fallback
> (fail fast).
> - Per-request claim map (fix cross-user claim leakage in the shared
> singleton).
> Persistence
> - Fix TOCTOU on federated-identity insert (unique constraint as arbiter).
> - Write identity + attributes in a single transaction.
> - Align Derby schema (NOT NULL / unique index) with other dialects.
> Key management & auditing
> - Publish multiple JWKs and select the verification key by kid (enables
> zero-downtime signing-key rotation).
> - Emit structured audit records across the OAuth2/OIDC endpoints.
> OIDC discovery / docs
> - Complete OIDC discovery metadata for OAuth/MCP client integration.
> - Add opt-in Keycloak federation E2E test; extend existing E2E suite to cover
> the fixes above.
> - Add the Identity Federation (OIDC Provider) documentation book.
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