Andrea Cosentino created CAMEL-25022:
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Summary: camel-oauth: honor the JWT nbf (not before) claim when
authenticating bearer tokens with the servlet backend
Key: CAMEL-25022
URL: https://issues.apache.org/jira/browse/CAMEL-25022
Project: Camel
Issue Type: Improvement
Components: camel-oauth
Reporter: Andrea Cosentino
Assignee: Andrea Cosentino
Fix For: 4.23.0
When {{OAuthBearerTokenProcessor}} authenticates an access token through the
Jakarta servlet backend ({{ServletOAuth}}), {{UserProfile}} validates the JWS
signature and the issuer, and {{UserProfile.expired()}} evaluates the {{exp}}
claim. The {{nbf}} (not before) claim is copied into the profile attributes but
is never evaluated. RFC 7519 section 4.1.5 specifies that a JWT must not be
accepted for processing before its {{nbf}} time.
The other token validation paths of the module already evaluate {{nbf}}: the
Vert.x backend ({{VertxOAuth}}, through Vert.x {{User.expired(leeway)}}) and
the {{OAuthTokenValidationFactory}} SPI ({{JwtTokenValidator}}).
Proposed change:
* In {{UserProfile}}, reject a token whose {{nbf}} is later than the current
time plus the leeway configured in {{JWTOptions}} ({{getLeeway()}}, default 0,
the same default as the Vert.x backend and the SPI {{clock-skew-seconds}}
option).
* Add unit tests for a token with a future {{nbf}}, a past {{nbf}}, and an
{{nbf}} within the leeway.
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