Support multiple audiences when configuring required_audience
for auth domains utilizing JWT
#12
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Description
Opening this in Draft to solicit feedback. This allows configuring JWT, SAML and OIDC backends with a list of required audiences or a single required audience.
The RFC for JWTs does not specify how multiple audiences should be handled and instead mentions:
This PR allows configuration of an auth backend with multiple required audiences and when authenticating a token, the token's
aud
claim must be a subset of the configured required audiences. If a token'saud
claim has at least one audience that is not in the list of required audiences for the auth domain then it would fail authentication.Enhancement
Issues Resolved
opensearch-project#3765
Check List
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