[Backport 7.x] Validate field permissions when creating a role #50917
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When creating a role, we do not check if the exceptions for the field permissions are a subset of granted fields. If such a role is assigned to a user then that user's authentication fails for this reason. We added a check to validate role query in elastic#46275 and on the same lines, this commit adds check if the exceptions for the field permissions is a subset of granted fields when parsing the index privileges from the role descriptor. Co-authored-by: Yogesh Gaikwad <bizybot@users.noreply.github.com> Backport of: elastic#50212
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When creating a role, we do not check if the exceptions for
the field permissions are a subset of granted fields. If such
a role is assigned to a user then that user's authentication fails
for this reason.
We added a check to validate role query in #46275 and on the same lines,
this commit adds check if the exceptions for the field
permissions is a subset of granted fields when parsing the
index privileges from the role descriptor.
Backport of: #50212
Co-authored-by: Yogesh Gaikwad bizybot@users.noreply.github.com