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This PR fixes a bug in the way FEVER currently handles incoming JSON fields that are
null
(not the string"null"
but a JSON null value): These cause a parse error, as they are not handled correctly by the low-leveljsonparser.Parse*()
function used in the main JSON parser code. We need to explicitly check for those and skip them.Note (for peace of mind) that this issue is not relevant for incoming Suricata EVE-JSON (as this will never set
null
fields) but only when handling EVE-JSON from other sources.