SNI wildcard mappings match multiple level of subdomain ------------------------------------------------------- Key: WFLY-11660 URL: https://issues.jboss.org/browse/WFLY-11660 Project: WildFly Issue Type: Bug Components: Security Affects Versions: 15.0.0.Final, 15.0.1.Final Environment: Wildfly build with undertow and wildfly-core modules build from following sources: * https://github.com/stuartwdouglas/undertow/tree/sni * https://github.com/stuartwdouglas/wildfly-core/tree/sni Reporter: Pavel Jelinek Assignee: Darran Lofthouse Priority: Major Labels: SNI Based on the [text from analasys|https://github.com/wildfly/wildfly-proposals/blob/master/securit...]: {quote} Wildcard names use * as a wildcard, and can only be used to match a single level of subdomain in much the same way as with wildcard certificates. {quote} As such, in case I have configured SNI mapping for: {code} .*\\.example\\.com {code} I expect that this mapping is selected for any single level of subdomain of example.com although, in case of any extra subdomain, this mapping is not utilized. In other words, following hostnames should match: {code} test.example.com another-test.example.com {code} although following should not be matched and default server-ssl-context shall be used instead: {code} two-sublevel.one-sublevel.example.com {code} Current behaviour also matches also 'two-sublevel.one-sublevel.example.com'.