It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.Referenceshttps://access.redhat.com/errata/RHSA-2017:1411http://rhn.redhat.com/errata/RHSA-2017-1409.htmlhttps://www.debian.org/security/2017/dsa-3906https://access.redhat.com/errata/RHSA-2017:3458https://access.redhat.com/errata/RHSA-2017:1410https://access.redhat.com/errata/RHSA-2017:1412https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2670https://access.redhat.com/errata/RHSA-2017:3455https://access.redhat.com/errata/RHSA-2017:3456https://access.redhat.com/errata/RHSA-2017:3454http://www.securityfocus.com/bid/98965
