WebSocket08FrameDecoder in Netty 3.6.x before 3.6.9, 3.7.x before 3.7.1, 3.8.x before 3.8.2, 3.9.x before 3.9.1, and 4.0.x before 4.0.19 allows remote attackers to cause a denial of service (memory consumption) via a TextWebSocketFrame followed by a long stream of ContinuationWebSocketFrames.
https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html
https://github.com/netty/netty/issues/2441
http://www.securityfocus.com/bid/67182
http://secunia.com/advisories/59290
http://secunia.com/advisories/58280
http://rhn.redhat.com/errata/RHSA-2015-0765.html
http://rhn.redhat.com/errata/RHSA-2015-0720.html
http://rhn.redhat.com/errata/RHSA-2015-0675.html
http://rhn.redhat.com/errata/RHSA-2014-1351.html
http://rhn.redhat.com/errata/RHSA-2014-1021.html
http://rhn.redhat.com/errata/RHSA-2014-1020.html