tomcat-coyote/tomcat-embed-core is vulnerable to denial of service. The vulnerability exists due to an incomplete fix of CVE-2019-0199 which is due to the lack of timeout idling streams and keeping the idle streams open without any read/write and request/response data.
lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html
mail-archives.apache.org/mod_mbox/tomcat-dev/201906.mbox/%[email protected]%3E
www.securityfocus.com/bid/108874
access.redhat.com/errata/RHSA-2019:3929
access.redhat.com/errata/RHSA-2019:3931
github.com/apache/tomcat/compare/5b9399df512f5340bdf29573200aaa3eacbb0f8a...8d14c6f
lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a@%3Cannounce.tomcat.apache.org%3E
lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a@%3Cdev.tomcat.apache.org%3E
security.netapp.com/advisory/ntap-20190625-0002/
support.f5.com/csp/article/K17321505
tomcat.apache.org/security-8.html
tomcat.apache.org/security-9.html
usn.ubuntu.com/4128-1/
usn.ubuntu.com/4128-2/
www.debian.org/security/2020/dsa-4680
www.oracle.com/security-alerts/cpuapr2020.html
www.oracle.com/security-alerts/cpuApr2021.html
www.oracle.com/security-alerts/cpujan2020.html
www.oracle.com/security-alerts/cpuoct2020.html
www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
www.synology.com/security/advisory/Synology_SA_19_29