Ubuntu Security Notice USN-4596-1

Ubuntu Security Notice 4596-1 - It was discovered that Tomcat did not properly manage HTTP/2 streams. An attacker could possibly use this to cause Tomcat to consume resources, resulting in a denial of service. It was discovered that Tomcat did not properly release the HTTP/1.1 processor after the upgrade to HTTP/2. An attacker could possibly use this to generate an OutOfMemoryException, resulting in a denial of service. Various other issues were also addressed.
Ubuntu Security Notice USN-4596-1