Important: nginx:1.14 security update

Nginx is a web server and a reverse proxy server for HTTP, SMTP, POP3 (Post Office Protocol 3) and IMAP protocols, with a focus on high concurrency, performance and low memory usage. Security Fix(es): * HTTP/2: large amount of data request leads to denial of service (CVE-2019-9511) * HTTP/2: flood using PRIORITY frames resulting in excessive resource consumption (CVE-2019-9513) * HTTP/2: 0-length headers leads to denial of service (CVE-2019-9516) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.