Medium: php70, php56

Issue Overview: Stack-based buffer under-read in ext/standard/httpfopenwrapper.c:phpstreamurlwraphttpex function when parsing HTTP response allows denial of service In PHP through 5.6.33, 7.0.x before 7.0.28, 7.1.x through 7.1.14, and 7.2.x through 7.2.2, there is a stack-based buffer under-read...