PHP Server Side Request Forgery Security Bypass Vulnerability（CVE-2017-7272）

For historical reasons, fsockopen accepts the port and hostname separately: fsockopen'127.0.0.1', 80 However, with the introdcution of stream transports in PHP 4.3, it became possible to include the port in the hostname specifier: fsockopen'127.0.0.1:80' Or more formally:...