CVE-2017-7189

main/streams/xp_socket.c in PHP 7.x before 2017-03-07 misparses fsockopen
calls, such as by interpreting fsockopen(‘127.0.0.1:80’, 443) as if the
address/port were 127.0.0.1:80:443, which is later truncated to
127.0.0.1:80. This behavior has a security risk if the explicitly provided
port number (i.e., 443 in this example) is hardcoded into an application as
a security policy, but the hostname argument (i.e., 127.0.0.1:80 in this
example) is obtained from untrusted input.

Bugs

• <https://bugs.php.net/bug.php?id=74192 (private)>
• <https://bugs.php.net/bug.php?id=74429&gt;
• <https://bugzilla.suse.com/show_bug.cgi?id=CVE-2017-7189&gt;

Notes