File: ghsa-3cr5-j632-f35r.phpt

package info (click to toggle)
php8.4 8.4.16-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 211,276 kB
  • sloc: ansic: 1,176,142; php: 35,419; sh: 11,964; cpp: 7,208; pascal: 4,951; javascript: 3,091; asm: 2,817; yacc: 2,411; makefile: 696; xml: 446; python: 301; awk: 148
file content (21 lines) | stat: -rw-r--r-- 506 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
--TEST--
GHSA-3cr5-j632-f35r: Null byte termination in fsockopen() 
--FILE--
<?php

$server = stream_socket_server("tcp://localhost:0");

if (preg_match('/:(\d+)$/', stream_socket_get_name($server, false), $m)) {
    $client = fsockopen("localhost\0.example.com", intval($m[1]));
    var_dump($client);
    if ($client) {
        fclose($client);
    }
}
fclose($server);

?>
--EXPECTF--

Warning: fsockopen(): Unable to connect to localhost:%d (The hostname must not contain null bytes) in %s
bool(false)