From:             dm
Operating system: All
PHP version:      Irrelevant
Package:          Apache2 related
Bug Type:         Bug
Bug description:HTTP_HOST, SERVER_NAME, SERVER_PORT spoofing

Description:
------------
`HTTP_HOST` is the value from `Host` header, which can, naturally, be
spoofed.
On the other hand, `SERVER_NAME` and `SERVER_PORT` should reflect real
values.
I've tested some configurations and on majority you can at least
change/spoof `SERVER_PORT`.
This can lead to security issues since these environment variables are
often trusted.

Test script:
---------------
<?php

$ch = curl_init('http://smchiptuning.com/http_host.php');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Host: 127.0.0.1:1337'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
echo curl_exec($ch);
curl_close($ch);

/**
http_host.php

<?php

var_dump($_SERVER['SERVER_NAME'], $_SERVER['SERVER_PORT']);

*/

Expected result:
----------------
string(16) "smchiptuning.com" string(2) "80"

Actual result:
--------------
string(9) "127.0.0.1" string(4) "1337"

-- 
Edit bug report at https://bugs.php.net/bug.php?id=64457&edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=64457&r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=64457&r=trysnapshot53
Try a snapshot (trunk):     
https://bugs.php.net/fix.php?id=64457&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=64457&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=64457&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=64457&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=64457&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=64457&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=64457&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=64457&r=notwrong
Not enough info:            
https://bugs.php.net/fix.php?id=64457&r=notenoughinfo
Submitted twice:            
https://bugs.php.net/fix.php?id=64457&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=64457&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64457&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=64457&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=64457&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=64457&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64457&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=64457&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=64457&r=mysqlcfg

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