Bug: SiteKiosk - FileSystem Access ( Ascii Version )

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SiteKiosk - FileSystem Access

Published
Credit
Risk
2006.12.14
Brett Moore (brett moore security-assessment com)
Low
CWE
CVE
Local
Remote
N/A
CVE-2006-6509
Yes
No

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.1/10
6.4/10
2.7/10
Exploit range
Attack complexity
Authentication
Local
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial

Still time before Christmas.

========================================================================

= SiteKiosk - FileSystem Access
=
= Vendor Website:
= http://www.sitekiosk.com/
=
= Affected Software:
= SiteKiosk < 6.5.150
=
= Public disclosure on Tuesday December 12, 2006
========================================================================

== Overview ==

SiteKiosk is an application used to secure public access terminals. It
is
designed to provide a safe and stable way for the use of public access
terminals with or without access to the Internet.

SiteKiosk is based on Internet Explorer and can be configured to
individually restrict access to Web sites, the operating system,
system settings, and applications. Your computer will be protected
against
any manipulation from the time you boot until you shut it down.

SiteKiosk suffers from a cross site scripting vulnerability, that leads
to filesystem access.

== Exploitation ==

SiteKiosk implements a 'skinning' feature so that the layout and display

of the browser can be modified. The 'skinning' feature uses an HTML
aware
control for the modified title bar of the main SiteKiosk window.

SiteKiosk displays the URL of the current location in the title bar of
the main window, and therefore any HTML code in the location will be
included in the title bar.

By default, SiteKiosk does not properly handle the ABOUT: prefix. The
URL
is directly outputted to the screen leading to a normal cross site
scripting
vulnerability.

Because the URL is also outputted to the title bar, script can be
executed
under the LOCAL computer zone.

If a user types the following into the address box, or browses a site
that
sets the location to; ABOUT:hello<a href=>click here</a>

The title bar will display a hyperlink. By clicking on this HREF in the
main windows title bar, the filesystem will be accessed with an explorer
window.

SiteKiosk also installs some activeX controls that are marked 'safe
for scripting'. One of these controls exposes two dangerous methods that
allow a SiteKiosk user to read and download any file from the kiosk
with the permissions of the user running SiteKiosk.

== Solutions ==

A new version of SiteKiosk has been released that addresses these
vulnerabilities. It can be downloaded from http://www.sitekiosk.com.

== Credit ==

Discovered and advised to SiteKiosk November 30, 2006 by Brett Moore of
Security-Assessment.com

== About Security-Assessment.com ==

Security-Assessment.com is Australasia's leading team of Information
Security consultants specialising in providing high quality Information
Security services to clients throughout the Asia Pacific region. Our
clients include some of the largest globally recognised companies in
areas such as finance, telecommunications, broadcasting, legal and
government. Our aim is to provide the very best independent advice and
a high level of technical expertise while creating long and lasting
professional relationships with our clients.

Security-Assessment.com is committed to security research and
development, and its team continues to identify and responsibly publish
vulnerabilities in public and private software vendor's products.
Members of the Security-Assessment.com R&D team are globally recognised
through their release of whitepapers and presentations related to new
security research.

Security-Assessment.com is an Endorsed Commonwealth Government of
Australia supplier and sits on the Australian Government
Attorney-General's Department Critical Infrastructure Project panel.
We are certified by both Visa and MasterCard under their Payment
Card Industry Data Security Standard Programs.

See this note in TXT Version

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Ascii Version