Still time before Christmas.
======================================================================== SiteKiosk - FileSystem Access
= Vendor Website:
= 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
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
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
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
is directly outputted to the screen leading to a normal cross site
Because the URL is also outputted to the title bar, script can be
under the LOCAL computer zone.
If a user types the following into the address box, or browses a site
sets the location to; ABOUT:helloclick here
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
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
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