bugtraq - Re: Mozilla Thunderbird : Multiple Information Disclosure Vulnerabilities

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Message-ID: <4404E385.5060400@shockley.net>
Date: Tue, 28 Feb 2006 18:57:57 -0500
From: Steve Shockley <steve.shockley@...ckley.net>
To: Renaud Lifchitz <r.lifchitz@...dream.com>
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security@...illa.org
Subject: Re: Mozilla Thunderbird : Multiple Information
	Disclosure Vulnerabilities

Renaud Lifchitz wrote:
> Mozilla Thunderbird : Multiple Information Disclosure Vulnerabilities

The css part of this "exploit" is actively used by Intellicontact (or 
whatever they call themselves this week), the host of the factcheck.org 
mailing list.  For example:

<LINK href=http://mail1.icptrack.com/track/relay.php?r=###&msgid=
=###&act=####&admin=0&destination=http://www.factcheck.org/styles/subpage_nn.css 
type=text/css rel=stylesheet>

To work around this, set:

user_pref("mailnews.display.html_as", 3);

and

user_pref("mailnews.display.html_sanitizer.allowed_tags", "html head 
title body p br div(lang,title) h1 h2 h3 h4 h5 h6 ul(type,compact) 
ol(type,compact,start) li(type,value) dl dt dd blockquote(type,cite) pre 
noscript noframes strong em sub sup span(lang,title) acronym(title) 
abbr(title) del(title,cite,datetime) ins(title,cite,datetime) q(cite) 
a(href,name,title) base(href) area(alt) applet(alt) object(alt) var samp 
dfn address kbd code cite s strike tt b i table(align) caption 
tr(align,valign) td(rowspan,colspan,align,valign) 
th(rowspan,colspan,align,valign)");
(one line)

in prefs.js.

works around the css problem because link isn't an allowed html tag.  I 
didn't test your iframe version, but I suspect this will work around 
that as well.

Reference: http://www.bucksch.com/1/projects/mozilla/108153/
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