full-disclosure - Re: Firefox bookmark cross-domain surfing vulnerability

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Date: Thu, 22 Feb 2007 07:54:50 +0530
From: v3dt3n <mkmaxx@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Firefox bookmark cross-domain surfing
	vulnerability

>
> On 2/22/07, Michal Zalewski <lcamtuf@...ne.ids.pl> wrote:
> > There is an interesting vulnerability in how Firefox handles bookmarks.
> > The flaw allows the attacker to steal credentials from commonly used
> > browser start sites (for Firefox, Google is the seldom changed default;
> > that means exposure of GMail authentication cookies, etc).
> >
> > The problem: it is relatively easy to trick a casual user into
> bookmarking
> > a window that does not point to any physical location, but rather, is an
> > inline data: URL scheme. When such a link is later retrieved, Javascript
> > code placed therein will execute in the context of a currently visited
> > webpage. The destination page can then continue to load without the user
> > noticing.
> >
> > The impact of such a vulnerability isn't devastating, but as mentioned
> > earlier, any attention-grabbing webpage can exploit this to silently
> > launch attacks against Google, MSN, AOL credentials, etc. In an unlikely
> > case the victim is browsing local files or special URLs before following
> a
> > poisoned bookmark, system compromise is possible.
> >
> > Thanks to Piotr Szeptynski for bringing up the subject of bookmarks and
> > inspiring me to dig into this.
> >
> > Self-explanatory demo page:
> >   http://lcamtuf.coredump.cx/ffbook/
> >
> > This is being tracked as:
> >   https://bugzilla.mozilla.org/show_bug.cgi?id=371179
>
> In April, just after MoPHPB, Michal Zalewski is going to plan
> a Month of Firefox Bugs.


Oh no!! n3tty does not like that!! :(

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