full-disclosure - Re: Firefox focus stealing vulnerability (possibly other browsers)

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Date: Sun, 11 Feb 2007 23:16:05 +0100 (CET)
From: Michal Zalewski <lcamtuf@...ne.ids.pl>
To: "pdp (architect)" <pdp.gnucitizen@...glemail.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Firefox focus stealing vulnerability
 (possibly other browsers)

On Sun, 11 Feb 2007, pdp (architect) wrote:

> this is a design problem that is not easy to fix.

That argument would work for a patch deferred by a month or two - not for
seven years.

And it's not really that much of an issue: disallow script-assisted
focusing on file input fields, or a) prevent event target from being
changed in onKeyDown (this is what MSIE does) + b) prevent scripts from
reading file input field value (really no reason for them to).

/mz

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