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Re: A technique to mitigate cookie-stealing XSS attacks


From: Ulf Harnhammar <ulfh () update uu se>
Date: Sun, 10 Nov 2002 04:21:41 +0100 (CET)

On Thu, 7 Nov 2002, Justin King wrote:

I would be very interested in major browsers supporting a <dead> tag with an
optional parameter to be a hash of the data between the opening and closing
dead tag. This tag would indicate that no "live" elements of HTML be
supported (e.g., JavaScript, VBScript, embed, object).

I'm not sure if that's the best solution. Lots of code out there do much
less filtering than it should, so there will probably be a way to include
a </dead> tag and then use all the usual XSS tricks.

// Ulf Harnhammar
   VSU Security
   ulfh () update uu se


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