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Date: Sun, 7 Aug 2011 20:30:53 -0700 From: Andrew Farmer <andfarm@...il.com> To: CnCxzSec衰仔 <cncxzhack@...il.com> Cc: Full Disclosure <full-disclosure@...ts.grok.org.uk> Subject: Re: IE handling the HTML notes incorrectly may lead to XSS attacks On 2011-08-07, at 19:53, CnCxzSec衰仔 wrote: > hi all, here is an interesting trick to perform an xss attack with IE > browsers. > > some rich text applications such as email and blog, may provide HTML uses > but have a policy to block the on-event execution to prevent the XSS attack. > However, this applications may also allow the HTML notes uses,for instance > "<!-- -->" Any such applications are likely to also be vulnerable to a simpler attack based on "downlevel-hidden" conditional comments: <!--[if IE]> <script>anything you want can go here, presumably</script> <![endif]--> _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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