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In a nutshell, it’s when you visit a malicious website and the attacker is able to take control of the links that your browser visits. The problem affects all of the different browsers except something like lynx. The issue has nothing to do with JavaScript so turning JavaScript off in your browser will not help you. It’s a fundamental flaw with the way your browser works and cannot be fixed with a simple patch. With this exploit, once you’re on the malicious web page, the bad guy can make you click on any link, any button, or anything on the page without you even seeing it happening.

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In response to my story earlier on the cross-browser Clickjacking exploit/threat, I received the following e-mail from Giorgio Maone, creator of the popular Firefox NoScript plug-in:

Hi Ryan,

I’ve seen a lot of speculation and confusion in the comments to your Clickjacking article about NoScript not being able to mitigate [the issue].

I had access to detailed information about how this attack works and I can tell you the following:

1. It’s really scary
2. NoScript in its default configuration can defeat most of the possible attack scenarios (i.e. the most practical, effective and dangerous) — see this comment by Jeremiah Grossman himself.
3. For 100% protection by NoScript, you need to check the "Plugins|Forbid [IFRAME]" option..

Cheers,
Giorgio

I also received private confirmation from a high-level source at an affected vendor about the true severity of this issue. In a nutshell, I was told that it’s indeed “very, freaking scary” and “near impossible” to fix properly.

Tod Beardsley from BreakingPoint has posted a few proof-of-concept exploits with speculation around clickjacking.

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