Full Disclosure mailing list archives

Re: The email that hacks you


From: Bogdan Calin <bogdan () acunetix com>
Date: Wed, 28 Nov 2012 13:15:39 +0200

Yes, I agree with you.

However, my opinion it that it should be fixed once and for all in iOS/Webkit (and the other
browsers) by disabling resources loaded with credentials.

At some point, as a protection for phishing, URLs with the format
scheme://username:password@hostname/ were disabled.
When you enter in the browser bar something like that it doesn't work in most browsers.

I was surprised to see that doing something like <image
src='scheme://username:password@hostname/path'> works in Chrome and Firefox but if you enter the
same URL in the browser bar it doesn't work. This doesn't work in Internet Explorer, which is the
right behavior in my opinion.

I don't see any good reason why something like this should work. Closing this in browsers will solve
this problem once and for all.

On 11/28/2012 1:00 PM, Guifre wrote:
Hello,

"I can also confirm that this attack works on iPhone, iPad and Mac's
default mail client."

Of course, it works anywhere where arbitrary client-side code can be
executed... IMAHO, the issue here is not your iphone loading images,
there are millions of attack vectors to trigger this attack... The
problem is the CSRF weaknesses of your router admin panel that should
be fixed by synchronizing a secret token or by using any other well
known mitigation strategy against these attacks.

Best Regards,
Guifre.


-- 
Bogdan Calin - bogdan [at] acunetix.com
CTO
Acunetix Ltd. - http://www.acunetix.com
Acunetix Web Security Blog - http://www.acunetix.com/blog
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