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Re: Facebook URL Redirect Vulnerability
From: Nathan Power <np () securitypentest com>
Date: Wed, 2 Mar 2011 09:30:51 -0500

There are 3 different steps to perform an attack using a URL redirect:  1)
trick the user 2) redirect 3) exploit .. We are using a Facebook URL to
trick the user, we are using the URL redirect as the catalyst to perform an
exploit.

Here are some examples of the types of attacks you can perform with a URL
redirect, CSRF, phishing (fake fb login), and browser exploits (javascript
zombie,0days,etc).

How would you have written the impact section?

To be clear - I was trying to make a point when determining the impact, once
you click on a bad link, bad things will happen.


Nathan Power
www.securitypentest.com



On Tue, Mar 1, 2011 at 8:56 PM, Andrew Farmer <andfarm () gmail com> wrote:

On 2011-02-28, at 09:42, Nathan Power wrote:
3. Impact:

Potentially allow an attacker to compromise a victim’s Facebook account
and/or computer system.

Do you have an actual attack in mind which could accomplish either of these
goals, or is this wishful thinking? (Browser exploits don't really count, as
those would work just fine with or without the redirect.)

To be clear - open redirects are certainly a problem, but don't try to call
them any more than that.
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