Full Disclosure mailing list archives
Re: Facebook URL Redirect Vulnerability
From: Nathan Power <np () securitypentest com>
Date: Wed, 2 Mar 2011 14:59:18 -0500
I understand what your saying but I don't agree. We may have to agree to disagree on this. You can obscure a URL several different ways. For this particular case, I used decimal to IP. In the following example, you can see the target URL isn't in a human readable format. http://apps.facebook.com/truthsaboutu/track.php?r=http%3A%2F%2F1208929384 Also when you post a link on Facebook, 'apps.facebook.com' is the only text displayed to the user. Nathan Power www.securitypentest.com On Wed, Mar 2, 2011 at 2:38 PM, Andrew Farmer <andfarm () gmail com> wrote:
On 2011-03-02, at 06:30, Nathan Power wrote: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 performanexploit. Here are some examples of the types of attacks you can perform with a URL redirect, CSRF, phishing (fake fb login), and browser exploits(javascriptzombie,0days,etc). How would you have written the impact section?Something like this:3. Impact: An attacker may obfuscate the target of a link, potentiating phishingattacks and/or bypassing some simple URL filters. Or something of the sort. The actual target of the link isn't obscured in the URL, so it's not even particularly convincing if the URL is displayed in plain text.
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Current thread:
- Re: Facebook URL Redirect Vulnerability Weir, Jason (Mar 01)
- Re: Facebook URL Redirect Vulnerability Nathan Power (Mar 03)
- Re: Facebook URL Redirect Vulnerability Weir, Jason (Mar 02)
- <Possible follow-ups>
- Re: Facebook URL Redirect Vulnerability Andrew Farmer (Mar 01)
- Re: Facebook URL Redirect Vulnerability Chris Evans (Mar 01)
- Re: Facebook URL Redirect Vulnerability Wesley Kerfoot (Mar 01)
- Re: Facebook URL Redirect Vulnerability Nathan Power (Mar 03)
- Re: Facebook URL Redirect Vulnerability Andrew Farmer (Mar 02)
- Re: Facebook URL Redirect Vulnerability Nathan Power (Mar 03)
- Re: Facebook URL Redirect Vulnerability Chris Evans (Mar 03)
- Re: Facebook URL Redirect Vulnerability Javier Bassi (Mar 03)
- Re: Facebook URL Redirect Vulnerability Valdis . Kletnieks (Mar 03)
- Re: Facebook URL Redirect Vulnerability Nathan Power (Mar 03)