[security] Open Redirector issue with checkid_immediate

David Recordon david at sixapart.com
Tue Jun 9 17:45:18 UTC 2009


We actually just use Google for this, via URLs like http://www.google.com/url?sa=D&q=http%3A%2F%2Fseleniumhq.org%2F 
.

--David

On Jun 8, 2009, at 10:00 PM, Allen Tom wrote:

> SitG Admin wrote:
>>
>> It could also detect people who are browsing through proxies (or  
>> modified browsers) to strip the referer information for their  
>> privacy.
>>
> Many organizations run proxies to strip the referrer from outgoing  
> requests because of privacy issues.
>
> Also, checking that the referrer's domain  matches the return_to  
> could be problematic for RPs that run multiple domains, but have a  
> centralized OpenID RP service. Another problematic scenario is where  
> the RP integrates with a 3rd party to implement OpenID  
> authentication, such as Janrain's RPX or Google Friend Connect.
>
> Allen
>
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