Re: webRTC and Content Security Policy connect-src

On 12/01/2018 22:38, Peter Thatcher wrote:
>
>     Unless you get lucky and peer-reflexive happens to work, which it
>     won't if both sides have the same CSP poilicy.
>
>
> Hmmm.... I forgot about peer-reflexive candidates.  Those would allow 
> JS to send data out by creating a PeerConnection, gathering STUN 
> candidates along with ICE ufrag/pwd (even with a whitelisted STUN 
> server), send those candidates to a controlled server, send an ICE 
> check from the server to the client, and get the client connect back.
>
> Which means whitelisted domain candidates wouldn't be enough.  You'd 
> also have to disable peer reflexive candidates.

What do you mean by "send those candidates to a controlled server"? If 
CSP is in place you should not be able to do so.

Regards
Sergio

Received on Friday, 12 January 2018 22:13:02 UTC