Re: [Rum] [EXT] RUM security model

[Paul Kyzivat <[e-mail]>]

Eugene,

On 10/30/20 5:40 PM, Eugene Christensen wrote:
> There has to be some amount of trust between the providers so I think we should consider the use of an API key for access to the provider's configuration service.  If an API key is given and another provider abuses that, it obviously could result in something bad but it could quickly be revoked by the provider; right?  And the company that has abused it will likely not be trusted in the future (motivation for maintaining trust).

It depends on how key management works. Does each device/app need to 
test with each provider and receive a separate key from each provider?
Or does the testing happen with some testing organization who then 
provides a key that all providers accept?

The logistics of testing and revocation differ in these cases.

> Would it also be wise to use a client certificate for SIP communications once the RUE has the necessary info from the configuration service?  The client certificate could be embedded into the application.

 From a practical perspective I think we need to authenticate using a 
password at some point. (Just due to logistics of bootstrapping and 
identifying the human user. Perhaps only for the config service.) Or 
perhaps could use OAuth to authenticate using Facebook/Google/...

 From there it might make sense to provide certs for subsequent use.

> Is there any reason we cannot use language that makes the use of the API key and client certificate optional, at the discretion of the provider?  (e.g. The providers MAY require an API key for their configuration service and/or a client certificate for SIP communications).

Possibly. The devil is in the details here.

	Thanks,
	Paul

> Thanks,
> 
> Eugene.
> 
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> -----Original Message-----
> From: Paul Kyzivat <[e-mail]>
> Sent: Thursday, October 22, 2020 9:34 AM
> To: Olle E. Johansson <[e-mail]>; Brian Rosen <[e-mail]>
> Cc: Eugene Christensen <[e-mail]>; [e-mail]
> Subject: Re: [Rum] [EXT] RUM security model
> 
> [EXTERNAL]
> 
> On 10/22/20 2:29 AM, Olle E. Johansson wrote:
> 
> [snip]
> 
>>> Brute force and DDoS attacks can’t be addressed by this document except in the Security Consideration section.  They are implementation issues.
>> If there are specific attack vectors to RUM that doesn’t apply to SIP implementations in general, yes.
> 
> AFAIK there should be nothing special about VRS that makes it any more vulnerable to attack than any other sip service accessed over the public internet.
> 
> I'd like to hear from the providers if I am wrong about this.
> 
> 	Thanks,
> 	Paul
>