Re: [OAUTH-WG] I-D Action: draft-ietf-oauth-security-topics-17.txt

2021-04-08 Thread Daniel Fett
Hi George, client impersonation is covered extensively in RFC6749 already, with further recommendations in RFC6819. The basics of this attack have not changed since public clients where introduced, but, as you mention, on mobile operating systems we see new mechanics for authenticating clients (or

Re: [OAUTH-WG] I-D Action: draft-ietf-oauth-security-topics-17.txt

2021-04-07 Thread George Fletcher
While this is mostly covered in section 8.6 of RFC 8252 for native apps, I wonder if we shouldn't mention "Client Impersonation" in this doc as well in that any public client can be easily impersonated. Mobile OS's are providing additional mechanisms for "authenticating" the client but it's unc

Re: [OAUTH-WG] I-D Action: draft-ietf-oauth-security-topics-17.txt

2021-04-06 Thread Daniel Fett
Hi all, this version most importantly updates the recommendations for Mix-Up mitigation, building upon https://tools.ietf.org/html/draft-ietf-oauth-iss-auth-resp-00. The description of Mix-Up attacks has also been improved. Smaller changes:    * Make the use of metadata RECOMMENDED for both serv