Re: [secdir] secdir review odraft-ietf-netext-wifi-epc-eap-attributes
"Koodli, Rajeev" <rajeev.koodli@intel.com> Wed, 09 July 2014 16:16 UTC
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From: "Koodli, Rajeev" <rajeev.koodli@intel.com>
To: Leif Johansson <leifj@sunet.se>, "Joseph Salowey (jsalowey)" <jsalowey@cisco.com>
Thread-Topic: [secdir] secdir review odraft-ietf-netext-wifi-epc-eap-attributes
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Date: Wed, 09 Jul 2014 16:16:51 +0000
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References: <53BA57E3.8080300@sunet.se> <CFE03243.1594%rajeev.koodli@intel.com> <53BBF2A5.10506@sunet.se> <CFE160D4.1613%rajeev.koodli@intel.com> <298C55D6-7F96-4BB5-9313-BA02A2B4D2F2@cisco.com> <53BC2779.70506@sunet.se> <CFE1BBCA.166F%rajeev.koodli@intel.com> <3C10F572-C486-4D3D-8BFF-AB5507831B24@cisco.com> <616EA2AC-8CF2-4014-88F8-E1560BB268F4@sunet.se>
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Cc: "draft-ietf-netext-wifi-epc-eap-attributes.all@tools.ietf.org" <draft-ietf-netext-wifi-epc-eap-attributes.all@tools.ietf.org>, IESG <iesg@ietf.org>, "secdir@ietf.org" <secdir@ietf.org>
Subject: Re: [secdir] secdir review odraft-ietf-netext-wifi-epc-eap-attributes
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Fine with me. Thanks. -Rajeev On 7/8/14, 10:32 PM, "Leif Johansson" <leifj@sunet.se> wrote: > > >> 9 jul 2014 kl. 06:48 skrev "Joseph Salowey (jsalowey)" >><jsalowey@cisco.com>: >> >> >>> On Jul 8, 2014, at 3:20 PM, Koodli, Rajeev <rajeev.koodli@intel.com> >>>wrote: >>> >>> >>> RFC 4187: >>> >>> "8.2 Protocol Extensibility >>> >>> EAP-AKA can be extended by specifying new attribute types. If >>> skippable attributes are used, it is possible to extend the protocol >>> without breaking old implementations. As specified in Section 10.13, >>> if new attributes are specified for EAP-Request/AKA-Identity or >>> EAP-Response/AKA-Identity, then the AT_CHECKCODE MUST be used to >>> integrity protect the new attributes.² >> >> [Joe] Makes sense. Although it is redundant with RFC4187, It might be >>worth mentioning in the security considerations section that >>AT_CHECKCODE protects the attributes in the EAP/AKA-Identity messages >>once it has be verified by a valid AT_MAC. This would help clarify >>that the attributes are protected and at what point they are >>authenticated. It might also help remind implementers that they need to >>implement AT_CHECKCODE. > >agree! > >> >>> >>> So, this applies for the attribute in question. >>> >>> -Rajeev >>> >>> >>> >>>> On 7/8/14, 10:16 AM, "Leif Johansson" <leifj@sunet.se> wrote: >>>> >>>> >>>>> >>>>> [Joe] Is the attribute in question protected by AT_MAC? If not, its >>>>> possible that it could be modified in transit. >>>> >>>> yeah what Joe said >>
- [secdir] secdir review odraft-ietf-netext-wifi-ep… Leif Johansson
- Re: [secdir] secdir review odraft-ietf-netext-wif… Koodli, Rajeev
- Re: [secdir] secdir review odraft-ietf-netext-wif… Leif Johansson
- Re: [secdir] secdir review odraft-ietf-netext-wif… Koodli, Rajeev
- Re: [secdir] secdir review odraft-ietf-netext-wif… Joseph Salowey (jsalowey)
- Re: [secdir] secdir review odraft-ietf-netext-wif… Leif Johansson
- Re: [secdir] secdir review odraft-ietf-netext-wif… Koodli, Rajeev
- Re: [secdir] secdir review odraft-ietf-netext-wif… Joseph Salowey (jsalowey)
- Re: [secdir] secdir review odraft-ietf-netext-wif… Leif Johansson
- Re: [secdir] secdir review odraft-ietf-netext-wif… Koodli, Rajeev