Re: [alto] [ietf-wg-alto/draft-ietf-alto-oam-yang] Security Considerations (Issue #33)

mohamed.boucadair@orange.com Tue, 09 May 2023 13:40 UTC

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From: mohamed.boucadair@orange.com
To: Jensen Zhang <jingxuan.n.zhang@gmail.com>, ietf-wg-alto/draft-ietf-alto-oam-yang <reply+ABCCA5IJEPGBNLOGWRS6ASWCEWNPTEVBNHHGCSJ3GE@reply.github.com>
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Thread-Topic: [alto] [ietf-wg-alto/draft-ietf-alto-oam-yang] Security Considerations (Issue #33)
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References: <ietf-wg-alto/draft-ietf-alto-oam-yang/issues/33@github.com> <CAAbpuyrAXeNsDDO1gS-HG9X0r=WY6CCsxPJ_NUVhth57KNQDGw@mail.gmail.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/alto/66aRlQQMtJXFF2hGyLc2dOimT98>
Subject: Re: [alto] [ietf-wg-alto/draft-ietf-alto-oam-yang] Security Considerations (Issue #33)
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Hi Jensen,

Thanks for drafting that text. I do still that some sensitive data nodes have to be listed. For example,


  *   Access to all authentication-related data nodes should be protected; those that are inherited from other models have already “nacm:default-deny-write” statement, while there is no such protected from the data node that are added in the draft.
  *   Consider the example of “poll-interval”: a misbehaving node can set a very large value that would lead to maintaining stale data. Setting very low values can also be considered as a misbehavior.

Cheers,
Med

De : alto <alto-bounces@ietf.org> De la part de Jensen Zhang
Envoyé : mardi 9 mai 2023 15:14
À : ietf-wg-alto/draft-ietf-alto-oam-yang <reply+ABCCA5IJEPGBNLOGWRS6ASWCEWNPTEVBNHHGCSJ3GE@reply.github.com>
Cc : IETF ALTO <alto@ietf.org>
Objet : Re: [alto] [ietf-wg-alto/draft-ietf-alto-oam-yang] Security Considerations (Issue #33)

Hi Med,

I am not aware of which data nodes are sensitive in this module. If you find any, please point them out.

But I am aware that the extended modules (e.g., examples in the appendix) may include sensitive data. Especially, the "data-source" node. So I added a new paragraph [1] to clarify this. Do you think it is enough?

[1]: https://github.com/ietf-wg-alto/draft-ietf-alto-oam-yang/commit/5a2a40db5ebe45a3e16a836f8cae38891f4b5bce

Thanks,
Jensen

On Mon, Mar 20, 2023 at 10:06 PM Med <notifications@github.com<mailto:notifications@github.com>> wrote:

I'm afraid that the following text is to be revised:

None of the readable data nodes in these YANG module are considered sensitive or vulnerable in network environments. The NACM "default-deny-all" extension has not been set for any data nodes defined in these module.

None of the writable data nodes in these YANG modules are considered sensitive or vulnerable in network environments. The NACM "default-deny-write" extension has not been set for any data nodes defined in these modules.

There are several sensitive data node that should be listed. Access to some data by non-authorized parties may reveal internal topologies/etc.

There should be also a note about the "http-listen" use.

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