[nfsv4] Eric Rescorla's Discuss on draft-ietf-nfsv4-xattrs-05: (with DISCUSS)
Eric Rescorla <ekr@rtfm.com> Wed, 24 May 2017 02:30 UTC
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From: Eric Rescorla <ekr@rtfm.com>
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Cc: draft-ietf-nfsv4-xattrs@ietf.org, Spencer Shepler <spencer.shepler@gmail.com>, nfsv4-chairs@ietf.org, spencer.shepler@gmail.com, nfsv4@ietf.org
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Date: Tue, 23 May 2017 19:30:51 -0700
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Subject: [nfsv4] Eric Rescorla's Discuss on draft-ietf-nfsv4-xattrs-05: (with DISCUSS)
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Eric Rescorla has entered the following ballot position for draft-ietf-nfsv4-xattrs-05: Discuss When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-nfsv4-xattrs/ ---------------------------------------------------------------------- DISCUSS: ---------------------------------------------------------------------- Since xattrs are application data, security issues are exactly the same as those relating to the storing of file data and named attributes. These are all various sorts of application data and the fact that the means of reference is slightly different in each case should not be considered security-relevant. As such, the additions to the NFS protocol for supporting extended attributes do not alter the security considerations of the NFSv4.2 protocol [RFC7862]. This seems inadequate. The issue is that if machine A writes some extended attribute which is security relevant (i.e., this file is only readable under certain conditions) and then machine B doesn't know about the attribute, then you have a security problem on B because it will not enforce it. It seems like FreeBSD uses extended attributes for this purpose, so this isn't just theoretical.
- [nfsv4] Eric Rescorla's Discuss on draft-ietf-nfs… Eric Rescorla
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Spencer Dawkins at IETF
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Eric Rescorla
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Spencer Dawkins at IETF
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Spencer Dawkins at IETF
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Nico Williams
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Marc Eshel
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Nico Williams
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… J. Bruce Fields
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Nico Williams
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… David Noveck
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Nico Williams
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Eric Rescorla
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… David Noveck
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Nico Williams
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Christoph Hellwig
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Nico Williams
- Re: [nfsv4] Eric Rescorla's Discuss on draft-ietf… Manoj Naik