Re: [PATCH v2 06/15] ima: add parser of digest lists metadata

From: Mimi Zohar
Date: Sat Nov 18 2017 - 18:25:27 EST

Hi Serge,

On Fri, 2017-11-17 at 22:20 -0600, Serge E. Hallyn wrote:
> On Tue, Nov 07, 2017 at 11:37:01AM +0100, Roberto Sassu wrote:
> > from a predefined position (/etc/ima/digest_lists/metadata), when rootfs
> > becomes available. Digest lists must be loaded before IMA appraisal is in
> > enforcing mode.
> I'm sure there's a good reason for it, but this seems weird to me.
> Why read it from a file on disk instead of accepting it through say
> a securityfile write?

Assuming that the concept of a white list is something we want to
support, then at minimum the list needs to be signed and verified.
Instead of defining a new Kconfig pathname option, a securityfs file
could read it, like the IMA policy.