[PATCH v2] integrity: Always reference the blacklist keyring with apprasial
Mimi Zohar
zohar at linux.ibm.com
Wed Jul 12 17:40:33 UTC 2023
On Wed, 2023-07-05 at 18:52 -0400, Eric Snowberg wrote:
> Commit 273df864cf746 ("ima: Check against blacklisted hashes for files with
> modsig") introduced an appraise_flag option for referencing the blacklist
> keyring. Any matching binary found on this keyring fails signature
> validation. This flag only works with module appended signatures.
>
> An important part of a PKI infrastructure is to have the ability to do
> revocation at a later time should a vulnerability be found. Expand the
> revocation flag usage to all appraisal functions. The flag is now
> enabled by default. Setting the flag with an IMA policy has been
> deprecated. Without a revocation capability like this in place, only
> authenticity can be maintained. With this change, integrity can now be
> achieved with digital signature based IMA appraisal.
>
> Signed-off-by: Eric Snowberg <eric.snowberg at oracle.com>
Thanks, Eric. Other than including "appraise_flag=check_blacklist"
when displaying the measurement list, it looks good.
--
thanks,
Mimi
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