[Bug 1776996] Re: secureboot-db out of date, missing revocations from Aug 2016

[Launchpad Bug Tracker]

This bug was fixed in the package secureboot-db - 1.2

---------------
secureboot-db (1.2) cosmic; urgency=medium

  * Apply the August 2016 dbx updates from Microsoft.  LP: #1776996.
  * chattr -i the EFI variables before trying to call sbkeysync, since the
    kernel now has these files immutable by default.

 -- Steve Langasek <steve.langasek at ubuntu.com>  Thu, 06 Sep 2018
23:35:21 -0700

** Changed in: secureboot-db (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1776996

Title:
  secureboot-db out of date, missing revocations from Aug 2016

Status in secureboot-db package in Ubuntu:
  Fix Released

Bug description:
  A signed variable update for secureboot dbx has been published by
  Microsoft to uefi.org; last updated 2016-08-11:
  http://www.uefi.org/sites/default/files/resources/dbxupdate.zip

  This file has not been included in the secureboot-db package in
  Ubuntu; so users who only boot Ubuntu and not Windows will not have
  these revocations applied, meaning their firmware will trust (and
  possibly be exploitable by) whatever binaries these revoked hashes
  correspond to.

  Separately, I seem in testing to be unable to apply this signed
  database update to my system using sbkeysync, despite having the
  Microsoft CA in my KEK.  So it's possible that sbkeysync doesn't work;
  we may need to either fix it, or switch to other code that does work,
  such as the dbxtool in Fedora.

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