850535 – (CVE-2021-3695, CVE-2021-3696, CVE-2021-3697, CVE-2022-28733, CVE-2022-28734, CVE-2022-28735, CVE-2022-28736, CVE-2022-28737) <sys-boot/grub-2.06-r2: multiple vulnerabilities

Bug 850535 (CVE-2021-3695, CVE-2021-3696, CVE-2021-3697, CVE-2022-28733, CVE-2022-28734, CVE-2022-28735, CVE-2022-28736, CVE-2022-28737) - <sys-boot/grub-2.06-r2: multiple vulnerabilities

Summary: <sys-boot/grub-2.06-r2: multiple vulnerabilities

Status:	IN_PROGRESS

Alias:	CVE-2021-3695, CVE-2021-3696, CVE-2021-3697, CVE-2022-28733, CVE-2022-28734, CVE-2022-28735, CVE-2022-28736, CVE-2022-28737

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal major (vote)
Assignee:	Gentoo Security

URL:	https://lists.gnu.org/archive/html/gr...
Whiteboard:	A2 [stable]
Keywords:

Depends on:	850673
Blocks:
	Show dependency tree

Reported:	2022-06-07 19:33 UTC by John Helmert III
Modified:	2022-06-09 02:48 UTC (History)
CC List:	3 users (show)

See Also:
Package list:
Runtime testing required:	---

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Description John Helmert III archtester

2022-06-07 19:33:53 UTC

Details at URL. Note that:

"Full mitigation against all CVEs will require updated shim with latest SBAT
(Secure Boot Advanced Targeting) [2] data provided by distros and vendors.
This time UEFI revocation list (dbx) will not be used and revocation of broken
artifacts will be done with SBAT only. For information on how to apply the
latest SBAT revocations, please see mokutil(1). Vendor shims may explicitly
permit known older boot artifacts to boot."

So I suppose we need an update for sys-boot/shim, too?

Comment 1 Larry the Git Cow gentoo-dev

2022-06-08 01:05:24 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7bbb9e2ce52ffd701c05daa3752f1fe11ec72f27

commit 7bbb9e2ce52ffd701c05daa3752f1fe11ec72f27
Author:     Mike Gilbert <floppym@gentoo.org>
AuthorDate: 2022-06-08 01:02:45 +0000
Commit:     Mike Gilbert <floppym@gentoo.org>
CommitDate: 2022-06-08 01:02:45 +0000

    sys-boot/grub: backport many patches
    
    Bug: https://bugs.gentoo.org/850535
    Closes: https://github.com/gentoo/gentoo/pull/25629
    Signed-off-by: Mike Gilbert <floppym@gentoo.org>

 sys-boot/grub/Manifest            |   1 +
 sys-boot/grub/grub-2.06-r2.ebuild | 319 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 320 insertions(+)

Comment 2 John Helmert III archtester

2022-06-08 15:33:15 UTC

Thank you! Please stabilize when ready.

Comment 3 Mike Gilbert gentoo-dev

2022-06-09 00:20:54 UTC

(In reply to John Helmert III from comment #0)
> So I suppose we need an update for sys-boot/shim, too?

I doubt there are many (any?) Gentoo users that attempt to use "secure boot" via sys-boot/shim.