Rapid7 Vulnerability & Exploit Database

Alma Linux: CVE-2022-28735: Important: grub2, mokutil, shim, and shim-unsigned-x64 security update (Multiple Advisories)

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Alma Linux: CVE-2022-28735: Important: grub2, mokutil, shim, and shim-unsigned-x64 security update (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
06/16/2022
Created
08/29/2022
Added
08/24/2022
Modified
12/01/2023

Description

The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.

Solution(s)

  • alma-upgrade-grub2-common
  • alma-upgrade-grub2-efi-aa64
  • alma-upgrade-grub2-efi-aa64-cdboot
  • alma-upgrade-grub2-efi-aa64-modules
  • alma-upgrade-grub2-efi-x64
  • alma-upgrade-grub2-efi-x64-cdboot
  • alma-upgrade-grub2-efi-x64-modules
  • alma-upgrade-grub2-pc
  • alma-upgrade-grub2-pc-modules
  • alma-upgrade-grub2-ppc64le
  • alma-upgrade-grub2-ppc64le-modules
  • alma-upgrade-grub2-tools
  • alma-upgrade-grub2-tools-efi
  • alma-upgrade-grub2-tools-extra
  • alma-upgrade-grub2-tools-minimal
  • alma-upgrade-shim-aa64
  • alma-upgrade-shim-unsigned-x64
  • alma-upgrade-shim-x64

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