VULNERABILITY

Amazon Linux 2023: CVE-2022-28735: Important priority package update for grub2

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Amazon Linux 2023: CVE-2022-28735: Important priority package update for grub2

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
06/07/2022
Created
02/14/2025
Added
02/17/2025
Modified
02/17/2025

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. A flaw was found in grub2. The shim_lock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed.

Solution(s)

  • amazon-linux-2023-upgrade-grub2-common
  • amazon-linux-2023-upgrade-grub2-debuginfo
  • amazon-linux-2023-upgrade-grub2-debugsource
  • amazon-linux-2023-upgrade-grub2-efi-aa64
  • amazon-linux-2023-upgrade-grub2-efi-aa64-cdboot
  • amazon-linux-2023-upgrade-grub2-efi-aa64-ec2
  • amazon-linux-2023-upgrade-grub2-efi-aa64-modules
  • amazon-linux-2023-upgrade-grub2-efi-x64
  • amazon-linux-2023-upgrade-grub2-efi-x64-cdboot
  • amazon-linux-2023-upgrade-grub2-efi-x64-ec2
  • amazon-linux-2023-upgrade-grub2-efi-x64-modules
  • amazon-linux-2023-upgrade-grub2-emu
  • amazon-linux-2023-upgrade-grub2-emu-debuginfo
  • amazon-linux-2023-upgrade-grub2-emu-modules
  • amazon-linux-2023-upgrade-grub2-pc
  • amazon-linux-2023-upgrade-grub2-pc-modules
  • amazon-linux-2023-upgrade-grub2-tools
  • amazon-linux-2023-upgrade-grub2-tools-debuginfo
  • amazon-linux-2023-upgrade-grub2-tools-efi
  • amazon-linux-2023-upgrade-grub2-tools-efi-debuginfo
  • amazon-linux-2023-upgrade-grub2-tools-extra
  • amazon-linux-2023-upgrade-grub2-tools-extra-debuginfo
  • amazon-linux-2023-upgrade-grub2-tools-minimal
  • amazon-linux-2023-upgrade-grub2-tools-minimal-debuginfo

References

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