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Alma Linux: CVE-2022-28737: Important: grub2, mokutil, shim, and shim-unsigned-x64 security update (Multiple Advisories)

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Alma Linux: CVE-2022-28737: 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
04/24/2024

Description

There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.

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

References

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