GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.
CVSS Details
- CVSS 3.1 Base Score: 6.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade grub | Aug 22, 2024 | Jul 29, 2020 |
| Centos_linux | — | Upgrade shim-x64Upgrade shim-unsigned-x64Upgrade grub2-debuginfoUpgrade grub2-pcUpgrade fwupdate-develUpgrade mokutil-debuginfoUpgrade grub2-efi-ia32Upgrade grub2-tools-extra-debuginfoUpgrade fwupd-debuginfoUpgrade grub2-ppc64le-modulesUpgrade fwupd-debugsourceUpgrade grub2-tools-efiUpgrade shim-ia32Upgrade fwupdate-libsUpgrade fwupdUpgrade grub2-efi-x64-cdbootUpgrade fwupdate-debuginfoUpgrade grub2-pc-modulesUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-ppc64-modulesUpgrade grub2-tools-extraUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-x64Upgrade fwupdate-efiUpgrade fwupdateUpgrade grub2-tools-debuginfoUpgrade grub2-efi-x64-modulesUpgrade grub2-toolsUpgrade shim-unsigned-ia32Upgrade grub2-tools-efi-debuginfoUpgrade grub2-ppc-modulesUpgrade grub2-debugsourceUpgrade grub2-efi-aa64-modulesUpgrade grub2-commonUpgrade grub2-efi-ia32-modulesUpgrade grub2Upgrade mokutilUpgrade grub2-tools-minimal | Jul 30, 2020 | Jul 29, 2020 |
| Gentoo Linux | — | Upgrade sys-devel/grub. | May 3, 2021 | Jul 29, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade grub2-efi-aa64-modulesUpgrade grub2-efi-aa64Upgrade grub2-tools-extraUpgrade grub2-toolsUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-cdbootUpgrade grub2-common | Aug 31, 2020 | Jul 29, 2020 |
| Huawei Euleros 2_0_sp9 | — | Upgrade grub2-tools-extraUpgrade grub2-commonUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-x64Upgrade grub2-tools-efiUpgrade grub2-toolsUpgrade grub2-pc-modulesUpgrade grub2-tools-minimalUpgrade grub2-pc | Jan 28, 2022 | Jul 29, 2020 |
| Oracle_linux | — | Upgrade grub2-efi-x64-modulesUpgrade grub2-tools-efiUpgrade grub2-commonUpgrade grub2-efi-ia32-cdbootUpgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-modulesUpgrade grub2Upgrade grub2-efi-ia32Upgrade grub2-efi-ia32-modulesUpgrade grub2-efi-aa64Upgrade grub2-efi-aa64-cdbootUpgrade grub2-pcUpgrade grub2-toolsUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-x64Upgrade grub2-pc-modules | Jul 30, 2020 | Jul 29, 2020 |
| Redhat_linux | — | Upgrade grub2-efi-x64-modulesUpgrade fwupd-debugsourceUpgrade grub2-efi-ia32-modulesUpgrade grub2-pcUpgrade grub2-pc-modulesUpgrade grub2-ppc64le-modulesUpgrade grub2Upgrade shim-unsigned-ia32Upgrade mokutil-debuginfoUpgrade grub2-efi-x64Upgrade grub2-tools-minimal-debuginfoUpgrade shim-unsigned-x64Upgrade grub2-commonUpgrade shim-unsigned-ia32-debuginfoUpgrade fwupdate-develUpgrade grub2-efi-x64-cdbootUpgrade fwupdUpgrade fwupdate-debuginfoUpgrade fwupdateUpgrade fwupdate-libsUpgrade grub2-debuginfoUpgrade grub2-tools-extra-debuginfoUpgrade shim-unsigned-aa64-debuginfoUpgrade grub2-efi-ia32-cdbootUpgrade mokutilUpgrade grub2-tools-minimalUpgrade grub2-tools-efiUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-ia32Upgrade shim-x64Upgrade fwupdate-efiUpgrade grub2-ppc64-modulesUpgrade grub2-debugsourceUpgrade shim-unsigned-x64-debuginfoUpgrade grub2-ppc-modulesUpgrade grub2-tools-debuginfoUpgrade fwupd-debuginfoUpgrade grub2-tools-extraUpgrade shim-ia32Upgrade grub2-tools-efi-debuginfoUpgrade grub2-tools | Jul 30, 2020 | Jul 29, 2020 |
| Suse | — | Upgrade grub2-i386-pcUpgrade grub2-x86_64-efiUpgrade grub2-powerpc-ieee1275Upgrade grub2-arm64-efiUpgrade grub2-s390x-emuUpgrade grub2-systemd-sleep-pluginUpgrade grub2Upgrade grub2-i386-efiUpgrade grub2-x86_64-efi-debugUpgrade grub2-i386-efi-debugUpgrade grub2-branding-upstreamUpgrade grub2-i386-pc-debugUpgrade grub2-i386-xenUpgrade grub2-snapper-pluginUpgrade grub2-x86_64-xen | Aug 27, 2020 | Jul 29, 2020 |
| Ubuntu | — | Upgrade grub-efi-ia32-binUpgrade grub-efi-arm64-signedUpgrade grub-efi-arm64-binUpgrade grub-efi-arm-binUpgrade grub-efi-amd64-signedUpgrade grub-efi-amd64-bin | Aug 5, 2020 | Jul 29, 2020 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jul 29, 2020 |
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