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 grub2-toolsUpgrade grub2-efi-ia32-cdbootUpgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-efi-ia32-modulesUpgrade grub2-debugsourceUpgrade grub2-ppc-modulesUpgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade fwupdateUpgrade fwupdate-efiUpgrade mokutilUpgrade grub2Upgrade shim-unsigned-ia32Upgrade grub2-ppc64-modulesUpgrade grub2-tools-efi-debuginfoUpgrade grub2-efi-x64Upgrade grub2-efi-x64-modulesUpgrade grub2-tools-debuginfoUpgrade grub2-ppc64le-modulesUpgrade fwupdate-debuginfoUpgrade grub2-tools-extra-debuginfoUpgrade grub2-tools-efiUpgrade fwupdUpgrade grub2-efi-x64-cdbootUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-pc-modulesUpgrade shim-ia32Upgrade fwupdate-libsUpgrade shim-unsigned-x64Upgrade shim-x64Upgrade grub2-efi-ia32Upgrade grub2-debuginfoUpgrade fwupd-debugsourceUpgrade fwupd-debuginfoUpgrade grub2-pcUpgrade mokutil-debuginfoUpgrade fwupdate-devel | 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-aa64Upgrade grub2-efi-aa64-modulesUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-cdbootUpgrade grub2-commonUpgrade grub2-toolsUpgrade grub2-tools-extra | Aug 31, 2020 | Jul 29, 2020 |
| Huawei Euleros 2_0_sp9 | — | Upgrade grub2-efi-x64-modulesUpgrade grub2-tools-extraUpgrade grub2-commonUpgrade grub2-pcUpgrade grub2-efi-x64Upgrade grub2-tools-efiUpgrade grub2-tools-minimalUpgrade grub2-toolsUpgrade grub2-pc-modules | Jan 28, 2022 | Jul 29, 2020 |
| Oracle_linux | — | Upgrade grub2-tools-minimalUpgrade grub2-efi-ia32-cdbootUpgrade grub2-tools-efiUpgrade grub2-tools-extraUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-commonUpgrade grub2-efi-ia32-modulesUpgrade grub2-pc-modulesUpgrade grub2-efi-aa64Upgrade grub2-toolsUpgrade grub2-efi-x64Upgrade grub2-efi-x64-cdbootUpgrade grub2-pcUpgrade grub2Upgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-ia32 | Jul 30, 2020 | Jul 29, 2020 |
| Redhat_linux | — | Upgrade grub2-debuginfoUpgrade fwupdate-debuginfoUpgrade fwupdateUpgrade shim-unsigned-ia32Upgrade grub2-pcUpgrade grub2-tools-minimal-debuginfoUpgrade fwupdate-libsUpgrade fwupd-debugsourceUpgrade grub2-efi-ia32-modulesUpgrade grub2Upgrade mokutil-debuginfoUpgrade grub2-efi-x64-modulesUpgrade grub2-commonUpgrade grub2-tools-extra-debuginfoUpgrade grub2-efi-x64-cdbootUpgrade fwupdUpgrade shim-unsigned-ia32-debuginfoUpgrade grub2-efi-x64Upgrade fwupdate-develUpgrade shim-unsigned-aa64-debuginfoUpgrade shim-unsigned-x64Upgrade grub2-pc-modulesUpgrade grub2-ppc64le-modulesUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-ia32Upgrade shim-x64Upgrade grub2-toolsUpgrade grub2-tools-minimalUpgrade fwupdate-efiUpgrade grub2-tools-efiUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-debuginfoUpgrade grub2-tools-efi-debuginfoUpgrade grub2-ppc-modulesUpgrade fwupd-debuginfoUpgrade grub2-tools-extraUpgrade mokutilUpgrade shim-ia32Upgrade grub2-ppc64-modulesUpgrade grub2-debugsourceUpgrade shim-unsigned-x64-debuginfo | Jul 30, 2020 | Jul 29, 2020 |
| Suse | — | Upgrade grub2-i386-pc-debugUpgrade grub2-branding-upstreamUpgrade grub2-x86_64-efi-debugUpgrade grub2-snapper-pluginUpgrade grub2-x86_64-xenUpgrade grub2-i386-efi-debugUpgrade grub2-i386-xenUpgrade grub2-x86_64-efiUpgrade grub2-i386-efiUpgrade grub2-arm64-efiUpgrade grub2-systemd-sleep-pluginUpgrade grub2-s390x-emuUpgrade grub2Upgrade grub2-i386-pcUpgrade grub2-powerpc-ieee1275 | Aug 27, 2020 | Jul 29, 2020 |
| Ubuntu | — | Upgrade grub-efi-arm64-binUpgrade grub-efi-arm64-signedUpgrade grub-efi-ia32-binUpgrade grub-efi-amd64-signedUpgrade grub-efi-arm-binUpgrade 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub