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 | alpine-linux-upgrade-grub | Aug 22, 2024 | Jul 29, 2020 | |
| Centos_linux | — | centos-upgrade-fwupdcentos-upgrade-fwupd-debuginfocentos-upgrade-fwupd-debugsourcecentos-upgrade-fwupdatecentos-upgrade-fwupdate-debuginfocentos-upgrade-fwupdate-develcentos-upgrade-fwupdate-eficentos-upgrade-fwupdate-libscentos-upgrade-grub2centos-upgrade-grub2-commoncentos-upgrade-grub2-debuginfocentos-upgrade-grub2-debugsourcecentos-upgrade-grub2-efi-aa64-modulescentos-upgrade-grub2-efi-ia32centos-upgrade-grub2-efi-ia32-cdbootcentos-upgrade-grub2-efi-ia32-modulescentos-upgrade-grub2-efi-x64centos-upgrade-grub2-efi-x64-cdbootcentos-upgrade-grub2-efi-x64-modulescentos-upgrade-grub2-pccentos-upgrade-grub2-pc-modulescentos-upgrade-grub2-ppc-modulescentos-upgrade-grub2-ppc64-modulescentos-upgrade-grub2-ppc64le-modulescentos-upgrade-grub2-toolscentos-upgrade-grub2-tools-debuginfocentos-upgrade-grub2-tools-eficentos-upgrade-grub2-tools-efi-debuginfocentos-upgrade-grub2-tools-extracentos-upgrade-grub2-tools-extra-debuginfocentos-upgrade-grub2-tools-minimalcentos-upgrade-grub2-tools-minimal-debuginfocentos-upgrade-mokutilcentos-upgrade-mokutil-debuginfocentos-upgrade-shim-ia32centos-upgrade-shim-unsigned-ia32centos-upgrade-shim-unsigned-x64centos-upgrade-shim-x64 | Jul 30, 2020 | Jul 29, 2020 |
| Gentoo Linux | gentoo-linux-upgrade-sys-devel-grub | May 3, 2021 | Jul 29, 2020 | |
| Huawei Euleros 2_0_sp8 | huawei-euleros-2_0_sp8-upgrade-grub2-commonhuawei-euleros-2_0_sp8-upgrade-grub2-efi-aa64huawei-euleros-2_0_sp8-upgrade-grub2-efi-aa64-cdboothuawei-euleros-2_0_sp8-upgrade-grub2-efi-aa64-moduleshuawei-euleros-2_0_sp8-upgrade-grub2-toolshuawei-euleros-2_0_sp8-upgrade-grub2-tools-extrahuawei-euleros-2_0_sp8-upgrade-grub2-tools-minimal | Aug 31, 2020 | Jul 29, 2020 | |
| Huawei Euleros 2_0_sp9 | huawei-euleros-2_0_sp9-upgrade-grub2-commonhuawei-euleros-2_0_sp9-upgrade-grub2-efi-x64huawei-euleros-2_0_sp9-upgrade-grub2-efi-x64-moduleshuawei-euleros-2_0_sp9-upgrade-grub2-pchuawei-euleros-2_0_sp9-upgrade-grub2-pc-moduleshuawei-euleros-2_0_sp9-upgrade-grub2-toolshuawei-euleros-2_0_sp9-upgrade-grub2-tools-efihuawei-euleros-2_0_sp9-upgrade-grub2-tools-extrahuawei-euleros-2_0_sp9-upgrade-grub2-tools-minimal | Jan 28, 2022 | Jul 29, 2020 | |
| Oracle_linux | — | oracle-linux-upgrade-grub2oracle-linux-upgrade-grub2-commonoracle-linux-upgrade-grub2-efi-aa64oracle-linux-upgrade-grub2-efi-aa64-cdbootoracle-linux-upgrade-grub2-efi-aa64-modulesoracle-linux-upgrade-grub2-efi-ia32oracle-linux-upgrade-grub2-efi-ia32-cdbootoracle-linux-upgrade-grub2-efi-ia32-modulesoracle-linux-upgrade-grub2-efi-x64oracle-linux-upgrade-grub2-efi-x64-cdbootoracle-linux-upgrade-grub2-efi-x64-modulesoracle-linux-upgrade-grub2-pcoracle-linux-upgrade-grub2-pc-modulesoracle-linux-upgrade-grub2-toolsoracle-linux-upgrade-grub2-tools-efioracle-linux-upgrade-grub2-tools-extraoracle-linux-upgrade-grub2-tools-minimal | Jul 30, 2020 | Jul 29, 2020 |
| Redhat_linux | redhat-upgrade-fwupdredhat-upgrade-fwupd-debuginforedhat-upgrade-fwupd-debugsourceredhat-upgrade-fwupdateredhat-upgrade-fwupdate-debuginforedhat-upgrade-fwupdate-develredhat-upgrade-fwupdate-efiredhat-upgrade-fwupdate-libsredhat-upgrade-grub2redhat-upgrade-grub2-commonredhat-upgrade-grub2-debuginforedhat-upgrade-grub2-debugsourceredhat-upgrade-grub2-efi-aa64-modulesredhat-upgrade-grub2-efi-ia32redhat-upgrade-grub2-efi-ia32-cdbootredhat-upgrade-grub2-efi-ia32-modulesredhat-upgrade-grub2-efi-x64redhat-upgrade-grub2-efi-x64-cdbootredhat-upgrade-grub2-efi-x64-modulesredhat-upgrade-grub2-pcredhat-upgrade-grub2-pc-modulesredhat-upgrade-grub2-ppc-modulesredhat-upgrade-grub2-ppc64-modulesredhat-upgrade-grub2-ppc64le-modulesredhat-upgrade-grub2-toolsredhat-upgrade-grub2-tools-debuginforedhat-upgrade-grub2-tools-efiredhat-upgrade-grub2-tools-efi-debuginforedhat-upgrade-grub2-tools-extraredhat-upgrade-grub2-tools-extra-debuginforedhat-upgrade-grub2-tools-minimalredhat-upgrade-grub2-tools-minimal-debuginforedhat-upgrade-mokutilredhat-upgrade-mokutil-debuginforedhat-upgrade-shim-ia32redhat-upgrade-shim-unsigned-aa64-debuginforedhat-upgrade-shim-unsigned-ia32redhat-upgrade-shim-unsigned-ia32-debuginforedhat-upgrade-shim-unsigned-x64redhat-upgrade-shim-unsigned-x64-debuginforedhat-upgrade-shim-x64 | Jul 30, 2020 | Jul 29, 2020 | |
| Suse | — | suse-upgrade-grub2suse-upgrade-grub2-arm64-efisuse-upgrade-grub2-branding-upstreamsuse-upgrade-grub2-i386-efisuse-upgrade-grub2-i386-efi-debugsuse-upgrade-grub2-i386-pcsuse-upgrade-grub2-i386-pc-debugsuse-upgrade-grub2-i386-xensuse-upgrade-grub2-powerpc-ieee1275suse-upgrade-grub2-s390x-emususe-upgrade-grub2-snapper-pluginsuse-upgrade-grub2-systemd-sleep-pluginsuse-upgrade-grub2-x86_64-efisuse-upgrade-grub2-x86_64-efi-debugsuse-upgrade-grub2-x86_64-xen | Aug 27, 2020 | Jul 29, 2020 |
| Ubuntu | ubuntu-upgrade-grub-efi-amd64-binubuntu-upgrade-grub-efi-amd64-signedubuntu-upgrade-grub-efi-arm-binubuntu-upgrade-grub-efi-arm64-binubuntu-upgrade-grub-efi-arm64-signedubuntu-upgrade-grub-efi-ia32-bin | Aug 5, 2020 | Jul 29, 2020 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Jul 29, 2020 |
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