A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS Details
- CVSS 3.1 Base Score: 8.2
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade shim-unsigned-x64Upgrade shim-ia32Upgrade shim-unsigned-aarch64Upgrade shim-x64Upgrade shim-aa64 | May 4, 2022 | Mar 3, 2021 |
| Alpine Linux | — | Upgrade grub | Aug 22, 2024 | Mar 3, 2021 |
| Amazon Linux Ami 2 | — | Upgrade grub2-debuginfoUpgrade grub2-emuUpgrade grub2-toolsUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-aa64Upgrade grub2-emu-modulesUpgrade grub2-tools-efiUpgrade grub2-efi-x64-ec2Upgrade grub2-pcUpgrade grub2-commonUpgrade grub2-efi-aa64-cdbootUpgrade grub2Upgrade grub2-efi-x64Upgrade grub2-efi-aa64-ec2Upgrade grub2-efi-x64-modulesUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-modulesUpgrade grub2-pc-modulesUpgrade grub2-tools-minimal | Jul 19, 2021 | Mar 3, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 3, 2021 |
| Centos_linux | — | Upgrade grub2-efi-x64Upgrade grub2-pc-modulesUpgrade fwupd-debugsourceUpgrade grub2-tools-extra-debuginfoUpgrade grub2-tools-extraUpgrade grub2-tools-efiUpgrade grub2-efi-ia32Upgrade fwupd-tests-debuginfoUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-tools-minimalUpgrade grub2-efi-x64-cdbootUpgrade shim-x64Upgrade grub2-tools-efi-debuginfoUpgrade grub2-ppc64le-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-ia32-modulesUpgrade shim-ia32Upgrade grub2Upgrade grub2-debuginfoUpgrade grub2-efi-ia32-cdbootUpgrade grub2-toolsUpgrade grub2-debugsourceUpgrade grub2-pcUpgrade grub2-ppc64-modulesUpgrade fwupdUpgrade grub2-commonUpgrade fwupd-debuginfoUpgrade grub2-tools-debuginfoUpgrade grub2-efi-x64-modulesUpgrade grub2-ppc-modules | Mar 3, 2021 | Mar 2, 2021 |
| Debian | — | Upgrade grub2 | Mar 4, 2021 | Mar 4, 2021 |
| Gentoo Linux | — | Upgrade sys-devel/grub. | May 3, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp2 | — | Upgrade grub2-toolsUpgrade grub2-commonUpgrade grub2-tools-extraUpgrade grub2-pcUpgrade grub2-pc-modulesUpgrade grub2Upgrade grub2-tools-minimalUpgrade grub2-efi-x64 | Sep 16, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp3 | — | Upgrade grub2-pcUpgrade grub2Upgrade grub2-efi-x64-modulesUpgrade grub2-commonUpgrade grub2-pc-modulesUpgrade grub2-tools-minimalUpgrade grub2-toolsUpgrade grub2-efi-x64Upgrade grub2-tools-extraUpgrade grub2-efi-x64-cdboot | Apr 30, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp5 | — | Upgrade grub2-efi-x64Upgrade grub2-pcUpgrade grub2-efi-ia32-cdbootUpgrade grub2-pc-modulesUpgrade grub2-efi-x64-modulesUpgrade grub2-tools-minimalUpgrade grub2Upgrade grub2-efi-ia32Upgrade grub2-tools-extraUpgrade grub2-efi-x64-cdbootUpgrade grub2-toolsUpgrade grub2-common | May 19, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade grub2-tools-minimalUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-aa64Upgrade grub2-efi-aa64-modulesUpgrade grub2-toolsUpgrade grub2-common | May 18, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp9 | — | Upgrade grub2-tools-minimalUpgrade grub2-tools-extraUpgrade grub2-efi-aa64Upgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools | Jun 2, 2021 | Mar 3, 2021 |
| Oracle_linux | — | Upgrade grub2-pcUpgrade grub2-efi-aa64Upgrade grub2-efi-aa64-modulesUpgrade grub2-efi-ia32-modulesUpgrade grub2-toolsUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-x64-modulesUpgrade grub2-commonUpgrade grub2-efi-x64Upgrade grub2-efi-x64-cdbootUpgrade grub2-efi-ia32Upgrade grub2-tools-efiUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-cdbootUpgrade grub2-pc-modulesUpgrade grub2-tools-extraUpgrade grub2 | Mar 3, 2021 | Mar 2, 2021 |
| Redhat_linux | — | Upgrade grub2-efi-x64-cdbootUpgrade grub2-tools-extra-debuginfoUpgrade fwupd-debuginfoUpgrade fwupd-tests-debuginfoUpgrade grub2-efi-ia32Upgrade grub2-tools-efiUpgrade grub2-pc-modulesUpgrade grub2-tools-extraUpgrade grub2-tools-efi-debuginfoUpgrade fwupd-debugsourceUpgrade grub2-tools-minimal-debuginfoUpgrade shim-x64Upgrade grub2-debugsourceUpgrade grub2-efi-x64Upgrade grub2-ppc64le-modulesUpgrade grub2-tools-minimalUpgrade grub2-tools-debuginfoUpgrade grub2-toolsUpgrade shim-ia32Upgrade shim-unsigned-x64Upgrade grub2-ppc-modulesUpgrade grub2-commonUpgrade grub2-debuginfoUpgrade fwupdNo solution existsUpgrade grub2-pcUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-x64-modulesUpgrade grub2Upgrade grub2-ppc64-modulesUpgrade grub2-efi-ia32-modules | Mar 3, 2021 | Mar 2, 2021 |
| Rocky_linux | — | Upgrade fwupd-debugsourceUpgrade fwupdUpgrade fwupd-debuginfo | Mar 12, 2024 | Mar 3, 2021 |
| Suse | — | Upgrade grub2-snapper-pluginUpgrade grub2-i386-pcUpgrade grub2-branding-upstreamUpgrade grub2-s390x-emuUpgrade grub2-i386-efiUpgrade grub2-x86_64-efi-debugUpgrade grub2-x86_64-efiUpgrade grub2-arm64-efiUpgrade grub2Upgrade grub2-systemd-sleep-pluginUpgrade grub2-i386-efi-debugUpgrade grub2-powerpc-ieee1275Upgrade grub2-x86_64-xenUpgrade grub2-i386-pc-debugUpgrade grub2-i386-xen | Mar 3, 2021 | Mar 2, 2021 |
| Ubuntu | — | Upgrade grub-efi-amd64-signedUpgrade grub-efi-arm64-signedUpgrade grub-efi-amd64-binUpgrade grub-efi-arm64-bin | Jun 18, 2021 | Mar 2, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Mar 3, 2021 |
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