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-aarch64Upgrade shim-x64Upgrade shim-aa64Upgrade shim-unsigned-x64Upgrade shim-ia32 | May 4, 2022 | Mar 3, 2021 |
| Alpine Linux | — | Upgrade grub | Aug 22, 2024 | Mar 3, 2021 |
| Amazon Linux Ami 2 | — | Upgrade grub2-efi-x64-modulesUpgrade grub2-efi-x64-ec2Upgrade grub2-tools-minimalUpgrade grub2-efi-x64Upgrade grub2-efi-aa64-cdbootUpgrade grub2-pc-modulesUpgrade grub2-pcUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-ec2Upgrade grub2-efi-aa64-modulesUpgrade grub2Upgrade grub2-commonUpgrade grub2-tools-efiUpgrade grub2-efi-aa64Upgrade grub2-emuUpgrade grub2-efi-x64-cdbootUpgrade grub2-debuginfoUpgrade grub2-emu-modulesUpgrade grub2-tools | 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-tools-extraUpgrade grub2-tools-efiUpgrade grub2-efi-x64Upgrade grub2-tools-minimalUpgrade grub2-tools-minimal-debuginfoUpgrade fwupd-debugsourceUpgrade grub2-pc-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-efi-debuginfoUpgrade grub2-ppc64le-modulesUpgrade grub2-tools-extra-debuginfoUpgrade grub2-efi-x64-cdbootUpgrade shim-x64Upgrade grub2-efi-ia32Upgrade fwupd-tests-debuginfoUpgrade grub2-commonUpgrade grub2-efi-ia32-modulesUpgrade grub2-ppc-modulesUpgrade grub2-ppc64-modulesUpgrade grub2Upgrade shim-ia32Upgrade grub2-debuginfoUpgrade grub2-toolsUpgrade fwupdUpgrade grub2-debugsourceUpgrade grub2-pcUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-x64-modulesUpgrade grub2-tools-debuginfoUpgrade fwupd-debuginfo | 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-pcUpgrade grub2-tools-minimalUpgrade grub2Upgrade grub2-efi-x64Upgrade grub2-pc-modulesUpgrade grub2-tools-extraUpgrade grub2-toolsUpgrade grub2-common | Sep 16, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp3 | — | Upgrade grub2-pcUpgrade grub2-efi-x64-modulesUpgrade grub2-pc-modulesUpgrade grub2-tools-minimalUpgrade grub2Upgrade grub2-commonUpgrade grub2-efi-x64Upgrade grub2-tools-extraUpgrade grub2-efi-x64-cdbootUpgrade grub2-tools | Apr 30, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp5 | — | Upgrade grub2-toolsUpgrade grub2-tools-extraUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-ia32Upgrade grub2-commonUpgrade grub2Upgrade grub2-efi-ia32-cdbootUpgrade grub2-pcUpgrade grub2-efi-x64Upgrade grub2-tools-minimalUpgrade grub2-efi-x64-modulesUpgrade grub2-pc-modules | May 19, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade grub2-commonUpgrade grub2-toolsUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-aa64-cdbootUpgrade grub2-tools-extraUpgrade grub2-efi-aa64Upgrade grub2-tools-minimal | May 18, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp9 | — | Upgrade grub2-commonUpgrade grub2-toolsUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-aa64Upgrade grub2-tools-minimalUpgrade grub2-tools-extra | Jun 2, 2021 | Mar 3, 2021 |
| Oracle_linux | — | Upgrade grub2-pc-modulesUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-cdbootUpgrade grub2Upgrade grub2-tools-minimalUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-x64Upgrade grub2-efi-ia32Upgrade grub2-tools-efiUpgrade grub2-pcUpgrade grub2-commonUpgrade grub2-toolsUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-ia32-modulesUpgrade grub2-efi-aa64Upgrade grub2-efi-x64-modulesUpgrade grub2-efi-ia32-cdboot | Mar 3, 2021 | Mar 2, 2021 |
| Redhat_linux | — | Upgrade grub2-tools-efiUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-efi-x64-cdbootUpgrade grub2-tools-extra-debuginfoUpgrade grub2-tools-minimalUpgrade fwupd-debuginfoUpgrade fwupd-tests-debuginfoUpgrade grub2-efi-x64Upgrade grub2-efi-ia32Upgrade grub2-debugsourceUpgrade grub2-tools-efi-debuginfoUpgrade fwupd-debugsourceUpgrade shim-x64Upgrade grub2-tools-extraUpgrade grub2-ppc64le-modulesUpgrade grub2-pc-modulesUpgrade fwupdUpgrade grub2Upgrade grub2-toolsUpgrade grub2-commonUpgrade shim-ia32Upgrade grub2-efi-ia32-modulesUpgrade grub2-debuginfoNo solution existsUpgrade grub2-ppc-modulesUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-aa64-modulesUpgrade shim-unsigned-x64Upgrade grub2-efi-x64-modulesUpgrade grub2-ppc64-modulesUpgrade grub2-pcUpgrade grub2-tools-debuginfo | Mar 3, 2021 | Mar 2, 2021 |
| Rocky_linux | — | Upgrade fwupd-debugsourceUpgrade fwupdUpgrade fwupd-debuginfo | Mar 12, 2024 | Mar 3, 2021 |
| Suse | — | Upgrade grub2Upgrade grub2-i386-efiUpgrade grub2-x86_64-efi-debugUpgrade grub2-systemd-sleep-pluginUpgrade grub2-x86_64-efiUpgrade grub2-snapper-pluginUpgrade grub2-branding-upstreamUpgrade grub2-arm64-efiUpgrade grub2-i386-pcUpgrade grub2-s390x-emuUpgrade grub2-i386-efi-debugUpgrade grub2-i386-xenUpgrade grub2-i386-pc-debugUpgrade grub2-x86_64-xenUpgrade grub2-powerpc-ieee1275 | 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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