vulnerability
CentOS Linux: CVE-2020-14310: Moderate: grub2 security update (Multiple Advisories)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
4 | (AV:L/AC:L/Au:N/C:N/I:P/A:P) | Jul 29, 2020 | Jul 30, 2020 | May 25, 2023 |
Severity
4
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:P)
Published
Jul 29, 2020
Added
Jul 30, 2020
Modified
May 25, 2023
Description
There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.
Solution(s)
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
References

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