2020-07-29 20:15:00 2020-08-29 20:15:00

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.

Vector

LOCAL

Complexity

MEDIUM

Authentication

NONE

Confidentiality

PARTIAL

Integrity

PARTIAL

Availability

PARTIAL
Microsoft Windows server 2019 - * * * (not an official CPE) Microsoft Windows server 2016 2004 * * * (not an official CPE) Microsoft Windows server 2016 1909 * * * (not an official CPE) Microsoft Windows server 2016 1903 * * * (not an official CPE) Microsoft Windows server 2016 - * * * (not an official CPE) Microsoft Windows server 2012 R2 * * * (not an official CPE) Microsoft Windows server 2012 - * * * (not an official CPE) Microsoft Windows rt 8.1 - * * * (not an official CPE) Microsoft Windows 8.1 - * * * (not an official CPE) Microsoft Windows 10 2004 * * * (not an official CPE) Microsoft Windows 10 1909 * * * (not an official CPE) Microsoft Windows 10 1903 * * * (not an official CPE) Microsoft Windows 10 1809 * * * (not an official CPE) Microsoft Windows 10 1803 * * * (not an official CPE) Microsoft Windows 10 1709 * * * (not an official CPE) Microsoft Windows 10 1607 * * * (not an official CPE) Microsoft Windows 10 - * * * (not an official CPE) Suse Suse linux enterprise server 15 * * * (not an official CPE) Suse Suse linux enterprise server 12 * * * (not an official CPE) Suse Suse linux enterprise server 11 * * * (not an official CPE) Redhat Enterprise linux 8.0 * * * (not an official CPE) Redhat Enterprise linux 7.0 * * * (not an official CPE) Debian Debian linux 10.0 * * * (not an official CPE) Canonical Ubuntu linux 20.04 * * * (not an official CPE) Canonical Ubuntu linux 18.04 * * * (not an official CPE) Canonical Ubuntu linux 16.04 * * * (not an official CPE) Canonical Ubuntu linux 14.04 * * * (not an official CPE)