CVE ID:	CVE-2020-15705
Description:	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.
Test IDs:	1.3.6.1.4.1.25623.1.0.853389   1.3.6.1.4.1.25623.1.1.2.2022.1008   1.3.6.1.4.1.25623.1.1.4.2020.2306.1   1.3.6.1.4.1.25623.1.1.2.2022.1028   1.3.6.1.4.1.25623.1.1.4.2020.2307.1   1.3.6.1.4.1.25623.1.0.853391   1.3.6.1.4.1.25623.1.1.4.2020.2308.1   1.3.6.1.4.1.25623.1.1.4.2020.2303.1   1.3.6.1.4.1.25623.1.1.4.2020.14461.1   1.3.6.1.4.1.25623.1.1.4.2020.2304.1   1.3.6.1.4.1.25623.1.1.2.2022.1194   1.3.6.1.4.1.25623.1.1.4.2020.2305.1
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2020-15705 https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ https://www.openwall.com/lists/oss-security/2020/07/29/3 Debian Security Information: https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot (Google Search) https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot https://security.gentoo.org/glsa/202104-05 http://www.openwall.com/lists/oss-security/2020/07/29/3 http://www.openwall.com/lists/oss-security/2021/03/02/3 http://www.openwall.com/lists/oss-security/2021/09/17/2 http://www.openwall.com/lists/oss-security/2021/09/17/4 http://www.openwall.com/lists/oss-security/2021/09/21/1 RedHat Security Advisories: https://access.redhat.com/security/vulnerabilities/grub2bootloader https://access.redhat.com/security/vulnerabilities/grub2bootloader SuSE Security Announcement: https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ (Google Search) https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ SuSE Security Announcement: https://www.suse.com/support/kb/doc/?id=000019673 (Google Search) https://www.suse.com/support/kb/doc/?id=000019673 SuSE Security Announcement: openSUSE-SU-2020:1280 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00067.html SuSE Security Announcement: openSUSE-SU-2020:1282 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00069.html https://usn.ubuntu.com/4432-1/ http://ubuntu.com/security/notices/USN-4432-1 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass