CVE - CVE-2020-15705

CVE-ID
CVE-2020-15705	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://security.netapp.com/advisory/ntap-20200731-0008/ CONFIRM:https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html URL:https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html CONFIRM:https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 URL:https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 CONFIRM:https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ URL:https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ CONFIRM:https://www.openwall.com/lists/oss-security/2020/07/29/3 URL:https://www.openwall.com/lists/oss-security/2020/07/29/3 DEBIAN:https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot URL:https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot GENTOO:GLSA-202104-05 URL:https://security.gentoo.org/glsa/202104-05 MLIST:[oss-security] 20200729 multiple secure boot grub2 and linux kernel vulnerabilities URL:http://www.openwall.com/lists/oss-security/2020/07/29/3 MLIST:[oss-security] 20210302 Multiple GRUB2 vulnerabilities URL:http://www.openwall.com/lists/oss-security/2021/03/02/3 MLIST:[oss-security] 20210916 Containers-optimized OS (COS) membership in the linux-distros list URL:http://www.openwall.com/lists/oss-security/2021/09/17/2 MLIST:[oss-security] 20210917 Re: Containers-optimized OS (COS) membership in the linux-distros list URL:http://www.openwall.com/lists/oss-security/2021/09/17/4 MLIST:[oss-security] 20210920 Re: Containers-optimized OS (COS) membership in the linux-distros list URL:http://www.openwall.com/lists/oss-security/2021/09/21/1 REDHAT:https://access.redhat.com/security/vulnerabilities/grub2bootloader URL:https://access.redhat.com/security/vulnerabilities/grub2bootloader SUSE:https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ URL:https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ SUSE:https://www.suse.com/support/kb/doc/?id=000019673 URL:https://www.suse.com/support/kb/doc/?id=000019673 SUSE:openSUSE-SU-2020:1280 URL:http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00067.html SUSE:openSUSE-SU-2020:1282 URL:http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00069.html UBUNTU:USN-4432-1 URL:https://usn.ubuntu.com/4432-1/ UBUNTU:http://ubuntu.com/security/notices/USN-4432-1 URL:http://ubuntu.com/security/notices/USN-4432-1 UBUNTU:https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass URL:https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass
Assigning CNA
Canonical Ltd.
Date Record Created
20200714	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20200714)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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