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CVE-2020-14372

Description

A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.


Affected Software


CPE Name Name Version
gnu:grub2 gnu grub2 2.06
redhat:enterprise_linux_server_aus redhat enterprise linux server aus 7.2
redhat:enterprise_linux_workstation redhat enterprise linux workstation 7.0
redhat:enterprise_linux redhat enterprise linux 7.0
redhat:enterprise_linux_server_aus redhat enterprise linux server aus 7.3
redhat:enterprise_linux_server_aus redhat enterprise linux server aus 7.4
redhat:enterprise_linux_server_tus redhat enterprise linux server tus 7.4
redhat:enterprise_linux_server_tus redhat enterprise linux server tus 7.6
redhat:enterprise_linux_server_eus redhat enterprise linux server eus 7.6
redhat:enterprise_linux_server_aus redhat enterprise linux server aus 7.6
redhat:enterprise_linux redhat enterprise linux 8.0
redhat:enterprise_linux_server_eus redhat enterprise linux server eus 7.7
redhat:enterprise_linux_server_aus redhat enterprise linux server aus 7.7
redhat:enterprise_linux_server_tus redhat enterprise linux server tus 7.7
redhat:enterprise_linux_server_eus redhat enterprise linux server eus 8.1
redhat:enterprise_linux_server_tus redhat enterprise linux server tus 8.2
redhat:enterprise_linux_server_aus redhat enterprise linux server aus 8.2
fedoraproject:fedora fedoraproject fedora 33
fedoraproject:fedora fedoraproject fedora 34
netapp:cloud_backup netapp cloud backup -
netapp:ontap_select_deploy_administration_utility netapp ontap select deploy administration utility -

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