NetSight
IP …
high7.5

CVE-2020-14372

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.

Impact

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 products

VendorProductAffected versions
GnuGrub2
before 2.06
RedhatEnterprise Linux
Versions 7.0, 8.0
RedhatEnterprise Linux Server Aus
Versions 7.2, 7.3, 7.4, 7.6, 7.7, 8.2
RedhatEnterprise Linux Server Eus
Versions 7.6, 7.7, 8.1
RedhatEnterprise Linux Server Tus
Versions 7.4, 7.6, 7.7, 8.2
RedhatEnterprise Linux Workstation
Version 7.0
FedoraprojectFedora
Versions 33, 34
NetappCloud Backup
All versions
NetappOntap Select Deploy Administration Utility
All versions

Weakness classification

CWE-184

References