CVE-2020-14372
moderate-risk
Published 2021-03-03
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.
Do I need to act?
~
1.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
LOCAL
/ HIGH complexity
Affected Products (20)
Affected Vendors
References (10)
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1873150
Third Party Advisory
https://security.gentoo.org/glsa/202104-05
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210416-0004/
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1873150
Third Party Advisory
https://security.gentoo.org/glsa/202104-05
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210416-0004/
45
/ 100
moderate-risk
Severity
20/34 · Moderate
Exploitability
5/34 · Minimal
Exposure
20/34 · Moderate