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.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-4867-1 | grub2 security update |
EUVD |
EUVD-2020-6512 | 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. |
Ubuntu USN |
USN-4992-1 | GRUB 2 vulnerabilities |
References
History
Sun, 13 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
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epss
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-04T12:46:33.294Z
Reserved: 2020-06-17T00:00:00.000Z
Link: CVE-2020-14372
No data.
Status : Modified
Published: 2021-03-03T17:15:11.583
Modified: 2024-11-21T05:03:07.000
Link: CVE-2020-14372
OpenCVE Enrichment
No data.
Weaknesses
Debian DSA
EUVD
Ubuntu USN