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.
References
Link | Resource |
---|---|
https://access.redhat.com/security/vulnerabilities/RHSB-2021-003 | Patch Third Party Advisory |
https://bugzilla.redhat.com/show_bug.cgi?id=1873150 | Issue Tracking Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | |
https://security.gentoo.org/glsa/202104-05 | Third Party Advisory |
https://security.netapp.com/advisory/ntap-20210416-0004/ | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2021-03-03T16:40:36
Updated: 2021-05-01T01:08:09
Reserved: 2020-06-17T00:00:00
Link: CVE-2020-14372
JSON object: View
NVD Information
Status : Modified
Published: 2021-03-03T17:15:11.583
Modified: 2023-11-07T03:17:11.843
Link: CVE-2020-14372
JSON object: View
Redhat Information
No data.
CWE