CVE-2021-3418
Summary
| CVE | CVE-2021-3418 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-03-15 22:15:00 UTC |
| Updated | 2021-03-22 16:45:00 UTC |
| Description | If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism. |
Risk And Classification
Problem Types: CWE-281
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| 1933757 – (CVE-2021-3418) CVE-2021-3418 grub2: grub 2.05 reintroduced CVE-2020-15705 | MISC | bugzilla.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 502730 Alpine Linux Security Update for grub
- 900055 CBL-Mariner Linux Security Update for grub2 2.06~rc1
- 901831 Common Base Linux Mariner (CBL-Mariner) Security Update for grub2 (6467-1)
- 903585 Common Base Linux Mariner (CBL-Mariner) Security Update for grub2 (3977)
- 905842 Common Base Linux Mariner (CBL-Mariner) Security Update for grub2 (3977-1)
- 906291 Common Base Linux Mariner (CBL-Mariner) Security Update for grub2 (6467-2)