grub2
En bref
- Source
- NVD
- EPSS
- EPSS 1.74 % · centile 78 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- redhat
- Statut NVD
- Modified
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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.
Faiblesses (CWE)
- CWE-184 — Liste d'entrées interdites incomplète
Références
- https://bugzilla.redhat.com/show_bug.cgi?id=1873150
- https://access.redhat.com/security/vulnerabilities/RHSB-2021-003
- https://security.netapp.com/advisory/ntap-20210416-0004/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
- https://security.gentoo.org/glsa/202104-05
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 6.2 | AV:L/AC:H/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2020-6512
- GCVE · GCVE-0-2020-14372
Avis du CERT-FR
- CERTFR-2021-AVI-589 — Multiples vulnérabilités dans Juniper Junos Space Log Collector · cert.ssi.gouv.fr
- CERTFR-2021-AVI-579 — Multiples vulnérabilités dans IBM QRadar · cert.ssi.gouv.fr
- CERTFR-2021-AVI-172 — Multiples vulnérabilités dans GRUB · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*< 2.06cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:8.1:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| grub2 | affected grub 2.06 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |