CVE-2020-14372
CVE-2020-14372
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
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.
CVSS 7.5 · Alta · EPSS 1,7% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: system
Productos y versiones afectados
grub2
- Versiones
- grub 2.06: Afectada
Sin corrección publicada
grub2 Debian:12
- Intervalos de versiones afectados
- ECOSYSTEM: < 2.04-16
Actualiza a 2.04-16
grub2 Debian:13
- Intervalos de versiones afectados
- ECOSYSTEM: < 2.04-16
Actualiza a 2.04-16
grub2 Debian:14
- Intervalos de versiones afectados
- ECOSYSTEM: < 2.04-16
Actualiza a 2.04-16
grub2-signed Ubuntu:Pro:14.04:LTS
- Versiones
- 1.22
- 1.23
- 1.24
- 1.25
- 1.26
- 1.27
- 1.30
- 1.31
- 1.32
- 1.33
- 1.34
- 1.34.1
- 1.34.2
- 1.34.3
- 1.34.4
- 1.34.5
- 1.34.6
- 1.34.7
- 1.34.8
- 1.34.9
- 1.34.13
- 1.34.14
- 1.34.16
- 1.34.17
- 1.34.18
- 1.34.20
- 1.34.22
- 1.34.24
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
grub2-signed Ubuntu:18.04:LTS
- Versiones
- 1.85
- 1.86
- 1.87
- 1.89
- 1.91
- 1.92
- 1.93
- 1.93.1
- 1.93.2
- 1.93.3
- 1.93.4
- 1.93.5
- 1.93.7
- 1.93.8
- 1.93.10
- 1.93.11
- 1.93.13
- 1.93.14
- 1.93.15
- 1.93.16
- 1.93.18
- 1.93.19
- 1.93.20
- 1.93.21
- 1.93.22
- 1.93.24
- 1.167~18.04.1
- 1.167~18.04.3
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.167~18.04.5
Actualiza a 1.167~18.04.5
grub2-unsigned Ubuntu:18.04:LTS
- Versiones
- 2.04-1ubuntu44
- 2.04-1ubuntu44.1
- Intervalos de versiones afectados
- ECOSYSTEM: < 2.04-1ubuntu44.1.2
Actualiza a 2.04-1ubuntu44.1.2
grub2-signed Ubuntu:20.04:LTS
- Versiones
- 1.128
- 1.129
- 1.130
- 1.131
- 1.133
- 1.134
- 1.135
- 1.136
- 1.137
- 1.138
- 1.139
- 1.140
- 1.141
- 1.142
- 1.142.1
- 1.142.3
- 1.142.4
- 1.142.5
- 1.142.6
- 1.142.8
- 1.142.9
- 1.142.10
- 1.142.11
- 1.167
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.167.2
Actualiza a 1.167.2
grub2-unsigned Ubuntu:20.04:LTS
- Versiones
- 2.04-1ubuntu44
- Intervalos de versiones afectados
- ECOSYSTEM: < 2.04-1ubuntu44.2
Actualiza a 2.04-1ubuntu44.2
Fuentes originales
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2020-14372