CVE-2023-4001
Grub2: bypass the grub password protection feature
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.
Se encontró un fallo de omisión de autenticación en GRUB debido a la forma en que GRUB usa el UUID de un dispositivo para buscar el archivo de configuración que contiene el hash de contraseña para la función de protección de contraseña de GRUB. Un atacante capaz de conectar una unidad externa, como una memoria USB que contenga un sistema de archivos con un UUID duplicado (el mismo que en el sistema de archivos "/boot/") puede omitir la función de protección con contraseña GRUB en los sistemas UEFI, que enumeran unidades extraíbles. antes que los no removibles. Este problema se introdujo en un parche posterior en la versión de grub2 de Red Hat y no afecta el paquete anterior.
CVSS Scores
SSVC
- Decision:Track*
Timeline
- 2023-07-28 CVE Reserved
- 2024-01-15 CVE Published
- 2024-09-17 EPSS Updated
- 2024-11-13 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-290: Authentication Bypass by Spoofing
CAPEC
References (10)
URL | Date | SRC |
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URL | Date | SRC |
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URL | Date | SRC |
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https://access.redhat.com/errata/RHSA-2024:0437 | 2024-02-16 | |
https://access.redhat.com/errata/RHSA-2024:0456 | 2024-02-16 | |
https://access.redhat.com/errata/RHSA-2024:0468 | 2024-02-16 | |
https://access.redhat.com/security/cve/CVE-2023-4001 | 2024-01-25 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2224951 | 2024-01-25 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Gnu Search vendor "Gnu" | Grub2 Search vendor "Gnu" for product "Grub2" | - | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 38 Search vendor "Fedoraproject" for product "Fedora" and version "38" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 39 Search vendor "Fedoraproject" for product "Fedora" and version "39" | - |
Affected
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