CVE-2020-25632
grub2: Use-after-free in rmmod command
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Se encontró un fallo en grub2 en versiones anteriores a 2.06. La implementación de rmmod permite la descarga de un módulo usado como dependencia sin comprobar si algún otro módulo dependiente todavía está cargado, lo que conlleva a un escenario de uso de la memoria previamente liberada. Esto podría permitir una ejecución de código arbitraria o una omisión de las protecciones de Secure Boot. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, así como la disponibilidad del sistema
A flaw was found in grub2. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-09-16 CVE Reserved
- 2021-03-03 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
References (5)
URL | Tag | Source |
---|---|---|
https://security.netapp.com/advisory/ntap-20220325-0001 | Third Party Advisory |
URL | Date | SRC |
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URL | Date | SRC |
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https://bugzilla.redhat.com/show_bug.cgi?id=1879577 | 2021-09-28 |
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" | < 2.06 Search vendor "Gnu" for product "Grub2" and version " < 2.06" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.2" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.3 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.3" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.4" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.7 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.7" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 8.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.2" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.6" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus" | 7.7 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.7" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus" | 8.1 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "8.1" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 7.4 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.4" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.6" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 7.7 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.7" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 8.2 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.2" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
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Netapp Search vendor "Netapp" | Ontap Select Deploy Administration Utility Search vendor "Netapp" for product "Ontap Select Deploy Administration Utility" | - | - |
Affected
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