fkie_cve-2020-25632
Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:18
Severity ?
Summary
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.
References
Impacted products
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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.", }, { lang: "es", value: "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", }, ], id: "CVE-2020-25632", lastModified: "2024-11-21T05:18:17.340", metrics: { cvssMetricV2: [ { acInsufInfo: false, baseSeverity: "HIGH", cvssData: { accessComplexity: "LOW", accessVector: "LOCAL", authentication: "NONE", availabilityImpact: "COMPLETE", baseScore: 7.2, confidentialityImpact: "COMPLETE", integrityImpact: "COMPLETE", vectorString: "AV:L/AC:L/Au:N/C:C/I:C/A:C", version: "2.0", }, exploitabilityScore: 3.9, impactScore: 10, obtainAllPrivilege: false, obtainOtherPrivilege: false, obtainUserPrivilege: false, source: "nvd@nist.gov", type: "Primary", userInteractionRequired: false, }, ], cvssMetricV31: [ { cvssData: { attackComplexity: "LOW", attackVector: "LOCAL", availabilityImpact: "HIGH", baseScore: 8.2, baseSeverity: "HIGH", confidentialityImpact: "HIGH", integrityImpact: "HIGH", privilegesRequired: "HIGH", scope: "CHANGED", userInteraction: "NONE", vectorString: "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", version: "3.1", }, exploitabilityScore: 1.5, impactScore: 6, source: "nvd@nist.gov", type: "Primary", }, ], }, published: "2021-03-03T17:15:11.660", references: [ { source: "secalert@redhat.com", tags: [ "Issue Tracking", "Patch", "Third Party Advisory", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=1879577", }, { source: "secalert@redhat.com", url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/", }, { source: "secalert@redhat.com", tags: [ "Third Party Advisory", ], url: "https://security.gentoo.org/glsa/202104-05", }, { source: "secalert@redhat.com", tags: [ "Third Party Advisory", ], url: "https://security.netapp.com/advisory/ntap-20220325-0001/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Issue Tracking", "Patch", "Third Party Advisory", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=1879577", }, { source: "af854a3a-2127-422b-91ae-364da2661108", url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://security.gentoo.org/glsa/202104-05", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://security.netapp.com/advisory/ntap-20220325-0001/", }, ], sourceIdentifier: "secalert@redhat.com", vulnStatus: "Modified", weaknesses: [ { description: [ { lang: "en", value: "CWE-416", }, ], source: "secalert@redhat.com", type: "Secondary", }, { description: [ { lang: "en", value: "CWE-416", }, ], source: "nvd@nist.gov", type: "Primary", }, ], }
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Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.