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CVE-2024-52878

Estado: AnalizadaAlta (7.5)—

An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, VariableServicesSetVariable () can be called by gRT_>SetVariable () or the SmmSetSensitiveVariable () or SmmInternalSetVariable () from SMM. In VariableServicesSetVariable (), it uses StrSize () to get variable name size, uses StrLen () to get variable name length and uses StrCmp () to compare strings. These actions may cause a buffer over-read.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector AV:N/PR:N permite explotación remota sin privilegios (T1190). CWE-126 (buffer over-read) en VariableServicesSetVariable permite lectura de memoria (T1005) con acceso a datos sensibles del firmware.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network TrafficApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Insyde — Insydeh2o

CWE

Referencias

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          "version": "2.0.3",
          "timestamp": "2025-05-19T19:54:38.507521Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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  "published": "2025-05-15T16:15:32.897",
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      "url": "https://www.insyde.com/security-pledge",
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      "value": "An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, VariableServicesSetVariable () can be called by gRT_>SetVariable () or the SmmSetSensitiveVariable () or SmmInternalSetVariable () from SMM. In VariableServicesSetVariable (), it uses StrSize () to get variable name size, uses StrLen () to get variable name length and uses StrCmp () to compare strings. These actions may cause a buffer over-read."
    },
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      "value": "Se detectó un problema en Insyde InsydeH2O con kernel 5.2 anterior a la versión 05.29.50, kernel 5.3 anterior a la versión 05.38.50, kernel 5.4 anterior a la versión 05.46.50, kernel 5.5 anterior a la versión 05.54.50, kernel 5.6 anterior a la versión 05.61.50 y kernel 5.7 anterior a la versión 05.70.50. En el controlador VariableRuntimeDxe, se puede llamar a VariableServicesSetVariable() mediante gRT_>SetVariable(), SmmSetSensitiveVariable() o SmmInternalSetVariable() desde SMM. En VariableServicesSetVariable(), se utiliza StrSize() para obtener el tamaño del nombre de la variable, StrLen() para obtener la longitud del nombre de la variable y StrCmp() para comparar cadenas. Estas acciones pueden provocar una sobrelectura del búfer."
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  "lastModified": "2026-06-17T08:07:47.467",
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