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CVE-2024-11477

Estado: ModificadaAlta (7.8)—

7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the implementation of Zstandard decompression. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24346.

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 CVSS AV:L + UI:R indica explotación en cliente (T1203): abrir archivo 7z malformado. Integer underflow en descompresión Zstandard permite ejecución de código arbitrario (T1059) en contexto del proceso.

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

7-zip — 7-zip

CWE

Referencias

JSON original (NVD)

Mostrar
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  "published": "2024-11-22T21:15:08.613",
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      "value": "7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.\n\nThe specific flaw exists within the implementation of Zstandard decompression. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24346."
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      "lang": "es",
      "value": "Vulnerabilidad de ejecución remota de código por desbordamiento de enteros en la descompresión Zstandard de 7-Zip. Esta vulnerabilidad permite a atacantes remotos ejecutar código arbitrario en las instalaciones afectadas de 7-Zip. Se requiere la interacción con esta librería para explotar esta vulnerabilidad, pero los vectores de ataque pueden variar según la implementación. La falla específica existe dentro de la implementación de la descompresión Zstandard. El problema es el resultado de la falta de una validación adecuada de los datos proporcionados por el usuario, lo que puede provocar un desbordamiento de enteros antes de escribir en la memoria. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual. Era ZDI-CAN-24346."
    }
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  "lastModified": "2026-06-17T06:57:48.637",
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