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CVE-2024-51743

Estado: AnalizadaAlta (7.1)—

MarkUs is a web application for the submission and grading of student assignments. In versions prior to 2.4.8, an arbitrary file write vulnerability in the update/upload/create file methods in Controllers allows authenticated instructors to write arbitrary files to any location on the web server MarkUs is running on (depending on the permissions of the underlying filesystem). e.g. This can lead to a delayed remote code execution in case an attacker is able to write a Ruby file into the config/initializers/ subfolder of the Ruby on Rails application. MarkUs v2.4.8 has addressed this issue. No known workarounds are available at the application level aside from upgrading.

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.

Vulnerabilidad de escritura de ficheros arbitrarios en servicio web MarkUs que requiere autenticación (PR:L), explotable remotamente (AV:N). Permite escribir ficheros Ruby en config/initializers/ para RCE diferida (web shell T1505.003 y ejecución de código T1059).

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

Disable or Remove Feature or ProgramPrivileged Account ManagementVulnerability ScanningUser Account ManagementThreat Intelligence ProgramRestrict Web-Based Content

Tecnologías afectadas (1)

Markusproject — Markus

CWE

Referencias

JSON original (NVD)

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  "published": "2024-11-18T20:15:05.900",
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      "value": "MarkUs es una aplicación web para el envío y calificación de tareas de los estudiantes. En versiones anteriores a la 2.4.8, una vulnerabilidad de escritura de archivos arbitrarios en los métodos de actualización/carga/creación de archivos en los controladores permite a los instructores autenticados escribir archivos arbitrarios en cualquier ubicación del servidor web en el que se ejecuta MarkUs (según los permisos del sistema de archivos subyacente). Esto puede provocar una ejecución de código remoto retrasada en caso de que un atacante pueda escribir un archivo Ruby en la subcarpeta config/initializers/ de la aplicación Ruby on Rails. MarkUs v2.4.8 ha solucionado este problema. No hay workarounds disponibles a nivel de aplicación aparte de la actualización."
    }
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  "lastModified": "2026-06-17T08:06:13.973",
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