CVE-2020-15261

On Windows the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don't have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.

On Windows the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don't have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.

En Windows, Veyon Service versiones anteriores a 4.4.2, contiene una vulnerabilidad de ruta de servicio sin comillas, permitiendo a usuarios autenticados localmente con privilegios administrativos correr ejecutables maliciosos con privilegios de LocalSystem. Dado que los usuarios de Veyon (tanto estudiantes como profesores) generalmente no poseen privilegios administrativos, esta vulnerabilidad solo es peligrosa en configuraciones no seguras. El problema ha sido corregido en la versión 4.4.2. Como solución alternativa, la explotación de la vulnerabilidad puede ser evitada al revocar privilegios administrativos de todos los usuarios potencialmente no confiables