CVE-2021-35973

NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the &currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).

NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the &currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).

Los dispositivos NETGEAR WAC104 versiones anteriores a 1.0.4.15 están afectados por una vulnerabilidad de omisión de autenticación en /usr/sbin/mini_httpd, que permite a un atacante no autenticado invocar cualquier acción añadiendo la subcadena &currentsetting.htm a la consulta HTTP, un problema relacionado con CVE-2020-27866. Esto permite directamente al atacante cambiar la contraseña de la interfaz web, y eventualmente habilitar el modo de depuración (telnetd) y obtener un shell en el dispositivo como la cuenta de usuario limitado admin (sin embargo, la escalada a root es sencilla debido a los permisos débiles en el directorio /etc/)