Disable X11 Forwarding for SSH

MediaNivel 1Automatizadasolaris

Descripción

The X11 Forwarding parameter defined within the /etc/ssh/sshd_config file specifies whether or not X11 Forwarding via SSH is enabled on the server: The Secure Shell service provides an encrypted 'tunnel' for the data traffic passing through it. As enabling X11Forwarding on the host can permit a malicious user to secretly open another X11 connection to another remote client during the session and perform unobtrusive activities such as keystroke monitoring, if the X11 services are not required for ... Audit: pattern match on /etc/ssh/sshd_config as described in the CIS audit procedure.

Cómo se verifica

Método de auditoría: Patrón de archivo

Archivo: /etc/ssh/sshd_config
Patrón: (?m)^X11Forwarding\s+no\b

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Perform the following to implement the recommended state: # cp /etc/ssh/sshd_config /etc/ssh/sshd_config.orig # awk '/^X11Forwarding / { $2 = "no" } { print }' /etc/ssh/sshd_config > /etc/ssh/sshd_config.CIS # mv /etc/ssh/sshd_config.CIS /etc/ssh/sshd_config # svcadm restart svc:/network/ssh

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: solarisssh
Referencia: CIS Oracle Solaris 11.4 Benchmark v1.1.0 - 6.13 Disable X11 Forwarding for SSH

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target solaris