Host SSH daemon, if enabled, must not permit user environment settings

MediaNivel 1Automatizadavmware

Descripción

Preventing user environment settings in the SSH daemon ensures a consistent and controlled environment, reducing the attack surface by limiting the customization of the SSH environment by users. The audit reads /etc/ssh/sshd_config and requires PermitUserEnvironment no (unset = OpenSSH default no). Runs in the ESXi Shell (busybox sh) as root.

Cómo se verifica

Método de auditoría: Comando de shell

shell

f=/etc/ssh/sshd_config; [ -r "$f" ] || exit 1
v=$(awk 'tolower($1)=="permituserenvironment" {print tolower($2); exit}' "$f")
case "$v" in '') echo compliant ;; no) echo compliant ;; *) echo "PermitUserEnvironment $v" ;; esac

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

To remediate this recommendation, set PermitUserEnvironment no, restart SSH if authorized, and verify users cannot alter the SSH environment through per-user environment settings.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: vmwareesxiservices
Referencia: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 6.5.12 Host SSH daemon, if enabled, must not permit user environment settings

Verificar este host

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

shell

tmaegis scan --target vmware