Ensure sshd PermitUserEnvironment is disabled

Cómo se verifica

Método de auditoría: Comando de shell

alt0() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; command -v sshd >/dev/null 2>&1 || { echo "step1: sshd not installed"; return 1; }; o=$(bash -c 'sshd -T | grep permituserenvironment' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'permituserenvironment no' || { echo step1: missing 'permituserenvironment no'; return 1; }; }; if alt0; then echo compliant; fi

Salida esperada

compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Edit the /etc/ssh/sshd_config file to set the PermitUserEnvironment parameter to no above any Include entries as follows: PermitUserEnvironment no Note: First occurrence of an option takes precedence. If Include locations are enabled, used, and order of precedence is understood in your environment, the entry may be created in a file in Include location.

Verificar este host

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

tmaegis scan --target linux