Ensure the Sudo Timeout Period Is Set to Zero

AltaNível 1Automatizadamacos

Descrição

The sudo command allows the user to run programs as the root user. Working as the root user allows the user an extremely high level of configurability within the system. This control, along with the control to use a separate timestamp for each tty, limits the window where an unauthorized user, process, or attacker could utilize legitimate credentials that are valid for longer than required. The sudo command stays logged in as the root user for five minutes before timing out and re-requesting a password. This five-minute window should be eliminated since it leaves the system extremely vulnerable. This is especially true if an exploit were to gain access to the system, since they would be able to make changes as a root user.

Como é verificado

Método de auditoria: Comando shell

shell

v=$(/usr/bin/sudo -V 2>/dev/null) || exit 1
c=$(printf '%s\n' "$v" | /usr/bin/grep -c "Authentication timestamp timeout: 0.0 minutes")
o=$(/usr/bin/stat -f '%Su:%Sg' /etc/sudoers.d 2>/dev/null)
if [ "$c" -ge 1 ] && [ "$o" = root:wheel ]; then echo compliant; else echo "timeout-zero=$c owner=$o"; fi

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

Terminal Method: Run the following command to edit the sudo settings: % /usr/bin/sudo /usr/sbin/visudo -f /etc/sudoers.d/<configuration file name> example: % /usr/bin/sudo /usr/sbin/visudo -f /etc/sudoers.d/10_cissudoconfiguration Note: Unlike other Unix and/or Linux distros, macOS will ignore configuration files in the sudoers.d folder that contain a . so do not add a file extension to the configuration file. Add the line Defaults timestamp_timeout=0 to the configuration file. If /etc/sudoers.d/ is not owned by root or in the wheel group, run the following to change ownership and group: % /usr/bin/sudo /usr/sbin/chown -R root:wheel /etc/sudoers.d/

Propriedades

Sistemas operacionais: macos-14
Tags: macossonoma
Referência: CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 5.4 Ensure the Sudo Timeout Period Is Set to Zero

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell

tmaegis scan --target macos