Ensure the Sudo Timeout Period Is Set to Zero

高レベル 1自動macos

説明

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.

チェック方法

監査方法: シェルコマンド

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

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

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/

プロパティ

オペレーティングシステム: macos-14
タグ: macossonoma
参照: CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 5.4 Ensure the Sudo Timeout Period Is Set to Zero

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target macos