Ensure No World Writable Folders Exist in the System Folder

高レベル 1自動macos

説明

Software sometimes insists on being installed in the /System/Volumes/Data/System Directory and has inappropriate world-writable permissions. Macs with writable files in System should be investigated forensically. A file with open writable permissions is a sign of at best a rogue application. It could also be a sign of a computer compromise and a persistent presence on the system. Folders in /System/Volumes/Data/System should not be world-writable. The audit check excludes the downloadDir and locks folders that are part of Apple's default user template.

チェック方法

監査方法: シェルコマンド

shell

[ -d /System/Volumes/Data/System ] || exit 1
/usr/bin/find /System/Volumes/Data/System -type d -perm -2 -ls 2>/dev/null | /usr/bin/grep -vE "downloadDir|locks" | /usr/bin/wc -l | /usr/bin/xargs

期待される出力: 0

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 set permissions so that folders are not world-writable in the /System folder: % IFS=$'\n' for sysPermissions in $( /usr/bin/sudo /usr/bin/find /System/Volumes/Data/System -type d -perm -2 2>/dev/null | /usr/bin/grep -vE "downloadDir|locks" ); do /bin/chmod -R o-w "$sysPermissions" done

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 - 5.1.6 Ensure No World Writable Folders Exist in the System Folder

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