Ensure a Login Window Banner Exists

中等級 2自動化macos

說明

A Login window banner warning informs the user that the system is reserved for authorized use only. It enforces an acknowledgment by the user that they have been informed of the use policy in the banner if required. The system recognizes either the .txt and the .rtf formats. Audit: A /Library/Security/PolicyBanner.* file must exist and its mode must have 4 as the third digit.

檢查方式

稽核方法: Shell 指令

shell

set -- /Library/Security/PolicyBanner.*
[ -e "$1" ] || exit 1
for f in "$@"; do
  p=$(/usr/bin/stat -f %A "$f") || exit 1
  case "$p" in ??4) ;; *) echo "$f mode $p"; exit 0;; esac
done
echo compliant

預期輸出: compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

Terminal: sudo /bin/chmod o+r /Library/Security/PolicyBanner.txt ; sudo /bin/chmod o+r /Library/Security/PolicyBanner.rtf.

屬性

作業系統: macos-15
標籤: macossystem-access
參考資料: CIS Apple macOS 15.0 Sequoia Benchmark v2.1.0 - 5.8 Ensure a Login Window Banner Exists

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target macos --level 2