Ensure NFS Server Is Disabled

中等級 1自動化macos

說明

macOS can act as an NFS fileserver. NFS sharing could be enabled to allow someone on another computer to mount shares and gain access to information from the user's computer. File sharing from a user endpoint has long been considered questionable, and Apple has removed that capability from the GUI. NFSD is still part of the Operating System and can be easily turned on to export shares and provide remote connectivity to an end-user computer. The etc/exports file contains the list of NFS shared directories. If the file exists, it is likely that NFS sharing has been enabled in the past or may be available periodically. As an additional check, the audit verifies that there is no /etc/exports file. File serving should not be done from a user desktop. Dedicated servers should be used. Open ports make it easier to exploit the computer.

檢查方式

稽核方法: Shell 指令

shell

s=$(/sbin/nfsd status 2>/dev/null | /usr/bin/awk '/nfsd service/ { print $NF }') || exit 1
if [ "$s" = disabled ] && [ ! -e /etc/exports ]; then echo compliant; else echo "nfsd=${s:-unknown}; /etc/exports present or service enabled"; fi

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 Method: Run the following command to disable the nfsd fileserver services: % /usr/bin/sudo /bin/launchctl disable system/com.apple.nfsd Remove the exported Directory listing. % /usr/bin/sudo /bin/rm -rf /etc/exports Note: Removing /etc/exports also stops the NFS service if it was running.

屬性

作業系統: macos-14
標籤: macossonoma
參考資料: CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 4.3 Ensure NFS Server Is Disabled

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