Ensure group root is the only GID 0 group

中等級 1自動化linux

說明

Groups are defined in /etc/group, each identified by a group ID (GID). GID 0 is reserved for the root group, the privileged group associated with the superuser.

檢查方式

稽核方法: Shell 指令

shell

alt0() { command -v awk >/dev/null 2>&1 || { echo "step1: awk not installed"; return 1; }; o=$(bash -c 'awk -F: '"'"'($3 == 0) { print $1 }'"'"' /etc/group' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'Only root should be returned.' || { echo step1: missing 'Only root should be returned.'; return 1; }; }; if alt0; then echo compliant; 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

Run the following command to reassign any group other than root that has GID 0 to an unused GID: # groupmod -g <NEW_GID> <groupname> Example: # groupmod -g 200 legacyadmins If the root group's GID is not 0, run the following command to reset it: # groupmod -g 0 root

屬性

作業系統: rocky-9
標籤: cis-convertedlinux
參考資料: CIS Rocky Linux 9 Benchmark v3.0.0 - 5.4.2.3

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 linux