TMA-COS-5.3.3

Ensure default group for the root account is GID 0

中级别 1自动化cos

说明

The usermod command can be used to specify which group the root user belongs to. This affects permissions of files that are created by the root user. Using GID 0 for the root account helps prevent root -owned files from accidentally becoming accessible to non-privileged users.

检查方式

审计方法: Shell 命令

shell

alt0() { command -v cut >/dev/null 2>&1 || { echo "step1: cut not installed"; return 1; }; command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; o=$(bash -c 'grep "^root:" /etc/passwd | cut -f4 -d:' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 0 || { echo step1: missing 0; return 1; }; }; if alt0; then echo compliant; fi

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

Run the following command to set the root user default group to GID 0 : # usermod -g 0 root

属性

操作系统: 任意
标签: container-optimized-oscos
参考: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.3.3 Ensure default group for the root account is GID 0

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target cos