Ensure no duplicate UIDs exist

チェック方法

監査方法: シェルコマンド

alt0() { o=$(bash -c '#!/usr/bin/env bash

{
  while read -r l_count l_uid; do
    if [ "$l_count" -gt 1 ]; then
      echo -e "Duplicate UID: \"$l_uid\" Users: \"$(awk -F: '"'"'($3 == n) { print $1 }'"'"' n=$l_uid /etc/passwd | xargs)\""
    fi
  done < <(cut -f3 -d":" /etc/passwd | sort -n | uniq -c)
}' 2>&1); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; }; if alt0; then echo compliant; fi

期待される出力

compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

Based on the Audit Procedure output, for each UID shared by more than one account, keep the UID on the correct account and assign a new, unused UID to each of the other accounts: # usermod -u <UID> <username> usermod reassigns ownership of files in the account's home directory automatically. Review any other files owned by the previously shared UID and reassign ownership to the correct account as appropriate.

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。

tmaegis scan --target linux