Ensure no duplicate UIDs exist

检查方式

审计方法: Shell 命令

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

预期输出

compliant

修复方式

修复方法: 操作指南或基础设施补丁

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.

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。

tmaegis scan --target linux