linux-nis-service: NIS Service Should Be Disabled

id: linux-nis-service

info:
  name: NIS Service Should Be Disabled
  author: songyaeji
  severity: high
  description: |
    Evaluated the status of NIS service daemons on the system. Active NIS services could have permitted unauthorized users to escalate privileges or access sensitive account information, posing a significant security risk.
  reference:
    - https://isms.kisa.or.kr
  tags: linux,local,audit,kisa,compliance

self-contained: true

code:
  - engine:
      - sh
      - bash
    source: |
      if command -v systemctl >/dev/null 2>&1; then
          if systemctl is-active --quiet ypserv ypbind; then
              echo "[VULNERABLE] NIS service is running"
              systemctl status ypserv ypbind
          else
              echo "[SAFE] NIS service is not running"
          fi
      else
          running=$(ps -ef | egrep "ypserv|ypbind" | grep -v grep)
          if [ -n "$running" ]; then
              echo "[VULNERABLE] NIS service is running"
              echo "$running"
          else
              echo "[SAFE] NIS service is not running"
          fi
      fi

    matchers:
      - type: word
        part: response
        words:
          - "[VULNERABLE]"
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