Verify Ownership of Files in /var/log/landscape

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Description

To properly set the owner of /var/log/landscape/*, run the command:

$ sudo chown root /var/log/landscape/*

or

$ sudo chown landscape /var/log/landscape/*

Rationale

The /var/log/landscape directory contains information about the landscape-client and should only be accessed by authorized personnel.

Remediation

Shell script

The following script can be run on the host to remediate the issue.

#!/bin/bash

newown=""
if id "root" >/dev/null 2>&1; then
  newown="root"
elif id "landscape" >/dev/null 2>&1; then
  newown="landscape"
fi

if [[ -z "$newown" ]]; then
  >&2 echo "root and landscape is not a defined user on the system"
else

find -P /var/log/landscape/ -maxdepth 1 -type f  ! -user root ! -user landscape -regextype posix-extended -regex '^.*$' -exec chown --no-dereference "$newown" {} \;

fi

Ansible playbook

The following playbook can be run with Ansible to remediate the issue.

- name: Check that the root user is defined
  ansible.builtin.getent:
    database: passwd
    key: root
  ignore_errors: true
  tags:
  - configure_strategy
  - file_ownerships_var_log_landscape
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Set the file_ownerships_var_log_landscape_newown variable if root found
  ansible.builtin.set_fact:
    file_ownerships_var_log_landscape_newown: root
  when: ansible_facts.getent_passwd["root"] is defined
  tags:
  - configure_strategy
  - file_ownerships_var_log_landscape
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Check that the landscape user is defined
  ansible.builtin.getent:
    database: passwd
    key: landscape
  ignore_errors: true
  when: file_ownerships_var_log_landscape_newown is undefined
  tags:
  - configure_strategy
  - file_ownerships_var_log_landscape
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Set the file_ownerships_var_log_landscape_newown variable if landscape found
  ansible.builtin.set_fact:
    file_ownerships_var_log_landscape_newown: landscape
  when: ansible_facts.getent_passwd["landscape"] is defined
  tags:
  - configure_strategy
  - file_ownerships_var_log_landscape
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Find /var/log/landscape/ file(s) matching ^.*$
  ansible.builtin.command: find -P /var/log/landscape/ -maxdepth 1 -type f  ! -user
    root ! -user landscape -regextype posix-extended -regex "^.*$"
  register: files_found
  changed_when: false
  failed_when: false
  check_mode: false
  tags:
  - configure_strategy
  - file_ownerships_var_log_landscape
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Ensure owner on /var/log/landscape/ file(s) matching ^.*$
  ansible.builtin.file:
    path: '{{ item }}'
    follow: false
    owner: '{{ file_ownerships_var_log_landscape_newown }}'
    state: file
  with_items:
  - '{{ files_found.stdout_lines }}'
  tags:
  - configure_strategy
  - file_ownerships_var_log_landscape
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed