Verify Ownership of Files in /var/log/sssd

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Description

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

$ sudo chown sssd /var/log/sssd/*

or

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

Rationale

The /var/log/sssd directory contains debug logs for the System Security Services Daemon (SSSD) 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

if id "sssd" >/dev/null 2>&1; then
  newown="sssd"
elif id "root" >/dev/null 2>&1; then
  newown="root"
fi
if [[ -z ${newown} ]]; then
  echo "sssd and root is not a defined user on the system"
  exit 1
fi

find  /var/log/sssd/  -type f  ! -user sssd ! -user root -regextype posix-extended -regex '.*' -exec chown -L $newown {} \;

Ansible playbook

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

- name: Check that the sssd user is defined
  getent:
    database: passwd
    key: sssd
  ignore_errors: true
  tags:
  - configure_strategy
  - file_ownerships_var_log_sssd
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Set the file_ownerships_var_log_sssd_newown variable if sssd found
  set_fact:
    file_ownerships_var_log_sssd_newown: sssd
  when: ansible_facts.getent_passwd["sssd"] is defined
  tags:
  - configure_strategy
  - file_ownerships_var_log_sssd
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Check that the root user is defined
  getent:
    database: passwd
    key: root
  ignore_errors: true
  when: file_ownerships_var_log_sssd_newown is undefined
  tags:
  - configure_strategy
  - file_ownerships_var_log_sssd
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

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

- name: Find /var/log/sssd/ file(s) matching .* recursively
  command: find  /var/log/sssd/  -type f  ! -user sssd ! -user root -regextype posix-extended
    -regex ".*"
  register: files_found
  changed_when: false
  failed_when: false
  check_mode: false
  tags:
  - configure_strategy
  - file_ownerships_var_log_sssd
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Ensure owner on /var/log/sssd/ file(s) matching .*
  file:
    path: '{{ item }}'
    owner: '{{ file_ownerships_var_log_sssd_newown }}'
    state: file
  with_items:
  - '{{ files_found.stdout_lines }}'
  tags:
  - configure_strategy
  - file_ownerships_var_log_sssd
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed