Verify User Who Owns /etc/at.allow file

Documentos > Datadog Security > OOTB Rules > Verify User Who Owns /etc/at.allow file

This page is not yet available in Spanish. We are working on its translation.
If you have any questions or feedback about our current translation project, feel free to reach out to us!

Description

If /etc/at.allow exists, it must be owned by root.

To properly set the owner of /etc/at.allow, run the command:

$ sudo chown root /etc/at.allow

Rationale

If the owner of the at.allow file is not set to root, the possibility exists for an unauthorized user to view or edit sensitive information.

Remediation

Shell script

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

#!/bin/bash

# Remediation is applicable only in certain platforms
if [ ! -f /.dockerenv ] && [ ! -f /run/.containerenv ]; then

chown -L 0 /etc/at.allow

else
    >&2 echo 'Remediation is not applicable, nothing was done'
fi

Ansible playbook

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

- name: Test for existence /etc/at.allow
  stat:
    path: /etc/at.allow
  register: file_exists
  when: ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  tags:
  - PCI-DSSv4-2.2.6
  - configure_strategy
  - file_owner_at_allow
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Ensure owner 0 on /etc/at.allow
  file:
    path: /etc/at.allow
    owner: '0'
  when:
  - ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  - file_exists.stat is defined and file_exists.stat.exists
  tags:
  - PCI-DSSv4-2.2.6
  - configure_strategy
  - file_owner_at_allow
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed