Verify permissions on System Login Banner for Remote Connections
Description
To properly set the permissions of /etc/issue.net, run the command:
$ sudo chmod 0644 /etc/issue.net
Rationale
Display of a standardized and approved use notification before granting
access to the operating system ensures privacy and security notification
verbiage used is consistent with applicable federal laws, Executive Orders,
directives, policies, regulations, standards, and guidance.
Proper permissions will ensure that only root user can modify the banner.
Shell script
The following script can be run on the host to remediate the issue.
chmod u-xs,g-xws,o-xwt /etc/issue.net
Ansible playbook
The following playbook can be run with Ansible to remediate the issue.
- name: Test for existence /etc/issue.net
stat:
path: /etc/issue.net
register: file\_exists
tags:
- configure\_strategy
- file\_permissions\_etc\_issue\_net
- low\_complexity
- low\_disruption
- medium\_severity
- no\_reboot\_needed
- name: Ensure permission u-xs,g-xws,o-xwt on /etc/issue.net
file:
path: /etc/issue.net
mode: u-xs,g-xws,o-xwt
when: file\_exists.stat is defined and file\_exists.stat.exists
tags:
- configure\_strategy
- file\_permissions\_etc\_issue\_net
- low\_complexity
- low\_disruption
- medium\_severity
- no\_reboot\_needed
