| name | cis-gcp-cos-1.5.1.4 |
| description | Ensure permissions on /etc/motd are configured |
| category | cis-gcp-cos |
| version | 1.2.0 |
| author | cyberstrike-official |
| tags | ["cis","gcp","container-optimized-os","banners","motd","file-permissions"] |
| cis_id | 1.5.1.4 |
| cis_benchmark | CIS Google Container-Optimized OS Benchmark v1.2.0 |
| tech_stack | ["gcp","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
1.5.1.4 Ensure permissions on /etc/motd are configured (Automated)
Description
The contents of the /etc/motd file are displayed to users after login and function as a message of the day for authenticated users.
Rationale
If the /etc/motd file does not have the correct ownership it could be modified by unauthorized users with incorrect or misleading information.
Audit Procedure
Run the following command and verify Uid and Gid are both 0/root and Access is 644:
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Expected Result
The output should show Access: (0644/-rw-r--r--), Uid: ( 0/ root), and Gid: ( 0/ root).
Remediation
Run the following commands to set permissions on /etc/motd:
/etc is stateless on Container-Optimized OS. Therefore, the steps mentioned above needs to be performed after every boot.
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|
| v8 | 3.3 Configure Data Access Control Lists | x | x | x |
| v7 | 5.1 Establish Secure Configurations | x | x | x |
Profile
Level 2 - Server | Automated