Amazon Linux 2023 must insure all interactive users have a primary group that exists.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-274159 | AZLX-23-002480 | SV-274159r1120465_rule | CCI-000764 | medium |
| Description | ||||
| If a user is assigned the group identifier (GID) of a group that does not exist on the system, and a group with the GID is subsequently created, the user may have unintended rights to any files associated with the group. Satisfies: SRG-OS-000104-GPOS-00051, SRG-OS-000121-GPOS-00062, SRG-OS-000042-GPOS-00020 | ||||
| STIG | Date | |||
| Amazon Linux 2023 Security Technical Implementation Guide | 2026-02-27 | |||
Details
Check Text (C-274159r1120465_chk)
Verify Amazon Linux 2023 interactive users have a valid GID with the following command:
$ sudo pwck -qr
If the system has any interactive users with duplicate GIDs, this is a finding.
Fix Text (F-78155r1120464_fix)
Configure Amazon Linux 2023 so that all GIDs are referenced in "/etc/passwd" are defined in "/etc/group".
Edit the file "/etc/passwd" and ensure that every user's GID is a valid GID.