Amazon Linux 2023 must insure all interactive users have a primary group that exists.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-274159 | SRG-OS-000104-GPOS-00051 | AZLX-23-002480 | SV-274159r1120465_rule | 2026-05-22 | 1 |
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
ℹ️ Check
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
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.