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V-271834

CAT II (Medium)

OL 9 interactive users must have a primary group that exists.

Rule ID

SV-271834r1092214_rule

STIG

Oracle Linux 9 Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-000764

Discussion

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.

Check Content

Verify that OL 9 interactive users have a valid GID.

Check that the 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

Configure the system 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.