All Group Identifiers (GIDs) referenced in the /etc/passwd file must be defined in the /etc/group file.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-72003	RHEL-07-020300	SV-86627r1_rule		Low

Description
If a user is assigned the GID of a group not existing 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.

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2017-12-14

Details

Check Text ( C-72235r1_chk )
Verify all GIDs referenced in the "/etc/passwd" file are defined in the "/etc/group" file. Check that all referenced GIDs exist with the following command: # pwck -r If GIDs referenced in "/etc/passwd" file are returned as not defined in "/etc/group" file, this is a finding.

Fix Text (F-78355r1_fix)
Configure the system to define all GIDs found in the "/etc/passwd" file by modifying the "/etc/group" file to add any non-existent group referenced in the "/etc/passwd" file, or change the GIDs referenced in the "/etc/passwd" file to a group that exists in "/etc/group".