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V-258061

CAT II (Medium)

RHEL 9 groups must have unique Group ID (GID).

Rule ID

SV-258061r958482_rule

STIG

Red Hat Enterprise Linux 9 Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-000764

Discussion

To ensure accountability and prevent unauthenticated access, groups must be identified uniquely to prevent potential misuse and compromise of the system.

Check Content

Verify that RHEL 9 contains no duplicate GIDs for interactive users with the following command:
 
 $  cut -d : -f 3 /etc/group | uniq -d
 
If the system has duplicate GIDs, this is a finding.

Fix Text

Edit the file "/etc/group" and provide each group that has a duplicate GID with a unique GID.