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

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
mediumV-271835SRG-OS-000104-GPOS-00051OL09-00-003006SV-271835r1092217_rule2025-05-081
Description
To ensure accountability and prevent unauthenticated access, groups must be identified uniquely to prevent potential misuse and compromise of the system.
ℹ️ Check
Verify that OL 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
Edit the file "/etc/group" and provide each group that has a duplicate GID with a unique GID.