RHEL 10 must not allow duplicate user IDs (UIDs) to exist for interactive users.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281172 | RHEL-10-600130 | SV-281172r1166468_rule | CCI-000764 | medium |
| Description | ||||
| To ensure accountability and prevent unauthenticated access, interactive users must be identified and authenticated to prevent potential misuse and compromise of the system. Satisfies: SRG-OS-000104-GPOS-00051, SRG-OS-000121-GPOS-00062 | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281172r1166468_chk)
Verify RHEL 10 contains no duplicate UIDs for interactive users with the following command:
$ sudo awk -F ":" 'list[$3]++{print $1, $3}' /etc/passwd
If output is produced and the accounts listed are interactive user accounts, this is a finding.
Fix Text (F-85638r1166467_fix)
Configure RHEL 10 to not allow duplicate UIDs to exist for interactive users.
Edit the file "/etc/passwd", and provide each interactive user account that has a duplicate UID with a unique UID.