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← Back to Red Hat Enterprise Linux 10 Security Technical Implementation Guide

V-281172

CAT II (Medium)

RHEL 10 must not allow duplicate user IDs (UIDs) to exist for interactive users.

Rule ID

SV-281172r1166468_rule

STIG

Red Hat Enterprise Linux 10 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000764CCI-000804

Discussion

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

Check Content

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

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.