STIGQter: STIG Summary: Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Jul 2026:

Duplicate User IDs (UIDs) must not exist for interactive users.

DISA Rule

SV-269365r1050248_rule

Vulnerability Number

V-269365

Group Title

SRG-OS-000104-GPOS-00051

Rule Version

ALMA-09-033020

Severity

CAT II

CCI(s)

• CCI-000764 - Uniquely identify and authenticate organizational users and associate that unique identification with processes acting on behalf of those users.
• CCI-000804 - Uniquely identify and authenticate non-organizational users or processes acting on behalf of non-organizational users.

Weight

10

Fix Recommendation

Provide each interactive user that has a duplicate UID with a unique UID using the "usermod" command, for example:

$ usermod -u 1002 myuser

Check Contents

Verify that AlmaLinux OS 9 contains no duplicate UIDs for interactive users with the following command:

$ cut -f3 -d":" /etc/passwd | uniq -d

If output is produced and the UIDs listed are for interactive user accounts, this is a finding.

Vulnerability Number

V-269365

Documentable

False

Rule Version

ALMA-09-033020

Severity Override Guidance

Verify that AlmaLinux OS 9 contains no duplicate UIDs for interactive users with the following command:

$ cut -f3 -d":" /etc/passwd | uniq -d

If output is produced and the UIDs listed are for interactive user accounts, this is a finding.

Check Content Reference

M

Target Key

5664