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

AlmaLinux OS 9 must maintain an account lock until the locked account is manually released by an administrator; and not automatically after a set time.

DISA Rule

SV-269153r1050035_rule

Vulnerability Number

V-269153

Group Title

SRG-OS-000329-GPOS-00128

Rule Version

ALMA-09-008160

Severity

CAT II

CCI(s)

• CCI-002238 - Automatically lock the account or node for either an organization-defined time period, until the locked account or node is released by an administrator, or delays the next logon prompt according to the organization-defined delay algorithm when the maximum number of unsuccessful logon attempts is exceeded.

Weight

10

Fix Recommendation

Configure AlmaLinux OS 9 to lock accounts until released by an administrator using pam_faillock.

First, enable the feature using the following command:

$ authselect enable-feature with-faillock

Then, add or uncomment the following line in the "/etc/security/faillock.conf" file:

unlock_time = 0

Check Contents

Verify AlmaLinux OS 9 is configured to lock an account until released by an administrator after three unsuccessful logon attempts with the command:

$ grep unlock_time /etc/security/faillock.conf

unlock_time = 0

If the "unlock_time" option is not set to "0", the line is missing, or is commented out, this is a finding.

Vulnerability Number

V-269153

Documentable

False

Rule Version

ALMA-09-008160

Severity Override Guidance

Verify AlmaLinux OS 9 is configured to lock an account until released by an administrator after three unsuccessful logon attempts with the command:

$ grep unlock_time /etc/security/faillock.conf

unlock_time = 0

If the "unlock_time" option is not set to "0", the line is missing, or is commented out, this is a finding.

Check Content Reference

M

Target Key

5664