STIGQter: STIG Summary: Amazon Linux 2023 Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 01 Jul 2026:

Amazon Linux 2023 must automatically lock an account when three unsuccessful logon attempts occur.

DISA Rule

SV-274154r1120450_rule

Vulnerability Number

V-274154

Group Title

SRG-OS-000329-GPOS-00128

Rule Version

AZLX-23-002455

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 Amazon Linux 2023 to lock an account when three unsuccessful logon attempts occur.

Add/modify the "/etc/security/faillock.conf" file to match the following line:

deny = 3

Check Contents

Verify Amazon Linux 2023 is configured to lock an account after three unsuccessful logon attempts with the command:

$ grep 'deny =' /etc/security/faillock.conf
deny = 3

If the "deny" option is not set to "3" or less (but not "0"), is missing or commented out, this is a finding.

Vulnerability Number

V-274154

Documentable

False

Rule Version

AZLX-23-002455

Severity Override Guidance

Verify Amazon Linux 2023 is configured to lock an account after three unsuccessful logon attempts with the command:

$ grep 'deny =' /etc/security/faillock.conf
deny = 3

If the "deny" option is not set to "3" or less (but not "0"), is missing or commented out, this is a finding.

Check Content Reference

M

Target Key

5700