Check: AZLX-23-002470
Amazon Linux 2023 STIG:
AZLX-23-002470
(in version v1 r1)
Title
Amazon Linux 2023 must maintain an account lock until the locked account is released by an administrator. (Cat II impact)
Discussion
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account.
Check Content
Verify Amazon Linux 2023 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 commented out, this is a finding.
Fix Text
Configure Amazon Linux 2023 to lock an account until released by an administrator after three unsuccessful logon attempts with the command: $ authselect enable-feature with-faillock Then edit the "/etc/security/faillock.conf" file as follows: unlock_time = 0
Additional Identifiers
Rule ID: SV-274157r1120459_rule
Vulnerability ID: V-274157
Group Title: SRG-OS-000329-GPOS-00128
Expert Comments
CCIs
| Number | Definition |
|---|---|
| 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. |
Controls
| Number | Title |
|---|---|
| AC-7 |
Unsuccessful Logon Attempts |