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RHEL 9 must maintain an account lock until the locked account is released by an administrator.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-258057 | RHEL-09-411090 | SV-258057r958736_rule | Medium |
| Description |
|---|
| 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. Satisfies: SRG-OS-000329-GPOS-00128, SRG-OS-000021-GPOS-00005 |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-06-04 |
Details
| Check Text ( C-61798r926156_chk ) |
|---|
| Verify RHEL 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 commented out, this is a finding. |
| Fix Text (F-61722r926157_fix) |
|---|
| Configure RHEL 9 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 |