RHEL 9 must maintain an account lock until the locked account is released by an administrator.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-258057 | SRG-OS-000329-GPOS-00128 | RHEL-09-411090 | SV-258057r1045146_rule | 2025-02-27 | 2 |
| 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 |
| ℹ️ Check |
|---|
| Verify RHEL 9 is configured to lock an account until released by an administrator after three unsuccessful logon attempts with the command: $ sudo grep -w unlock_time /etc/security/faillock.conf unlock_time = 0 If the "unlock_time" option is not set to "0" or the line is missing or commented out, this is a finding. |
| ✔️ Fix |
|---|
| Configure RHEL 9 to lock an account until released by an administrator after three unsuccessful logon attempts with the command: $ sudo authselect enable-feature with-faillock Edit the "/etc/security/faillock.conf" file as follows: unlock_time = 0 |