SLEM 5 must enforce a delay of at least five seconds between logon prompts following a failed logon attempt via pluggable authentication modules (PAM).
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-261365 | SRG-OS-000480-GPOS-00226 | SLEM-05-412025 | SV-261365r996541_rule | 2024-06-04 | 1 |
| Description |
|---|
| Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain access to an account. |
| ℹ️ Check |
|---|
| Verify SLEM 5 enforces a delay of at least five seconds between logon prompts following a failed logon attempt with the following command: > grep pam_faildelay /etc/pam.d/common-auth auth required pam_faildelay.so delay=5000000 If the value of "delay" is not set to "5000000" or greater, "delay" is missing, the line is commented out, or the "pam_faildelay" line is missing completely, this is a finding. |
| ✔️ Fix |
|---|
| Configure SLEM 5 to enforce a delay of at least five seconds between logon prompts following a failed logon attempt. Add or modify the following line in the "/etc/pam.d/common-auth" file: auth required pam_faildelay.so delay=5000000 |