The SUSE operating system must enforce a delay of at least four (4) seconds between logon prompts following a failed logon attempt.

From SLES 12 Security Technical Implementation Guide

Associated with: CCI-000366

SV-91769r1_rule The SUSE operating system must enforce a delay of at least four (4) seconds between logon prompts following a failed logon attempt.

Vulnerability discussion

Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain access to an account.

Check content

Verify the SUSE operating system enforces a delay of at least four (4) seconds between logon prompts following a failed logon attempt. Check that the SUSE operating system enforces a delay of at least four (4) seconds between logon prompts following a failed logon attempt with the following command: # grep FAIL_DELAY /etc/login.defs FAIL_DELAY 4 If the value of "FAIL_DELAY" is not set to "4", "FAIL_DELAY" is commented out, or "FAIL_DELAY" is missing, then this is a finding.

Fix text

Configure the SUSE operating system to enforce a delay of at least four (4) seconds between logon prompts following a failed logon attempt. Add or update the following variable in "/etc/login.defs" to match the line below ("FAIL_DELAY" must have a value of "4" or higher): FAIL_DELAY 4

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