RHEL 9 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.
An XCCDF Rule
Description
<VulnDiscussion>Increasing the time between a failed authentication attempt and reprompting to enter credentials helps to slow a single-threaded brute force attack.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-258071r991588_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Configure the RHEL 9 to enforce a delay of at least four seconds between logon prompts following a failed console logon attempt.
Modify the "/etc/login.defs" file to set the "FAIL_DELAY" parameter to 4 or greater:
FAIL_DELAY 4