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V-260550

CAT III (Low)

Ubuntu 22.04 LTS must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

Rule ID

SV-260550r991588_rule

STIG

Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-000366

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 Ubuntu 22.04 LTS enforces a delay of at least four seconds between logon prompts following a failed logon attempt by using the following command:  
  
     $ grep pam_faildelay /etc/pam.d/common-auth 
     auth     required     pam_faildelay.so     delay=4000000  
  
If "delay" is not set to "4000000" or greater, the line is commented out, or is missing, this is a finding.

Fix Text

Configure Ubuntu 22.04 LTS to enforce a delay of at least four 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=4000000