The Ubuntu operating system must enforce a delay of at least 4 seconds between logon prompts following a failed logon attempt.
An XCCDF Rule
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.
- ID
- SV-238237r991588_rule
- Version
- UBTU-20-010075
- Severity
- Low
- References
- Updated
Remediation Templates
A Manual Procedure
Configure the Ubuntu operating system to enforce a delay of at least 4 seconds between logon prompts following a failed logon attempt.
Edit the file "/etc/pam.d/common-auth" and set the parameter "pam_faildelay" to a value of 4000000 or greater:
auth required pam_faildelay.so delay=4000000