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


Overview

Finding ID Version Rule ID IA Controls Severity
V-77131 SLES-12-010370 SV-91827r2_rule Medium
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.
STIG Date
SLES 12 Security Technical Implementation Guide 2018-09-27

Details

Check Text ( C-76741r3_chk )
Verify the SUSE operating system enforces a delay of at least four seconds between logon prompts following a failed logon attempt.

# grep pam_faildelay /etc/pam.d/common-auth*
auth required pam_faildelay.so delay=4000000

If the value of "delay" is not set to "4000000", "delay" is commented out, "delay" is missing, or the "pam_faildelay" line is missing completely, this is a finding.
Fix Text (F-83827r2_fix)
Configure the SUSE operating system to enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

Edit the file "/etc/pam.d/common-auth".

Add a parameter "pam_faildelay" and set it to:

# delay is in micro seconds
auth required pam_faildelay.so delay=4000000