STIGQter STIGQter: STIG Summary: Riverbed NetIM OS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 11 Sep 2025:

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

DISA Rule

SV-275640r1147970_rule

Vulnerability Number

V-275640

Group Title

SRG-OS-000480-GPOS-00226

Rule Version

RIIM-OS-412010

Severity

CAT III

CCI(s)

Weight

10

Fix Recommendation

Configure the Ubuntu OS 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

Check Contents

Verify Ubuntu OS enforces a delay of at least four seconds between console logon prompts following a failed logon attempt with the following command:

$ grep -i fail_delay /etc/login.defs

FAIL_DELAY 4

If the value of "FAIL_DELAY" is not set to "4" or greater, or the line is commented out, this is a finding.

Vulnerability Number

V-275640

Documentable

False

Rule Version

RIIM-OS-412010

Severity Override Guidance

Verify Ubuntu OS enforces a delay of at least four seconds between console logon prompts following a failed logon attempt with the following command:

$ grep -i fail_delay /etc/login.defs

FAIL_DELAY 4

If the value of "FAIL_DELAY" is not set to "4" or greater, or the line is commented out, this is a finding.

Check Content Reference

M

Target Key

5706