The SLES for vRealize must enforce a delay of at least 4 seconds between logon prompts following a failed logon attempt.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239647	VROM-SL-001490	SV-239647r662392_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
VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide	2021-07-01

Details

Check Text ( C-42880r662390_chk )
Check the value of the "FAIL_DELAY" variable and the ability to use it: # grep FAIL_DELAY /etc/login.defs The following result should be displayed: FAIL_DELAY 4 If the value does not exist, or is less than "4", this is a finding. Check for the use of "pam_faildelay": # grep pam_faildelay /etc/pam.d/common-auth* The following result should be displayed: /etc/pam.d/common-auth:auth optional pam_faildelay.so If the "pam_faildelay.so" module is not listed or is commented out, this is a finding.

Check Text ( C-42880r662390_chk )

Check the value of the "FAIL_DELAY" variable and the ability to use it:

# grep FAIL_DELAY /etc/login.defs

The following result should be displayed:

FAIL_DELAY 4

If the value does not exist, or is less than "4", this is a finding.

Check for the use of "pam_faildelay":

# grep pam_faildelay /etc/pam.d/common-auth*

The following result should be displayed:

/etc/pam.d/common-auth:auth optional pam_faildelay.so

If the "pam_faildelay.so" module is not listed or is commented out, this is a finding.

Fix Text (F-42839r662391_fix)
Add the "pam_faildelay" module and set the "FAIL_DELAY" variable. Edit the "/etc/login.defs" file and set the value of the "FAIL_DELAY" variable to "4" or more. Edit "/etc/pam.d/common-auth" and add a "pam_faildelay" entry if one does not exist, such as: auth optional pam_faildelay.so