SLEM 5 must enforce passwords that contain at least one lowercase character.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-261378	SLEM-05-611015	SV-261378r996568_rule		Medium

Description

Use of a complex password helps increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

STIG	Date
SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide	2025-05-08

Details

Check Text (C-65107r996567_chk)

Verify SLEM 5 enforces password complexity by requiring at least one lower character with the following command:

> grep pam_cracklib.so /etc/pam.d/common-password
password requisite pam_cracklib.so lcredit=-1

If the value for "lcredit" is not "-1", if "lcredit" is missing from the line, the second column value different from "requisite", the line is commented out, or the line is missing, this is a finding.

Fix Text (F-65015r996000_fix)

Configure SLEM 5 to enforce password complexity by requiring at least one lowercase character.

Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "lcredit=-1" after the third column.