TOSS 5 must limit the maximum number of repeating characters of the same character class to four when passwords are changed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-282452	TOSS-05-000350	SV-282452r1200336_rule	CCI-004066	medium
Description
Using a complex password helps to 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 a password, the greater the number of possible combinations that must be tested before the password is compromised.
STIG			Date
Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide			2026-04-01

Details

Check Text (C-282452r1200336_chk)

Verify the value of the "maxclassrepeat" option in "/etc/security/pwquality.conf" using the following command: $ grep maxclassrepeat /etc/security/pwquality.conf maxclassrepeat = 4 If the value of "maxclassrepeat" is set to "0", more than "4", or is commented out, this is a finding.

Fix Text (F-86918r1200335_fix)

Configure TOSS 5 to require the change of the number of repeating characters of the same character class when passwords are changed by setting the "maxclassrepeat" option. Add the following line to "/etc/security/pwquality.conf" conf (or modify the line to have the required value): maxclassrepeat = 4