STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must require the change of at least four character classes when passwords are changed.

DISA Rule

SV-282454r1200342_rule

Vulnerability Number

V-282454

Group Title

SRG-OS-000072-GPOS-00040

Rule Version

TOSS-05-000352

Severity

CAT II

CCI(s)

• CCI-004066 - For password-based authentication, enforce organization-defined composition and complexity rules.

Weight

10

Fix Recommendation

Configure TOSS 5 to require the change of at least four character classes when passwords are changed by setting the "minclass" option.

Add the following line to "/etc/security/pwquality.conf" (or modify the line to have the required value):

minclass = 4

Check Contents

Verify the value of the "minclass" option in "/etc/security/pwquality.conf" using the following command:

$ grep minclass /etc/security/pwquality.conf

minclass = 4

If the value of "minclass" is set to less than "4", or is commented out, this is a finding.

Vulnerability Number

V-282454

Documentable

False

Rule Version

TOSS-05-000352

Severity Override Guidance

Verify the value of the "minclass" option in "/etc/security/pwquality.conf" using the following command:

$ grep minclass /etc/security/pwquality.conf

minclass = 4

If the value of "minclass" is set to less than "4", or is commented out, this is a finding.

Check Content Reference

M

Target Key

5738