STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide Version: 2 Release: 6 Benchmark Date: 01 Jul 2026:

TOSS must enforce password complexity by requiring that at least one lowercase character be used.

DISA Rule

SV-253061r1016311_rule

Vulnerability Number

V-253061

Group Title

SRG-OS-000070-GPOS-00038

Rule Version

TOSS-04-040060

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

Configure the operating system to enforce password complexity by requiring that at least one lowercase character be used by setting the "lcredit" option.

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

lcredit = -1

Check Contents

Verify the value for "lcredit" in "/etc/security/pwquality.conf" with the following command:

$ sudo grep lcredit /etc/security/pwquality.conf
lcredit = -1

If the value of "lcredit" is a positive number or is commented out, this is a finding.

Vulnerability Number

V-253061

Documentable

False

Rule Version

TOSS-04-040060

Severity Override Guidance

Verify the value for "lcredit" in "/etc/security/pwquality.conf" with the following command:

$ sudo grep lcredit /etc/security/pwquality.conf
lcredit = -1

If the value of "lcredit" is a positive number or is commented out, this is a finding.

Check Content Reference

M

Target Key

5469