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 limit the maximum number of repeating characters to three when passwords are changed.

DISA Rule

SV-282453r1200339_rule

Vulnerability Number

V-282453

Group Title

SRG-OS-000072-GPOS-00040

Rule Version

TOSS-05-000351

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 changing the number of repeating consecutive characters when passwords are changed by setting the "maxrepeat" option.

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

maxrepeat = 3

Check Contents

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

$ grep maxrepeat /etc/security/pwquality.conf

maxrepeat = 3

If the value of "maxrepeat" is set to more than "3", or is commented out, this is a finding.

Vulnerability Number

V-282453

Documentable

False

Rule Version

TOSS-05-000351

Severity Override Guidance

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

$ grep maxrepeat /etc/security/pwquality.conf

maxrepeat = 3

If the value of "maxrepeat" is set to more than "3", or is commented out, this is a finding.

Check Content Reference

M

Target Key

5738