STIGQter: STIG Summary: Red Hat Enterprise Linux 8 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 23 Apr 2021:

RHEL 8 must require the change of at least 8 characters when passwords are changed.

DISA Rule

SV-230363r627750_rule

Vulnerability Number

V-230363

Group Title

SRG-OS-000072-GPOS-00040

Rule Version

RHEL-08-020170

Severity

CAT II

CCI(s)

• CCI-000195 - The information system, for password-based authentication, when new passwords are created, enforces that at least an organization-defined number of characters are changed.

Weight

10

Fix Recommendation

Configure the operating system to require the change of at least eight of the total number of characters when passwords are changed by setting the "difok" option.

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

difok = 8

Check Contents

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

$ sudo grep difok /etc/security/pwquality.conf

difok = 8

If the value of "difok" is set to less than "8" or is commented out, this is a finding.

Vulnerability Number

V-230363

Documentable

False

Rule Version

RHEL-08-020170

Severity Override Guidance

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

$ sudo grep difok /etc/security/pwquality.conf

difok = 8

If the value of "difok" is set to less than "8" or is commented out, this is a finding.

Check Content Reference

M

Target Key

2921

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