STIGQter: STIG Summary: Oracle Linux 7 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The Oracle Linux operating system must be configured so that when passwords are changed the number of repeating characters of the same character class must not be more than four characters.

DISA Rule

SV-221676r603260_rule

Vulnerability Number

V-221676

Group Title

SRG-OS-000072-GPOS-00040

Rule Version

OL07-00-010190

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 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

Check Contents

The "maxclassrepeat" option sets the maximum number of allowed same consecutive characters in the same class in the new password.

Check for the value of the "maxclassrepeat" option in "/etc/security/pwquality.conf" with the following command:

# grep maxclassrepeat /etc/security/pwquality.conf
maxclassrepeat = 4

If the value of "maxclassrepeat" is set to more than "4", this is a finding.

Vulnerability Number

V-221676

Documentable

False

Rule Version

OL07-00-010190

Severity Override Guidance

The "maxclassrepeat" option sets the maximum number of allowed same consecutive characters in the same class in the new password.

Check for the value of the "maxclassrepeat" option in "/etc/security/pwquality.conf" with the following command:

# grep maxclassrepeat /etc/security/pwquality.conf
maxclassrepeat = 4

If the value of "maxclassrepeat" is set to more than "4", this is a finding.

Check Content Reference

M

Target Key

4089

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