The Red Hat Enterprise Linux operating system must be configured so that when passwords are changed or new passwords are established, pwquality must be used.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-73159	RHEL-07-010119	SV-87811r4_rule		Medium

Description
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality" enforces complex password construction configuration and has the ability to limit brute-force attacks on the system.

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2019-03-08

Details

Check Text ( C-73283r6_chk )
Verify the operating system uses "pwquality" to enforce the password complexity rules. Check for the use of "pwquality" with the following command: # cat /etc/pam.d/system-auth \| grep pam_pwquality password required pam_pwquality.so retry=3 If the command does not return an uncommented line containing the value "pam_pwquality.so", this is a finding. If the value of "retry" is set to "0" or greater than "3", this is a finding.

Check Text ( C-73283r6_chk )

Verify the operating system uses "pwquality" to enforce the password complexity rules.

Check for the use of "pwquality" with the following command:

# cat /etc/pam.d/system-auth | grep pam_pwquality

password required pam_pwquality.so retry=3

If the command does not return an uncommented line containing the value "pam_pwquality.so", this is a finding.

If the value of "retry" is set to "0" or greater than "3", this is a finding.

Fix Text (F-79605r5_fix)
Configure the operating system to use "pwquality" to enforce password complexity rules. Add the following line to "/etc/pam.d/system-auth" (or modify the line to have the required value): password required pam_pwquality.so retry=3 Note: The value of "retry" should be between "1" and "3".