OL 9 must prevent the use of dictionary words for passwords.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-271637	SRG-OS-000480-GPOS-00225	OL09-00-001125	SV-271637r1091623_rule	2025-05-08	1

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. If OL 9 allows the user to select passwords based on dictionary words, this increases the chances of password compromise by increasing the opportunity for successful guesses, and brute-force attacks.

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. If OL 9 allows the user to select passwords based on dictionary words, this increases the chances of password compromise by increasing the opportunity for successful guesses, and brute-force attacks.

ℹ️ Check
Verify that OL 9 prevents the use of dictionary words for passwords with the following command: $ grep dictcheck /etc/security/pwquality.conf /etc/pwquality.conf.d/*.conf /etc/security/pwquality.conf:dictcheck=1 If "dictcheck" does not have a value other than "0", or is commented out, this is a finding.

✔️ Fix
Configure OL 9 to prevent the use of dictionary words for passwords. Add or update the following line in the "/etc/security/pwquality.conf" file or a configuration file in the /etc/pwquality.conf.d/ directory to contain the "dictcheck" parameter: dictcheck=1