OL 8 must enforce password complexity by requiring that at least one uppercase character be used.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-248687	OL08-00-020110	SV-248687r779627_rule		Low

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. Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised. OL 8 uses pwquality as a mechanism to enforce password complexity. Note that in order to require uppercase characters without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf". Satisfies: SRG-OS-000069-GPOS-00037, SRG-OS-000070-GPOS-00038

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. Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised. OL 8 uses pwquality as a mechanism to enforce password complexity. Note that in order to require uppercase characters without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf". Satisfies: SRG-OS-000069-GPOS-00037, SRG-OS-000070-GPOS-00038

STIG	Date
Oracle Linux 8 Security Technical Implementation Guide	2021-07-21

Details

Check Text ( C-52121r779625_chk )
Verify the value for "ucredit" in "/etc/security/pwquality.conf" or "/etc/security/pwquality.conf.d/.conf" files with the following command: $ sudo grep ucredit /etc/security/pwquality.conf /etc/security/pwquality.conf.d/.conf /etc/security/pwquality.conf:ucredit = -1 If the value of "ucredit" is a positive number or is commented out, this is a finding.

Fix Text (F-52075r779626_fix)
Configure OL 8 to enforce password complexity by requiring that at least one uppercase character be used by setting the "ucredit" option. Add or update the following line in the "/etc/security/pwquality.conf" file or a configuration file in the "/etc/security/pwquality.conf.d/" directory: ucredit = -1