TOSS 5 must enforce password complexity by requiring at least one special character.

Using 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 must be tested before the password is compromised. TOSS 5 uses "pwquality" as a mechanism to enforce password complexity. Note that to require special characters without degrading the "minlen" value, the credit value must be expressed as a negative number in "/etc/security/pwquality.conf".

Verify TOSS 5 enforces password complexity by requiring at least one special character using the following command:

$ sudo grep ocredit /etc/security/pwquality.conf /etc/security/pwquality.conf.d/*.conf 

ocredit = -1

If the value of "ocredit" is a positive number or is commented out, this is a finding.

Configure TOSS 5 to enforce password complexity by requiring at least one special character be used by setting the "ocredit" option.

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

ocredit = -1