SRG-OS-000078-GPOS-00046
The operating system must enforce a minimum 15-character password length.
Canonical Source
SV-203634r982202_rule ( from General Purpose Operating System Security Requirements Guide )Description
The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password. Use of more characters in a password helps to exponentially increase the time and/or resources required to compromise the password.