UBTU-20-010057 - The Ubuntu operating system must be configured so that when passwords are changed or new passwords are established, pwquality must be used - libpam-pwquality

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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.


Configure the operating system to use 'pwquality' to enforce password complexity rules.

Install the 'pam_pwquality' package by using the following command:

$ sudo apt-get install libpam-pwquality -y

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

enforcing = 1

Add the following line to '/etc/pam.d/common-password' (or modify the line to have the required value):

password requisite pam_pwquality.so retry=3

Note: The value of 'retry' should be between '1' and '3'.

See Also


Item Details

References: CAT|II, CCI|CCI-000366, Rule-ID|SV-238228r653859_rule, STIG-ID|UBTU-20-010057, Vuln-ID|V-238228

Plugin: Unix

Control ID: 8562ae6395025835a811a5f5d4681adfd10e813aadfe141356f159cd1f8fc3f8