The SUSE operating system must enforce passwords that contain at least one special character.

From SLES 12 Security Technical Implementation Guide

Associated with: CCI-001619

SV-91777r3_rule The SUSE operating system must enforce passwords that contain at least one special character.

Vulnerability discussion

Use of a complex password helps 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 in determining 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.Special characters are not alphanumeric. Examples include: ~ ! @ # $ % ^ *.

Check content

Verify the SUSE operating system enforces password complexity by requiring that at least one special character. Check that the operating system enforces password complexity by requiring that at least one special character be used by using the following command: # grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so ocredit=-1 If the command does not return anything, the returned line is commented out, or has a second column value different from "requisite", or does not contain "ocredit=-1", this is a finding.

Fix text

Configure the SUSE operating system to enforce password complexity by requiring at least one special character. Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "ocredit=-1" after the third column.

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