The SUSE operating system must enforce passwords that contain at least one lower-case character.

From SLES 12 Security Technical Implementation Guide

Associated with: CCI-000193

SV-91773r3_rule The SUSE operating system must enforce passwords that contain at least one lower-case 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 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.

Check content

Verify the SUSE operating system enforces password complexity by requiring that at least one lower-case character. Check that the operating system enforces password complexity by requiring that at least one lower-case character be used by using the following command: # grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so lcredit=-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 "lcredit=-1", this is a finding.

Fix text

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

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.