Finding ID | Version | Rule ID | IA Controls | Severity |
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V-22306 | GEN000750 | SV-44881r1_rule | IAIA-1 IAIA-2 | Medium |
Description |
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To ensure password changes are effective in their goals, the system must ensure that old and new passwords have significant differences. Without significant changes, new passwords may be easily guessed based on the value of a previously compromised password. |
STIG | Date |
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SUSE Linux Enterprise Server v11 for System z | 2015-01-26 |
Check Text ( C-42335r1_chk ) |
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Check /etc/pam.d/system-auth for a pam_cracklib parameter difok. Procedure: # grep difok /etc/pam.d/common-password If difok is not present, or has a value less than 4, this is a finding. Check for common-password-pc inclusions. # grep -c common-password-pc /etc/pam.d/* If the common-password-pc file is included anywhere # more /etc/pam.d/common-password-pc | grep difok If common-password-pc is included anywhere and difok is not present, or has a value less than 4, this is a finding. Ensure the passwd command uses the common-password settings. # grep common-password /etc/pam.d/passwd If a line "password include common-password" is not found then the password checks in common-password will not be applied to new passwords. |
Fix Text (F-38313r1_fix) |
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Edit /etc/pam.d/common-password and add or edit a pam_cracklib entry with a difok parameter set equal to or greater than 4. |