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Guide to the Secure Configuration of SUSE Linux Enterprise 12

Rules, Groups, and Values defined within the XCCDF Benchmark

  • remember

    The last n passwords for each user are saved in <code>/etc/security/opasswd</code> in order to force password change history and keep the user from alternating between the same password too frequen...
    Value
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  • Disallow Configuration to Bypass Password Requirements for Privilege Escalation

    Verify the operating system is not configured to bypass password requirements for privilege escalation. Check the configuration of the "/etc/pam.d/sudo" file with the following command: <pre>$ sudo...
    Rule Medium Severity
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  • Set Up a Private Namespace in PAM Configuration

    To setup a private namespace add the following line to /etc/pam.d/login: 
    session    required     pam_namespace.so
    Rule Low Severity
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  • The PAM configuration should not be changed automatically

    Verify the SUSE operating system is configured to not overwrite Pluggable Authentication Modules (PAM) configuration on package changes.
    Rule Medium Severity
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  • Account Lockouts Must Persist

    By setting a `dir` in the faillock configuration account lockouts will persist across reboots.
    Rule Medium Severity
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  • Limit Password Reuse

    Do not allow users to reuse recent passwords. This can be accomplished by using the remember option for the pam_unix or pam_pwhistory PAM modules.
    Rule Medium Severity
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  • Enforce Delay After Failed Logon Attempts

    To configure the system to introduce a delay after failed logon attempts, add or correct the <code>pam_faildelay</code> settings in <code>/etc/pam.d/common-auth</code> to make sure its <code>delay<...
    Rule Medium Severity
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  • Account Lockouts Must Be Logged

    PAM faillock locks an account due to excessive password failures, this event must be logged.
    Rule Medium Severity
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  • Configure the root Account lock for Failed Password Attempts via pam_tally2

    This rule configures the system to lock out the root account after a number of incorrect login attempts using pam_tally2.so.
    Rule Medium Severity
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  • Set Lockout Time for Failed Password Attempts using pam_tally2

    This rule configures the system to lock out accounts during a specified time period after a number of incorrect login attempts using pam_tally2.so.
    Rule Medium Severity
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  • Set Password Quality Requirements

    The default <code>pam_pwquality</code> PAM module provides strength checking for passwords. It performs a number of checks, such as making sure passwords are not similar to dictionary words, are of...
    Group
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  • Require Authentication for Single User Mode

    Single-user mode is intended as a system recovery method, providing a single user root access to the system by providing a boot option at startup. <br> <br> By default, single-user mode is ...
    Rule Medium Severity
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  • dcredit

    Minimum number of digits in password
    Value
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  • Set Password Strength Minimum Digit Characters

    The pam_cracklib module's <code>dcredit</code> parameter controls requirements for usage of digits in a password. When set to a negative number, any password will be required to contain that many d...
    Rule Medium Severity
    Show

  • Set Password Strength Minimum Different Characters

    The pam_cracklib module's <code>difok</code> parameter controls requirements for usage of different characters during a password change. The number of changed characters refers to the number of cha...
    Rule Medium Severity
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  • Set Password Strength Minimum Lowercase Characters

    The pam_cracklib module's <code>lcredit=</code> parameter controls requirements for usage of lowercase letters in a password. When set to a negative number, any password will be required to contain...
    Rule Medium Severity
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  • Set Password Minimum Length

    The pam_cracklib module's <code>minlen</code> parameter controls requirements for minimum characters required in a password. Add <code>minlen=<xccdf-1.2:sub idref="xccdf_org.ssgproject.content_valu...
    Rule Medium Severity
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  • Set Password Strength Minimum Special Characters

    The pam_cracklib module's <code>ocredit=</code> parameter controls requirements for usage of special (or ``other'') characters in a password. When set to a negative number, any password will be req...
    Rule Medium Severity
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  • Set Password Retry Limit

    The pam_cracklib module's <code>retry</code> parameter controls the maximum number of times to prompt the user for the password before returning with error. Make sure it is configured with a value ...
    Rule Medium Severity
    Show

  • Set Password Strength Minimum Uppercase Characters

    The pam_cracklib module's <code>ucredit=</code> parameter controls requirements for usage of uppercase letters in a password. When set to a negative number, any password will be required to contain...
    Rule Medium Severity
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