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Guide to the Secure Configuration of Red Hat Enterprise Linux CoreOS 4

Rules, Groups, and Values defined within the XCCDF Benchmark

  • difok

    Minimum number of characters not present in old password
    Value
    Show

  • lcredit

    Minimum number of lower case in password
    Value
    Show

  • maxclassrepeat

    Maximum Number of Consecutive Repeating Characters in a Password From the Same Character Class
    Value
    Show

  • maxrepeat

    Maximum Number of Consecutive Repeating Characters in a Password
    Value
    Show

  • minclass

    Minimum number of categories of characters that must exist in a password
    Value
    Show

  • minlen

    Minimum number of characters in password
    Value
    Show

  • ocredit

    Minimum number of other (special characters) in password
    Value
    Show

  • retry

    Number of retry attempts before erroring out
    Value
    Show

  • ucredit

    Minimum number of upper case in password
    Value
    Show

  • Set Password Hashing Algorithm

    The system's default algorithm for storing password hashes in /etc/shadow is SHA-512. This can be configured in several locations.
    Group
    Show

  • Protect Physical Console Access

    It is impossible to fully protect a system from an attacker with physical access, so securing the space in which the system is located should be co...
    Group
    Show

  • Login timeout for idle sessions

    Specify duration of allowed idle time.
    Value
    Show

  • Disable debug-shell SystemD Service

    SystemD's <code>debug-shell</code> service is intended to diagnose SystemD related boot issues with various <code>systemctl</code> commands. Once e...
    Rule Medium Severity
    Show

  • Verify that Interactive Boot is Disabled

    Red Hat Enterprise Linux CoreOS 4 systems support an "interactive boot" option that can be used to prevent services from being started. On a Red Ha...
    Rule Medium Severity
    Show

  • Ensure there are no legacy + NIS entries in /etc/group

    The <code>+</code> character in <code>/etc/group</code> file marks a place where entries from a network information service (NIS) should be directl...
    Rule Medium Severity
    Show

  • Disable Ctrl-Alt-Del Burst Action

    By default, <code>SystemD</code> will reboot the system if the <code>Ctrl-Alt-Del</code> key sequence is pressed Ctrl-Alt-Delete more than 7 times ...
    Rule High Severity
    Show

  • Disable Ctrl-Alt-Del Reboot Activation

    By default, <code>SystemD</code> will reboot the system if the <code>Ctrl-Alt-Del</code> key sequence is pressed. <br><br> To configure the system ...
    Rule High Severity
    Show

  • Verify that Interactive Boot is Disabled

    Red Hat Enterprise Linux CoreOS 4 systems support an "interactive boot" option that can be used to prevent services from being started. On a Red Ha...
    Rule Medium Severity
    Show

  • 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. ...
    Rule Medium Severity
    Show

  • Configure Screen Locking

    When a user must temporarily leave an account logged-in, screen locking should be employed to prevent passersby from abusing the account. User educ...
    Group
    Show

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