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Guide to the Secure Configuration of Red Hat Enterprise Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Require Re-Authentication When Using the sudo Command

    The sudo <code>timestamp_timeout</code> tag sets the amount of time sudo password prompt waits. The default <code>timestamp_timeout</code> value is...
    Rule Medium Severity
  • Ensure only owner and members of group owner of /usr/bin/sudo can execute it

    Remove the execute permission bit of <code>/etc/bin/sudo</code> for the other users. To properly set the permissions of <code>/usr/bin/sudo</code>...
    Rule Medium Severity
  • The operating system must restrict privilege elevation to authorized personnel

    The sudo command allows a user to execute programs with elevated (administrator) privileges. It prompts the user for their password and confirms yo...
    Rule Medium Severity
  • Only the VDSM User Can Use sudo NOPASSWD

    The sudo <code>NOPASSWD</code> tag, when specified, allows a user to execute commands using sudo without having to authenticate. Only the <code>vds...
    Rule Medium Severity
  • Ensure sudo only includes the default configuration directory

    Administrators can configure authorized <code>sudo</code> users via drop-in files, and it is possible to include other directories and configuratio...
    Rule Medium Severity
  • Explicit arguments in sudo specifications

    All commands in the sudoers file must strictly specify the arguments allowed to be used for a given user. If the command is supposed to be executed...
    Rule Medium Severity
  • Don't define allowed commands in sudoers by means of exclusion

    Policies applied by sudo through the sudoers file should not involve negation. Each user specification in the <code>sudoers</code> file contains a...
    Rule Medium Severity
  • Uninstall krb5-workstation Package

    The krb5-workstation package can be removed with the following command:
    $ sudo yum erase krb5-workstation
    Rule Medium Severity
  • Uninstall libreport-plugin-logger Package

    The libreport-plugin-logger package can be removed with the following command:
    $ sudo yum erase libreport-plugin-logger
    Rule Low Severity
  • Don't target root user in the sudoers file

    The targeted users of a user specification should be, as much as possible, non privileged users (i.e.: non-root). User specifications have to expl...
    Rule Medium Severity

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