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DRAFT - PCI-DSS v4.0.1 Control Baseline for Red Hat Enterprise Linux 10

Rules and Groups employed by this XCCDF Profile

  • Verify /boot/grub2/user.cfg User Ownership

    The file <code>/boot/grub2/user.cfg</code> should be owned by the <code>root</code> user to prevent reading or modification of the file. To properly set the owner of <code>/boot/grub2/user.cfg</co...
    Rule Medium Severity
  • Verify /boot/grub2/grub.cfg Permissions

    File permissions for <code>/boot/grub2/grub.cfg</code> should be set to 600. To properly set the permissions of <code>/boot/grub2/grub.cfg</code>, run the command: <pre>$ sudo chmod 600 /boot/grub...
    Rule Medium Severity
  • Verify /boot/grub2/user.cfg Permissions

    File permissions for <code>/boot/grub2/user.cfg</code> should be set to 600. To properly set the permissions of <code>/boot/grub2/user.cfg</code>, run the command: <pre>$ sudo chmod 600 /boot/grub...
    Rule Medium Severity
  • Configure Syslog

    The syslog service has been the default Unix logging mechanism for many years. It has a number of downsides, including inconsistent log format, lack of authentication for received messages, and lac...
    Group
  • Ensure Proper Configuration of Log Files

    The file <code>/etc/rsyslog.conf</code> controls where log message are written. These are controlled by lines called <i>rules</i>, which consist of a <i>selector</i> and an <i>action</i>. These rul...
    Group
  • Ensure Log Files Are Owned By Appropriate Group

    The group-owner of all log files written by <code>rsyslog</code> should be <code>root</code>. These log files are determined by the second part of each Rule line in <code>/etc/rsyslog.conf</code> a...
    Rule Medium Severity
  • Ensure Log Files Are Owned By Appropriate User

    The owner of all log files written by <code>rsyslog</code> should be <code>root</code>. These log files are determined by the second part of each Rule line in <code>/etc/rsyslog.conf</code> and t...
    Rule Medium Severity
  • Ensure System Log Files Have Correct Permissions

    The file permissions for all log files written by <code>rsyslog</code> should be set to 640, or more restrictive. These log files are determined by the second part of each Rule line in <code>/etc/r...
    Rule Medium Severity
  • Ensure All Logs are Rotated by logrotate

    Edit the file <code>/etc/logrotate.d/syslog</code>. Find the first line, which should look like this (wrapped for clarity): <pre>/var/log/messages /var/log/secure /var/log/maillog /var/log/spoole...
    Group
  • Ensure logrotate is Installed

    logrotate is installed by default. The logrotate package can be installed with the following command:
     $ sudo dnf install logrotate
    Rule Medium Severity
  • Enable logrotate Timer

    The logrotate timer can be enabled with the following command:
    $ sudo systemctl enable logrotate.timer
    Rule Medium Severity
  • Network Configuration and Firewalls

    Most systems must be connected to a network of some sort, and this brings with it the substantial risk of network attack. This section discusses the security impact of decisions about networking wh...
    Group
  • Prevent non-Privileged Users from Modifying Network Interfaces using nmcli

    By default, non-privileged users are given permissions to modify networking interfaces and configurations using the <code>nmcli</code> command. Non-privileged users should not be making configurati...
    Rule Medium Severity
  • Ensure System is Not Acting as a Network Sniffer

    The system should not be acting as a network sniffer, which can capture all traffic on the network to which it is connected. Run the following to determine if any interface is running in promiscuou...
    Rule Medium Severity
  • firewalld

    The dynamic firewall daemon <code>firewalld</code> provides a dynamically managed firewall with support for network “zones” to assign a level of trust to a network and its associated connections an...
    Group
  • Inspect and Activate Default firewalld Rules

    Firewalls can be used to separate networks into different zones based on the level of trust the user has decided to place on the devices and traffic within that network. <code>NetworkManager</code>...
    Group
  • Install firewalld Package

    The firewalld package can be installed with the following command:
    $ sudo dnf install firewalld
    Rule Medium Severity
  • Verify firewalld Enabled

    The firewalld service can be enabled with the following command:
    $ sudo systemctl enable firewalld.service
    Rule Medium Severity
  • Strengthen the Default Ruleset

    The default rules can be strengthened. The system scripts that activate the firewall rules expect them to be defined in configuration files under the <code>/etc/firewalld/services</code> and <code>...
    Group
  • Configure the Firewalld Ports

    Configure the <code>firewalld</code> ports to allow approved services to have access to the system. To configure <code>firewalld</code> to open ports, run the following command: <pre>firewall-cmd -...
    Rule Medium Severity

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