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Guide to the Secure Configuration of Amazon Linux 2023

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Uninstall setroubleshoot Package

    The SETroubleshoot service notifies desktop users of SELinux denials. The service provides information around configuration errors, unauthorized intrusions, and other potential errors. The <code>se...
    Rule Low Severity
  • Ensure SELinux Not Disabled in /etc/default/grub

    SELinux can be disabled at boot time by an argument in <code>/etc/default/grub</code>. Remove any instances of <code>selinux=0</code> from the kernel arguments in that file to prevent SELinux from ...
    Rule Medium Severity
  • Verify Permissions on shadow File

    To properly set the permissions of /etc/shadow, run the command:
    $ sudo chmod 0000 /etc/shadow
    Rule Medium Severity
  • Verify File Permissions Within Some Important Directories

    Some directories contain files whose confidentiality or integrity is notably important and may also be susceptible to misconfiguration over time, particularly if unpackaged software is installed. A...
    Group
  • Add noexec Option to /tmp

    The <code>noexec</code> mount option can be used to prevent binaries from being executed out of <code>/tmp</code>. Add the <code>noexec</code> option to the fourth column of <code>/etc/fstab</code>...
    Rule Medium Severity

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