Puppet Class: security_baseline::rules::common::sec_squashfs

Defined in:
manifests/rules/common/sec_squashfs.pp

Summary

Ensure mounting of squashfs filesystems is disabled (Scored)

Overview

The squashfs filesystem type is a compressed read-only Linux filesystem embedded in small footprint systems (similar to cramfs ). A squashfs image can be used without having to first decompress the image.

Rationale: Removing support for unneeded filesystem types reduces the local attack surface of the system. If this filesystem type is not needed, disable it.

Examples:

class security_baseline::rules::common::sec_squashfs {
    enforce => true,
    message => 'Test',
    log_level => 'info'
}

Parameters:

  • enforce (Boolean) (defaults to: true) —

    Enforce the rule or just test and log

  • message (String) (defaults to: '') —

    Message to print into the log

  • log_level (String) (defaults to: '') —

    The log_level for the above message



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# File 'manifests/rules/common/sec_squashfs.pp', line 29

class security_baseline::rules::common::sec_squashfs (
  Boolean $enforce = true,
  String $message = '',
  String $log_level = ''
) {
  if $enforce {
    kmod::install { 'squashfs':
      command => '/bin/true',
    }
  } else {
    if($facts['security_baseline']['kernel_modules']['squashfs']) {
      echo { 'squashfs':
        message  => $message,
        loglevel => $log_level,
        withpath => false,
      }
    }
  }
}