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Guide to the Secure Configuration of SUSE Linux Enterprise 15

Rules, Groups, and Values defined within the XCCDF Benchmark

  • AppArmor profiles mode

    enforce - Set all AppArmor profiles to enforce mode
    complain - Set all AppArmor profiles to complain mode
    Value
  • Install the pam_apparmor Package

    The pam_apparmor package can be installed with the following command:
    $ sudo zypper install pam_apparmor
    Rule Medium Severity
  • Resolve information before writing to audit logs

    To configure Audit daemon to resolve all uid, gid, syscall, architecture, and socket address information before writing the events to disk, set <code>log_format</code> to <code>ENRICHED</code> in <...
    Rule Low Severity
  • Write Audit Logs to the Disk

    To configure Audit daemon to write Audit logs to the disk, set write_logs to yes in /etc/audit/auditd.conf. This is the default setting.
    Rule Medium Severity
  • Ensure Users Re-Authenticate for Privilege Escalation - sudo NOPASSWD

    The sudo <code>NOPASSWD</code> tag, when specified, allows a user to execute commands using sudo without having to authenticate. This should be disabled by making sure that the <code>NOPASSWD</code...
    Rule Medium Severity
  • Verify that Shared Library Files Have Root Ownership

    System-wide shared library files, which are linked to executables during process load time or run time, are stored in the following directories by default: <pre>/lib /lib64 /usr/lib /usr/lib64 </pr...
    Rule Medium Severity
  • Verify Permissions On /etc/sudoers File

    To properly set the permissions of /etc/sudoers, run the command:
    $ sudo chmod 0440 /etc/sudoers
    Rule Medium Severity
  • Ensure That the sudo Binary Has the Correct Permissions

    To properly set the permissions of /usr/bin/sudo, run the command:
    $ sudo chmod 4111 /usr/bin/sudo
    Rule Medium Severity
  • Ensure sudo passwd_timeout is appropriate - sudo passwd_timeout

    The sudo <code>passwd_timeout</code> tag sets the amount of time sudo password prompt waits. The passwd_timeout should be configured by making sure that the <code>passwd_timeout=<xccdf-1.2:sub idre...
    Rule Medium Severity
  • Verify Permissions On /etc/sysctl.d Directory

    To properly set the permissions of /etc/sysctl.d, run the command:
    $ sudo chmod 0755 /etc/sysctl.d
    Rule Medium Severity

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