Force opensc To Use Defined Smart Card Driver

An XCCDF Rule

Description

The OpenSC smart card middleware can auto-detect smart card drivers; however by forcing the smart card driver in use by your organization, opensc will no longer autodetect or use other drivers unless specified. This helps to prevent users from using unauthorized smart cards. The default smart card driver for this profile is . To force the OpenSC driver, edit the /etc/opensc.conf. Look for a line similar to:

# force_card_driver = customcos;

and change it to:

force_card_driver = ;

Rationale

Smart card login provides two-factor authentication stronger than that provided by a username and password combination. Smart cards leverage PKI (public key infrastructure) in order to provide and verify credentials. Forcing the smart card driver in use by your organization helps to prevent users from using unauthorized smart cards.

ID: xccdf_org.ssgproject.content_rule_force_opensc_card_drivers
Severity: Medium
References: 1 12 15 16 5

DSS05.04 DSS05.05 DSS05.07 DSS05.10 DSS06.03 DSS06.10

CCI-000765 CCI-000766 CCI-000767 CCI-000768 CCI-000771 CCI-000772 CCI-000884

4.3.3.2.2 4.3.3.5.1 4.3.3.5.2 4.3.3.6.1 4.3.3.6.2 4.3.3.6.3 4.3.3.6.4 4.3.3.6.5 4.3.3.6.6 4.3.3.6.7 4.3.3.6.8 4.3.3.6.9 4.3.3.7.2 4.3.3.7.4

SR 1.1 SR 1.10 SR 1.2 SR 1.3 SR 1.4 SR 1.5 SR 1.7 SR 1.8 SR 1.9 SR 2.1

1382 1384 1386

A.18.1.4 A.7.1.1 A.9.2.1 A.9.2.2 A.9.2.3 A.9.2.4 A.9.2.6 A.9.3.1 A.9.4.2 A.9.4.3

CM-6(a) IA-2(1) IA-2(11) IA-2(2) IA-2(3) IA-2(4) IA-2(6) IA-2(7)

PR.AC-1 PR.AC-6 PR.AC-7

Req-8.3

SRG-OS-000104-GPOS-00051 SRG-OS-000106-GPOS-00053 SRG-OS-000107-GPOS-00054 SRG-OS-000108-GPOS-00055 SRG-OS-000108-GPOS-00057 SRG-OS-000108-GPOS-00058 SRG-OS-000109-GPOS-00056

CCE-85827-4
Updated: about 1 year ago

- name: XCCDF Value var_smartcard_drivers # promote to variable
  set_fact:
    var_smartcard_drivers: !!str <xccdf-1.2:sub xmlns:xccdf-1.2="http://checklists.nist.gov/xccdf/1.2" idref="xccdf_org.ssgproject.content_value_var_smartcard_drivers" use="legacy"/>
  tags:
    - always
- name: Check existence of opensc conf
  stat:
    path: /etc/opensc.conf
  register: opensc_conf_fcd
  when: ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  tags:
  - CCE-85827-4
  - NIST-800-53-CM-6(a)
  - NIST-800-53-IA-2(1)
  - NIST-800-53-IA-2(11)
  - NIST-800-53-IA-2(2)
  - NIST-800-53-IA-2(3)
  - NIST-800-53-IA-2(4)
  - NIST-800-53-IA-2(6)
  - NIST-800-53-IA-2(7)
  - PCI-DSS-Req-8.3
  - configure_strategy
  - force_opensc_card_drivers
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Force smartcard driver block
  block:

  - name: Check if force_card_driver is defined
    command: /usr/bin/opensc-tool -G app:default:force_card_driver
    changed_when: false
    register: force_card_driver

  - name: Force opensc To Use Defined Smart Card Driver
    command: |
      /usr/bin/opensc-tool -S app:default:force_card_driver:{{ var_smartcard_drivers }}
    when:
    - force_card_driver.stdout != var_smartcard_drivers
  when:
  - ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  - opensc_conf_fcd.stat.exists
  tags:
  - CCE-85827-4
  - NIST-800-53-CM-6(a)
  - NIST-800-53-IA-2(1)
  - NIST-800-53-IA-2(11)
  - NIST-800-53-IA-2(2)
  - NIST-800-53-IA-2(3)
  - NIST-800-53-IA-2(4)
  - NIST-800-53-IA-2(6)
  - NIST-800-53-IA-2(7)
  - PCI-DSS-Req-8.3
  - configure_strategy
  - force_opensc_card_drivers
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

# Remediation is applicable only in certain platforms
if [ ! -f /.dockerenv ] && [ ! -f /run/.containerenv ]; then

var_smartcard_drivers='<xccdf-1.2:sub xmlns:xccdf-1.2="http://checklists.nist.gov/xccdf/1.2" idref="xccdf_org.ssgproject.content_value_var_smartcard_drivers" use="legacy"/>'

OPENSC_TOOL="/usr/bin/opensc-tool"

if [ -f "${OPENSC_TOOL}" ]; then
    ${OPENSC_TOOL} -S app:default:force_card_driver:$var_smartcard_drivers
fi

else
    >&2 echo 'Remediation is not applicable, nothing was done'
fi

Force opensc To Use Defined Smart Card Driver

Description

Rationale

Remediation - Ansible

Remediation - Shell Script