id: icloud_mail_disable
title: Disable iCloud Mail
discussion: |
  The macOS built-in Mail.app connection to Apple's iCloud service _MUST_ be disabled.

  Apple's iCloud service does not provide an organization with enough control over the storage and access of data and, therefore, automated mail synchronization _MUST_ be controlled by an organization approved service.
check: |
  /usr/bin/osascript -l JavaScript << EOS
  $.NSUserDefaults.alloc.initWithSuiteName('com.apple.applicationaccess')\
  .objectForKey('allowCloudMail').js
  EOS
result:
  string: 'false'
fix: |
  This is implemented by a Configuration Profile.
references:
  cce:
    - CCE-94148-4
  cci:
    - CCI-000381
    - CCI-001774
  800-53r5:
    - AC-20
    - AC-20(1)
    - CM-7
    - CM-7(1)
    - SC-7(10)
  800-53r4:
    - CM-7
    - CM-7(1)
    - AC-20
    - AC-20(1)
  srg:
    - SRG-OS-000095-GPOS-00049
  disa_stig:
    - APPL-15-002015
  800-171r3:
    - 03.01.20
    - 03.04.06
  cis:
    benchmark:
      - N/A
    controls v8:
      - 4.1
      - 4.8
      - 15.3
  cmmc:
    - AC.L1-3.1.20
    - CM.L2-3.4.6
    - CM.L2-3.4.7
macOS:
  - '15.0'
tags:
  - 800-53r5_low
  - 800-53r5_moderate
  - 800-53r5_high
  - 800-53r4_low
  - 800-53r4_moderate
  - 800-53r4_high
  - 800-171
  - cisv8
  - cnssi-1253_low
  - cnssi-1253_high
  - cmmc_lvl2
  - cmmc_lvl1
  - stig
  - cnssi-1253_moderate
severity: medium
mobileconfig: true
mobileconfig_info:
  com.apple.applicationaccess:
    allowCloudMail: false
