+AC-19 Access Control for Mobile Devices
---+AC-19(04) Restrictions for Classified Information
---+AC-19(05) Full Device or Container-based Encryption
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AC-19 Access Control for Mobile Devices
Control
- Establish configuration requirements, connection requirements, and implementation guidance for organization-controlled mobile devices, to include when such devices are outside of controlled areas; and
- Authorize the connection of mobile devices to organizational systems.
Discussion
A mobile device is a computing device that has a small form factor such that it can easily be carried by a single individual; is designed to operate without a physical connection; possesses local, non-removable or removable data storage; and includes a self-contained power source. Mobile device functionality may also include voice communication capabilities, on-board sensors that allow the device to capture information, and/or built-in features for synchronizing local data with remote locations. Examples include smart phones and tablets. Mobile devices are typically associated with a single individual. The processing, storage, and transmission capability of the mobile device may be comparable to or merely a subset of notebook/desktop systems, depending on the nature and intended purpose of the device. Protection and control of mobile devices is behavior or policy-based and requires users to take physical action to protect and control such devices when outside of controlled areas. Controlled areas are spaces for which organizations provide physical or procedural controls to meet the requirements established for protecting information and systems.
Due to the large variety of mobile devices with different characteristics and capabilities, organizational restrictions may vary for the different classes or types of such devices. Usage restrictions and specific implementation guidance for mobile devices include configuration management, device identification and authentication, implementation of mandatory protective software, scanning devices for malicious code, updating virus protection software, scanning for critical software updates and patches, conducting primary operating system (and possibly other resident software) integrity checks, and disabling unnecessary hardware.
Usage restrictions and authorization to connect may vary among organizational systems. For example, the organization may authorize the connection of mobile devices to its network and impose a set of usage restrictions, while a system owner may withhold authorization for mobile device connection to specific applications or impose additional usage restrictions before allowing mobile device connections to a system. Adequate security for mobile devices goes beyond the requirements specified in [AC-19](#ac-19) . Many safeguards for mobile devices are reflected in other controls. [AC-20](#ac-20) addresses mobile devices that are not organization-controlled.
Assessment Objective
- configuration requirements are established for organization-controlled mobile devices, including when such devices are outside of the controlled area;
- connection requirements are established for organization-controlled mobile devices, including when such devices are outside of the controlled area;
- implementation guidance is established for organization-controlled mobile devices, including when such devices are outside of the controlled area;
- the connection of mobile devices to organizational systems is authorized.
Assessment Method
Examine
Access control policy
procedures addressing access control for mobile device usage (including restrictions)
configuration management plan
system design documentation
system configuration settings and associated documentation
authorizations for mobile device connections to organizational systems
system audit records
system security plan
other relevant documents or records
Interview
Organizational personnel using mobile devices to access organizational systems
system/network administrators
organizational personnel with information security responsibilities
1. Přehled
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Standard |
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AC-19(04) Restrictions for Classified Information
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Control
- Prohibit the use of unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information unless specifically permitted by the authorizing official; and
- Enforce the following restrictions on individuals permitted by the authorizing official to use unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information:
- Connection of unclassified mobile devices to classified systems is prohibited;
- Connection of unclassified mobile devices to unclassified systems requires approval from the authorizing official;
- Use of internal or external modems or wireless interfaces within the unclassified mobile devices is prohibited; and
- Unclassified mobile devices and the information stored on those devices are subject to random reviews and inspections by [Assignement: security officials] , and if classified information is found, the incident handling policy is followed.
- Restrict the connection of classified mobile devices to classified systems in accordance with [Assignement: security policies].
Discussion
None.
Assessment Objective
- the use of unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information is prohibited unless specifically permitted by the authorizing official;
- prohibition of the connection of unclassified mobile devices to classified systems is enforced on individuals permitted by an authorizing official to use unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information;
- approval by the authorizing official for the connection of unclassified mobile devices to unclassified systems is enforced on individuals permitted to use unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information;
- prohibition of the use of internal or external modems or wireless interfaces within unclassified mobile devices is enforced on individuals permitted by an authorizing official to use unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information;
- random review and inspection of unclassified mobile devices and the information stored on those devices by [Assignement: security officials] are enforced;
- following of the incident handling policy is enforced if classified information is found during a random review and inspection of unclassified mobile devices;
- the connection of classified mobile devices to classified systems is restricted in accordance with [Assignement: security policies].
Assessment Method
Examine
Access control policy
incident handling policy
procedures addressing access control for mobile devices
system design documentation
system configuration settings and associated documentation
evidentiary documentation for random inspections and reviews of mobile devices
system audit records
system security plan
other relevant documents or records
Interview
Organizational personnel responsible for random reviews/inspections of mobile devices
organizational personnel using mobile devices in facilities containing systems processing, storing, or transmitting classified information
organizational personnel with incident response responsibilities
system/network administrators
organizational personnel with information security responsibilities
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AC-19(05) Full Device or Container-based Encryption
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Control
Employ [Selection: full-device encryption; container-based encryption] to protect the confidentiality and integrity of information on [Assignement: mobile devices].
Discussion
Container-based encryption provides a more fine-grained approach to data and information encryption on mobile devices, including encrypting selected data structures such as files, records, or fields.
Assessment Objective
[Selection: full-device encryption; container-based encryption] is employed to protect the confidentiality and integrity of information on [Assignement: mobile devices].
Assessment Method
Examine
Access control policy
procedures addressing access control for mobile devices
system design documentation
system configuration settings and associated documentation
encryption mechanisms and associated configuration documentation
system audit records
system security plan
other relevant documents or records
Interview
Organizational personnel with access control responsibilities for mobile devices
system/network administrators
organizational personnel with information security responsibilities
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1.1 Odkazy
1.2 Identifikované požadavky
1.3 Související regulace
2. Identifikované požadavky
Požadavky
| Zdroj |
Požadavek |
3. Související regulace
Propojené úkoly
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