Non-discretionary access control

{
  "id": "MLC-T-CYB-002860",
  "term": "Non-discretionary access control",
  "field": "Cybersecurity",
  "definition": "1. A means of restricting access to objects based on the sensitivity (as represented by a security label) of the information contained in the objects and the formal authorization (i.e., clearance, formal access approvals, and need-to-know) of subjects to access information of such sensitivity. Mandatory Access Control is a type of nondiscretionary access control.\n\n2. An access control policy that is uniformly enforced across all subjects and objects within the boundary of an information system. A subject that has been granted access to information is constrained from doing any of the following: (i) passing the information to unauthorized subjects or objects; (ii) granting its privileges to other subjects; (iii) changing one or more security attributes on subjects, objects, the information system, or system components; (iv) choosing the security attributes to be associated with newly-created or modified objects; or (v) changing the rules governing access control. Organization-defined subjects may explicitly be granted organization-defined privileges (i.e., they are trusted subjects) such that they are not limited by some or all of the above constraints.\n\n3. See mandatory access control (MAC).\n\n4. A means of restricting access to system resources based on the sensitivity (as represented by a label) of the information contained in the system resource and the formal authorization (i.e., clearance) of users to access information of such sensitivity.\n\n5. See Mandatory Access Control.",
  "abbreviation": "NDAC",
  "synonyms": [
    "Mandatory Access Control",
    "mandatory access control (MAC)"
  ],
  "references": [
    "NIST SP 800-53 Rev. 4 [Superseded] from CNSSI 4009",
    "CNSSI 4009-2015 from NIST SP 800-53 Rev. 4; NIST SP 800-53 Rev. 4 [Superseded]",
    "CNSSI 4009-2015",
    "NIST SP 800-44 Version 2",
    "NIST SP 800-53 Rev. 4 [Superseded]; NIST SP 800-53 Rev. 5",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/non-discretionary-access-control/"
}