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Assessment Title
Rule Text
Databases utilizing Discretionary Access Control (DAC) must enforce a policy that limits propagation of access rights.
Description
Discussion Text
Discretionary Access Control (DAC) is based on the premise that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which mode (e.g., read or write). Ownership is usually acquired as a consequence of creating the object or via specified ownership assignment.
DAC allows the owner to determine who will have access to objects they control. An example of DAC includes user-controlled file permissions. DAC models have the potential for the access controls to propagate without limit, resulting in unauthorized access to said objects.
When applications provide a discretionary access control mechanism, the application must be able to limit the propagation of those access rights.
The DBMS must ensure the recipient of permissions possesses only the access intended. The database must enforce the ability to limit rights propagation if that is the intent of the grantor. If the propagation of access rights is not limited, users with rights to objects they do not own can continue to grant rights to those objects to other users without limit.
This is default behavior for Oracle.
DAC allows the owner to determine who will have access to objects they control. An example of DAC includes user-controlled file permissions. DAC models have the potential for the access controls to propagate without limit, resulting in unauthorized access to said objects.
When applications provide a discretionary access control mechanism, the application must be able to limit the propagation of those access rights.
The DBMS must ensure the recipient of permissions possesses only the access intended. The database must enforce the ability to limit rights propagation if that is the intent of the grantor. If the propagation of access rights is not limited, users with rights to objects they do not own can continue to grant rights to those objects to other users without limit.
This is default behavior for Oracle.
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