Title

Redis Enterprise DBMS must enforce discretionary access control policies, as defined by the data owner, over defined subjects and objects. (Cat II impact)

Discussion

Discretionary Access Control (DAC) is based on the notion 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 table permissions. When discretionary access control policies are implemented, subjects are not constrained with regard to what actions they can take with information for which they have already been granted access. Thus, subjects that have been granted access to information are not prevented from passing (i.e., the subjects have the discretion to pass) the information to other subjects or objects. A subject that is constrained in its operation by Mandatory Access Control policies is still able to operate under the less rigorous constraints of this requirement. Thus, while Mandatory Access Control imposes constraints preventing a subject from passing information to another subject operating at a different sensitivity level, this requirement permits the subject to pass the information to any subject at the same sensitivity level. The policy is bounded by the information system boundary. Once the information is passed outside of the control of the information system, additional means may be required to ensure the constraints remain in effect. While the older, more traditional definitions of discretionary access control require identity-based access control, that limitation is not required for this use of discretionary access control.

Check Content

Redis Enterprise discretionary access control is configured through the use of individual roles. Verify that enforcement of role-based access control (RBAC) is implemented. Review the system documentation to determine if accounts have been set with appropriate, organizationally defined Discretionary Access Control permissions. Compare these settings with the settings on the actual DB. 1. Log in to Redis Enterprise. 2. Navigate to the access controls tab. 3. Verify that each user is assigned a role. If a user is not assigned an appropriate role, this is a finding. If the appropriate access is not assigned to a user, or the access and permission settings are not documented, this is a finding.

Fix Text

To assign a user to a role: 1. Log in to Redis Enterprise as an admin user. 2. Navigate to the access controls tab. 3. Ensure that each user is assigned a role according to organizationally defined policy. To configure a Redis ACL rule that can be assigned to a user role: 1. Navigate to access control >> redis acls. 2. Edit an existing Redis ACL by hovering over a Redis ACL and clicking "Edit". 3. Create a new Redis ACL by clicking "Add". 4. Enter a descriptive name for the Redis ACL. This will be used to reference the ACL rule to the role. 5. Define the ACL rule. 6. Click "Save". For more information: https://docs.redislabs.com/latest/rs/security/passwords-users-roles/

Additional Identifiers

Rule ID: SV-251186r961317_rule

Vulnerability ID: V-251186

Group Title: SRG-APP-000328-DB-000301

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.