Applicable (Y)es / (N)o |
(C)onfidentiality |
(I)ntegrity |
(A)vailability |
RPN (C+I+A) |
(S)atisfactory |
||||||
L1 |
M2 |
H3 |
L1 |
M2 |
H3 |
L1 |
M2 |
H3 |
(O)ther than satisfactory +## |
||
|
|
|
|
|
|
|
|
|
|
|
|
###
ac-25 |
reference monitor |
|
|
assessment objective: Determine if: |
|
ac-25[1] |
the organization defines access control policies for which the information system implements a reference monitor to enforce such policies; and |
|
ac-25[2] |
the information system implements a reference monitor for organization-defined access control policies that is tamperproof, always invoked, and small enough to be subject to analysis and testing, the completeness of which can be assured. |
|
potential assessment methods and objects: Examine: [select from: Access control policy; procedures addressing access enforcement; information system design documentation; information system configuration settings and associated documentation; information system audit records; other relevant documents or records]. Interview: [select from: Organizational personnel with access enforcement responsibilities; system/network administrators; organizational personnel with information security responsibilities; system developers]. Test: [select from: Automated mechanisms implementing access enforcement functions]. |