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 +##

cm-5(3)

access restrictions for change  | signed components

assessment objective:

Determine if:

cm-5(3)[1]

the organization defines software and firmware components that the information system will prevent from being installed without verification that such components have been digitally signed using a certificate that is recognized and approved by the organization; and

cm-5(3)[2]

the information system prevents the installation of organization-defined software and firmware components without verification that such components have been digitally signed using a certificate that is recognized and approved by the organization.

potential assessment methods and objects:

Examine: [select from: Configuration management policy; procedures addressing access restrictions for changes to the information system; configuration management plan; security plan; list of software and firmware components to be prohibited from installation without a recognized and approved certificate; information system design documentation; information system architecture and configuration documentation; information system configuration settings and associated documentation; change control records; information system audit records; other relevant documents or records].

Interview: [select from: Organizational personnel with information security responsibilities; system/network administrators; system developers].

Test: [select from: Organizational processes for managing access restrictions to change; automated mechanisms preventing installation of software and firmware components not signed with an organization-recognized and approved certificate].