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 +##

si-10(5)

information input validation  | restrict inputs to trusted sources and approved formats

assessment objective:

Determine if the organization:

si-10(5)[1]

defines trusted sources to which the use of information inputs is to be restricted;

si-10(5)[2]

defines formats to which the use of information inputs is to be restricted;

si-10(5)[3]

restricts the use of information inputs to:

si-10(5)[3][a]

organization-defined trust sources; and/or

si-10(5)[3][b]

organization-defined formats.

potential assessment methods and objects:

Examine: [select from: System and information integrity policy; procedures addressing information input validation; information system design documentation; information system configuration settings and associated documentation; list of trusted sources for information inputs; list of acceptable formats for input restrictions; information system audit records; other relevant documents or records].

Interview: [select from: Organizational personnel with responsibility for information input validation; organizational personnel with information security responsibilities; system/network administrators; system developer].

Test: [select from: Organizational processes for restricting information inputs; automated mechanisms supporting and/or implementing restriction of information inputs].