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Guidance for NIST 800-171 Assessment & Compliance

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 +##

 

 

 

 

 

 

 

 

 

 

 

 

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si-2

flaw remediation

 

assessment objective:

Determine if the organization:

si-2(a)

si-2(a)[1]

identifies information system flaws;

si-2(a)[2]

reports information system flaws;

si-2(a)[3]

corrects information system flaws;

si-2(b)

si-2(b)[1]

tests software updates related to flaw remediation for effectiveness and potential side effects before installation;

si-2(b)[2]

tests firmware updates related to flaw remediation for effectiveness and potential side effects before installation;

si-2(c)

si-2(c)[1]

defines the time period within which to install security-relevant software updates after the release of the updates;

si-2(c)[2]

defines the time period within which to install security-relevant firmware updates after the release of the updates;

si-2(c)[3]

installs software updates within the organization-defined time period of the release of the updates;

si-2(c)[4]

installs firmware updates within the organization-defined time period of the release of the updates; and

si-2(d)

incorporates flaw remediation into the organizational configuration management process.

potential assessment methods and objects:

Examine: [select from: System and information integrity policy; procedures addressing flaw remediation; procedures addressing configuration management; list of flaws and vulnerabilities potentially affecting the information system; list of recent security flaw remediation actions performed on the information system (e.g., list of installed patches, service packs, hot fixes, and other software updates to correct information system flaws); test results from the installation of software and firmware updates to correct information system flaws; installation/change control records for security-relevant software and firmware updates; other relevant documents or records].

Interview: [select from: System/network administrators; organizational personnel with information security responsibilities; organizational personnel installing, configuring, and/or maintaining the information system; organizational personnel with responsibility for flaw remediation; organizational personnel with configuration management responsibility].

Test: [select from: Organizational processes for identifying, reporting, and correcting information system flaws; organizational process for installing software and firmware updates; automated mechanisms supporting and/or implementing reporting, and correcting information system flaws; automated mechanisms supporting and/or implementing testing software and firmware updates].

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