STIGQter: STIG Summary: Microsoft IIS 10.0 Server Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

The production IIS 10.0 web server must utilize SHA2 encryption for the Machine Key.

DISA Rule

SV-218807r561041_rule

Vulnerability Number

V-218807

Group Title

SRG-APP-000231-WSR-000144

Rule Version

IIST-SV-000137

Severity

CAT II

CCI(s)

• CCI-001199 - The information system protects the confidentiality and/or integrity of organization-defined information at rest.

Weight

10

Fix Recommendation

Open the IIS 10.0 Manager.

Click the IIS 10.0 web server name.

Double-click the "Machine Key" icon in the web server Home Pane.

Set the Validation method to "HMACSHA256" or stronger.
Set the Encryption method to "Auto".

Click "Apply" in the "Actions" pane.

Check Contents

Open the IIS 10.0 Manager.

Click the IIS 10.0 web server name.

Double-click the "Machine Key" icon in the website Home Pane.

Verify "HMACSHA256" or stronger encryption is selected for the Validation method and "Auto" is selected for the Encryption method.

If "HMACSHA256" or stronger encryption is not selected for the Validation method and/or "Auto" is not selected for the Encryption method, this is a finding.

If .NET is not installed, this is Not Applicable.

Vulnerability Number

V-218807

Documentable

False

Rule Version

IIST-SV-000137

Severity Override Guidance

Open the IIS 10.0 Manager.

Click the IIS 10.0 web server name.

Double-click the "Machine Key" icon in the website Home Pane.

Verify "HMACSHA256" or stronger encryption is selected for the Validation method and "Auto" is selected for the Encryption method.

If "HMACSHA256" or stronger encryption is not selected for the Validation method and/or "Auto" is not selected for the Encryption method, this is a finding.

If .NET is not installed, this is Not Applicable.

Check Content Reference

M

Target Key

4052

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