STIGQter: STIG Summary: Microsoft IIS 8.5 Server Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

The production IIS 8.5 web server must utilize SHA2 encryption for the Machine Key.

DISA Rule

SV-214422r508658_rule

Vulnerability Number

V-214422

Group Title

SRG-APP-000231-WSR-000144

Rule Version

IISW-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

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

Open the IIS 8.5 Manager.

Click the IIS 8.5 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

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

Open the IIS 8.5 Manager.

Click the IIS 8.5 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.

Vulnerability Number

V-214422

Documentable

False

Rule Version

IISW-SV-000137

Severity Override Guidance

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

Open the IIS 8.5 Manager.

Click the IIS 8.5 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.

Check Content Reference

M

Target Key

4000

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