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

Unspecified file extensions on a production IIS 8.5 web server must be removed.

DISA Rule

SV-214440r508658_rule

Vulnerability Number

V-214440

Group Title

SRG-APP-000516-WSR-000174

Rule Version

IISW-SV-000158

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Open the IIS 8.5 Manager.

Click the IIS 8.5 web server name.

Double-click the "ISAPI and CGI restrictions" icon.

Click "Edit Feature Settings".

Remove the check from the "Allow unspecified CGI modules" and the "Allow unspecified ISAPI modules" check boxes.

Click OK.

Check Contents

Open the IIS 8.5 Manager.

Click the IIS 8.5 web server name.

Double-click the "ISAPI and CGI restrictions" icon.

Click “Edit Feature Settings".

Verify the "Allow unspecified CGI modules" and the "Allow unspecified ISAPI modules" check boxes are NOT checked.

If either or both of the "Allow unspecified CGI modules" and the "Allow unspecified ISAPI modules" check boxes are checked, this is a finding.

Vulnerability Number

V-214440

Documentable

False

Rule Version

IISW-SV-000158

Severity Override Guidance

Open the IIS 8.5 Manager.

Click the IIS 8.5 web server name.

Double-click the "ISAPI and CGI restrictions" icon.

Click “Edit Feature Settings".

Verify the "Allow unspecified CGI modules" and the "Allow unspecified ISAPI modules" check boxes are NOT checked.

If either or both of the "Allow unspecified CGI modules" and the "Allow unspecified ISAPI modules" check boxes are checked, this is a finding.

Check Content Reference

M

Target Key

4000

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