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

Mappings to unused and vulnerable scripts on the IIS 10.0 website must be removed.

DISA Rule

SV-218744r558649_rule

Vulnerability Number

V-218744

Group Title

SRG-APP-000141-WSR-000082

Rule Version

IIST-SI-000215

Severity

CAT II

CCI(s)

• CCI-000381 - The organization configures the information system to provide only essential capabilities.

Weight

10

Fix Recommendation

Open the IIS 10.0 Manager.

Click the site name under review.

Double-click "Handler Mappings".

Remove any script file extensions listed on the black list that are enabled.

Select "Apply" from the "Actions" pane.

Check Contents

For Handler Mappings, the ISSO must document and approve all allowable scripts the website allows (white list) and denies (black list). The white list and black list will be compared to the Handler Mappings in IIS 10.0. Handler Mappings at the site level take precedence over Handler Mappings at the server level.

Open the IIS 10.0 Manager.

Click the site name under review.

Double-click "Handler Mappings".

If any script file extensions from the black list are enabled, this is a finding.

Vulnerability Number

V-218744

Documentable

False

Rule Version

IIST-SI-000215

Severity Override Guidance

For Handler Mappings, the ISSO must document and approve all allowable scripts the website allows (white list) and denies (black list). The white list and black list will be compared to the Handler Mappings in IIS 10.0. Handler Mappings at the site level take precedence over Handler Mappings at the server level.

Open the IIS 10.0 Manager.

Click the site name under review.

Double-click "Handler Mappings".

If any script file extensions from the black list are enabled, this is a finding.

Check Content Reference

M

Target Key

4051

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