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← Back to Microsoft IIS 10.0 Site Security Technical Implementation Guide

V-218760

CAT II (Medium)

Warning and error messages displayed to clients must be modified to minimize the identity of the IIS 10.0 website, patches, loaded modules, and directory paths.

Rule ID

SV-218760r1022690_rule

STIG

Microsoft IIS 10.0 Site Security Technical Implementation Guide

Version

V2R15

CCIs

CCI-001312

Discussion

HTTP error pages contain information that could enable an attacker to gain access to an information system. Failure to prevent the sending of HTTP error pages with full information to remote requesters exposes internal configuration information to potential attackers.

Check Content

Note: If this server is hosting WSUS, this requirement is Not Applicable.

Follow the procedures below for each site hosted on the IIS 10.0 web server:

Open the IIS 10.0 Manager.

Click the site name under review.

Double-click the "Error Pages" icon.

Click each error message and click "Edit Feature" setting from the "Actions" pane.

If any error message is not set to "Detailed errors for local requests and custom error pages for remote requests" or "Custom error pages", this is a finding.

Fix Text

Follow the procedures below for each site hosted on the IIS 10.0 web server:

Open the IIS 10.0 Manager.

Click the site name under review.

Double-click the "Error Pages" icon.

Click each error message and click "Edit Feature" Setting from the "Actions" pane; set each error message to "Detailed errors for local requests and custom error pages for remote requests" or "Custom error pages".