The production web-site must be configured to prevent detailed HTTP error pages from being sent to remote clients.

SV-32682r2_rule The production web-site must be configured to prevent detailed HTTP error pages from being sent to remote clients.

Vulnerability 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

1. Open the IIS Manager. 2. Click the site name under review. 3. Double-click the Error Pages icon. 4. 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”, this is a finding.

Fix text

1. Open the IIS Manager. 2. Click the site name under review. 3. Double-click the Error Pages icon. 4. 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”.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.