Check: IIST-SV-000140
Microsoft IIS 10.0 Server STIG:
IIST-SV-000140
(in versions v2 r10 through v2 r7)
Title
Warning and error messages displayed to clients must be modified to minimize the identity of the IIS 10.0 web server, patches, loaded modules, and directory paths. (Cat II impact)
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
Open the IIS 10.0 Manager. Click the IIS 10.0 web server name. Double-click the "Error Pages" icon. Click any error message, and then click "Edit Feature Setting" from the "Actions" Pane. This will apply to all error messages. If the feature setting 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
Open the IIS 10.0 Manager. Click the IIS 10.0 web server name. Double-click the "Error Pages" icon. Click any error message, and then click "Edit Feature Setting" from the "Actions" Pane. This will apply to all error messages. Set Feature Setting to "Detailed errors for local requests and custom error pages for remote requests" or "Custom error pages".
Additional Identifiers
Rule ID: SV-218810r879655_rule
Vulnerability ID: V-218810
Group Title: SRG-APP-000266-WSR-000159
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-001312 |
The information system generates error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries. |
Controls
| Number | Title |
|---|---|
| SI-11 |
Error Handling |