OpenControls Logo

STIG Viewer

STIGViewer Support

Non-ASCII characters in URLs must be prohibited by any IIS 10.0 website.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-218756IIST-SI-000228SV-218756r1210388_ruleCCI-001094medium
Description
Setting limits on web requests ensures availability of web services and mitigates the risk of buffer overflow type attacks. The allow high-bit characters Request Filter enables rejection of requests containing non-ASCII characters.
STIGDate
Microsoft IIS 10.0 Site Security Technical Implementation Guide2026-05-23

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CAP-02Resource Priority
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (16) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-3Access Enforcement
1.00
AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AC-6(8)Privilege Levels for Code Execution
1.00
CM-11(2)Software Installation with Privileged Status
1.00
CM-5(1)Automated Access Enforcement and Audit Records
1.00
CM-5(6)Limit Library Privileges
1.00
CM-6Configuration Settings
1.00
CM-7Least Functionality
1.00
CM-7(2)Prevent Program Execution
1.00
SC-18(1)Identify Unacceptable Code and Take Corrective Actions
1.00

+6 more (top 10 by confidence shown)

CCI1 mapping
CCI-001094
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 4 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.IR-04
0.50

Details

Check Text (C-218756r1210388_chk)

Note: If either of the following is true, this requirement is Not Applicable: - The server being reviewed is hosting SharePoint. - This IIS 10.0 installation is supporting Microsoft Exchange and not otherwise hosting any content. 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. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. If the "Allow high-bit characters" check box is checked, this is a finding.

Fix Text (F-20227r311167_fix)

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 "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. Uncheck the "Allow high-bit characters" check box.