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The web-site must not allow non-ASCII characters in URLs.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-26044 | WA000-WI6240 | SV-32695r4_rule | ECSC-1 | Medium |
| Description |
|---|
| By setting limits on web requests, it 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. |
| STIG | Date |
|---|---|
| IIS 7.0 WEB SITE STIG | 2015-08-27 |
Details
| Check Text ( C-32892r3_chk ) |
|---|
| For each site reviewed: 1. Open the IIS Manager. 2. Click on the site name. 3. Double-click the Request Filtering icon. 4. Click Edit Feature Settings in the Actions Pane. If the allow high-bit characters checkbox is checked, this is a finding. NOTE: If the site has operational reasons to set allow high-bit characters to checked, this vulnerability can be documented locally by the ISSM/ISSO. |
| Fix Text (F-29038r2_fix) |
|---|
| 1. Open the IIS Manager. 2. Click the site name under review. 3. Double-click the Request Filtering icon. 4. Click Edit Feature Settings in the Actions Pane. 5. Uncheck the allow high-bit characters checkbox. |