Detections
Analytics

IIST-SI-000215 - Mappings to unused and vulnerable scripts on the IIS 10.0 website must be removed.

Information

IIS 10.0 will either allow or deny script execution based on file extension. The ability to control script execution is controlled through two features with IIS 10.0, Request Filtering and Handler Mappings.

For Handler Mappings, the ISSO must document and approve all allowable file extensions the website allows (whitelist) and denies (blacklist). The whitelist and blacklist will be compared to the Handler Mappings in IIS 10. Handler Mappings at the site level take precedence over Handler Mappings at the server level.

Solution

Open the IIS 10.0 Manager.

Click the site name under review.

Double-click 'Handler Mappings'.

Remove any script file extensions listed on the black list that are enabled.

Select 'Apply' from the 'Actions' pane.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_IIS_10-0_Y26M07_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-7a., CAT|II, CCI|CCI-000381, Rule-ID|SV-218744r1135545_rule, STIG-ID|IIST-SI-000215, STIG-Legacy|SV-109313, STIG-Legacy|V-100209, Vuln-ID|V-218744

Plugin: Windows

Control ID: 95dc616de851c0d191d2abb50959cbf7e7216eb7f44081ccb7e309f115648ea7