Unspecified file extensions on a production IIS 10.0 web server must be removed.
An XCCDF Rule
Description
<VulnDiscussion>By allowing unspecified file extensions to execute, the web servers attack surface is significantly increased. This increased risk can be reduced by only allowing specific ISAPI extensions or CGI extensions to run on the web server.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-218824r961863_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Open the IIS 10.0 Manager.
Click the IIS 10.0 web server name.
Double-click the "ISAPI and CGI restrictions" icon.