Title

The IIS 10.0 web server must perform RFC 5280-compliant certification path validation. (Cat II impact)

Discussion

This check verifies the server certificate is actually a DoD-issued certificate used by the organization being reviewed. This is used to verify the authenticity of the website to the user. If the certificate is not issued by the DoD or if the certificate has expired, then there is no assurance the use of the certificate is valid, and therefore; the entire purpose of using a certificate is compromised.

Check Content

Open the IIS 10.0 Manager. Click the IIS 10.0 web server name. Double-click the "Server Certificate" icon. Double-click each certificate and verify the certificate path is to a DoD root CA. If the “Issued By” field of the PKI certificate being used by the IIS 10.0 server/site does not indicate the issuing Certificate Authority (CA) is part of the DoD PKI or an approved ECA, this is a finding.

Fix Text

Open the IIS 10.0 Manager. Click the IIS 10.0 web server name. Double-click the "Server Certificate" icon. Import a valid DoD certificate and remove any non-DoD certificates.

Additional Identifiers

Rule ID: SV-218800r879612_rule

Vulnerability ID: V-218800

Group Title: SRG-APP-000175-WSR-000095

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.