Title

A private web sites authentication mechanism must use client certificates. (Cat II impact)

Discussion

A DoD private web site must utilize PKI as an authentication mechanism for web users. Information systems residing behind web servers requiring authorization based on individual identity shall use the identity provided by certificate-based authentication to support access control decisions. Not using client certificates allows an attacker unauthenticated access to private web sites.

Check Content

1. Open the IIS Manager > Right click on the website being reviewed > Select Properties > Select the Directory Security tab. 2. Under the Secure communications area select the Edit button. 3. Ensure Require secure channel (SSL) and Require client certificates are checked. If Require secure channel (SSL) and Require client certificates are not checked, this is a finding.

Fix Text

1. Open the IIS Manager > Right click on the website being reviewed > Select Properties > Select the Directory Security tab. 2. Under the Secure communications area select the Edit button. 3. Select Require secure channel (SSL) and Require client certificates > Press OK.

Additional Identifiers

Rule ID: SV-30046r1_rule

Vulnerability ID: V-6531

Group Title:

Expert Comments

CCIs tied to check.

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