A private web-sites authentication mechanism must use client certificates.

Part of WG140

SV-32380r4_rule A private web-sites authentication mechanism must use client certificates.

Vulnerability 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. 2. Click the site name under review. 3. Double click the SSL Settings icon. 4. Ensure Clients Certificate Required is checked. If not, this is a finding. NOTE: If the site has operational reasons to set Clients Certificate Required to unchecked, this vulnerability can be documented locally by the ISSM/ISSO.

Fix text

1. Open the IIS Manager. 2. Click the site name under review. 3. Double click the SSL Settings icon. 4. Click Clients Certificate Required button.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.