Display "Not secure" verbose state for data: URLs

components/security_state/core/security_state.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/security_state/core/security_state.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 114 matching lines @@
   bool is_cryptographic_with_certificate =
       (url.SchemeIsCryptographic() && visible_security_state.certificate);
 
   // Set the security level to DANGEROUS for major certificate errors.
   if (is_cryptographic_with_certificate &&
       net::IsCertStatusError(visible_security_state.cert_status) &&
       !net::IsCertStatusMinorError(visible_security_state.cert_status)) {
     return DANGEROUS;
   }
 
+  // data: URLs don't define a secure context, and are a vector for spoofing.
+  // Display a "Not secure" badge for all data URLs, regardless of whether
+  // they show a password or credit card field.
+  if (url.SchemeIs(url::kDataScheme))
+    return SecurityLevel::HTTP_SHOW_WARNING;
+
   // Choose the appropriate security level for HTTP requests.
   if (!is_cryptographic_with_certificate) {
     if (!is_origin_secure_callback.Run(url) && url.IsStandard()) {
       return GetSecurityLevelForNonSecureFieldTrial(
           visible_security_state.displayed_password_field_on_http ||
           visible_security_state.displayed_credit_card_field_on_http);
     }
     return NONE;
   }
 
@@ skipping 166 matching lines @@
               other.displayed_content_with_cert_errors &&
           ran_content_with_cert_errors == other.ran_content_with_cert_errors &&
           pkp_bypassed == other.pkp_bypassed &&
           displayed_password_field_on_http ==
               other.displayed_password_field_on_http &&
           displayed_credit_card_field_on_http ==
               other.displayed_credit_card_field_on_http);
 }
 
 }  // namespace security_state