Check self-signed certificate names and signatures

net/cert/x509_certificate_ios.cc

 // Copyright (c) 2016 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 "net/cert/x509_certificate.h"
 
 #include <CommonCrypto/CommonDigest.h>
 #include <Security/Security.h>
 
 #include <openssl/x509.h>
@@ skipping 448 matching lines @@
 }
 
 // static
 bool X509Certificate::IsSelfSigned(OSCertHandle os_cert) {
   ScopedX509 cert = OSCertHandleToOpenSSL(os_cert);
   if (!cert)
     return false;
   crypto::ScopedEVP_PKEY scoped_key(X509_get_pubkey(cert.get()));
   if (!scoped_key)
     return false;
-
-  // NOTE: X509_verify() returns 1 in case of success, 0 or -1 on error.
-  return X509_verify(cert.get(), scoped_key.get()) == 1;
+  if (!X509_verify(cert.get(), scoped_key.get()))
+    return false;
+  return X509_check_issued(cert.get(), cert.get()) == X509_V_OK;
 }
 
 }  // namespace net