From 24d9c455999c4d0786482afe95b6527af6b87d04 Mon Sep 17 00:00:00 2001
From: Chris Manson <chris@manson.ie>
Date: Wed, 26 Aug 2015 13:02:55 +0100
Subject: [PATCH] Adding an extra check for cert.subject before assuming it is
 there.

---
 lib/tls.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/tls.js b/lib/tls.js
index 0d85a948dcc511..988864ed339cf6 100644
--- a/lib/tls.js
+++ b/lib/tls.js
@@ -177,10 +177,12 @@ exports.checkServerIdentity = function checkServerIdentity(host, cert) {
         reason = util.format('Host: %s is not in the cert\'s altnames: %s',
                              host,
                              cert.subjectaltname);
-      } else {
+      } else if (cert.subject) {
         reason = util.format('Host: %s is not cert\'s CN: %s',
                              host,
                              cert.subject.CN);
+      } else {
+        reason = util.format('Host: %s cert\'s subject is missing', host);
       }
     }
   } else {