Add a NEWS entry for b9b521efeba3.
diff --git a/Misc/NEWS b/Misc/NEWS
index 4b576a1..2b07ae3 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 
 - Fix tkinter regression introduced by the security fix in issue #16248.
 
+- Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of
+  service using certificates with many wildcards (CVE-2013-2099).
+
 
 What's New in Python 3.2.5?
 ===========================