Please ignore the previous patch and consider this one.
There's a typo in the previous one.
diff -Nur puppet-2.7.18.orig/lib/puppet/ssl/certificate.rb puppet-2.7.18/lib/puppet/ssl/certificate.rb
--- puppet-2.7.18.orig/lib/puppet/ssl/certificate.rb 2012-07-09 23:08:16.000000000 +0100
+++ puppet-2.7.18/lib/puppet/ssl/certificate.rb 2013-04-16 02:12:59.369573970 +0100
@@ -15,7 +15,7 @@
# Convert a string into an instance.
def self.from_s(string)
instance = wrapped_class.new(string)
- name = instance.subject.to_s.sub(/\/CN=/i, '').downcase
+ name = instance.subject.to_s.sub(/.*\/CN=([^\/]*)($|\/.*)/i, '\1').downcase
result = new(name)
result.content = instance
result
