BUG22873551: Fix cleartext authentication issue

amitab · amitab · commit c0dc8ad12874 · 2016-07-15T14:16:33.000+05:30
Patch provided by contributor.

Unit Tests cannot be added for this patch because it includes setting
up an account to authenticate via PAM.
diff --git a/lib/mysql/connector/protocol.py b/lib/mysql/connector/protocol.py
@@ -718,7 +718,7 @@ def parse_auth_switch_request(self, packet):
                 "Failed parsing AuthSwitchRequest packet")
 
         (packet, plugin_name) = utils.read_string(packet[5:], end=b'\x00')
-        if packet[-1] == 0:
+        if packet and packet[-1] == 0:
             packet = packet[:-1]
 
         return plugin_name.decode('utf8'), packet
