Microsoft Windows SMTP Service NTLM Null Session Authorization Bypass (uncredentialed check)

This script is Copyright (C) 2003-2013 Tenable Network Security, Inc.


Synopsis :

The remote SMTP server is affected by an authorization bypass
vulnerability.

Description :

It is possible to authenticate to the remote SMTP service by logging
in with a NULL session.

An attacker may use this flaw to use your SMTP server as a spam relay.

See also :

http://technet.microsoft.com/en-us/security/bulletin/ms02-011

Solution :

Microsoft has released patches for Windows NT and 2000 as well as
Exchange Server 5.5.

Risk factor :

Medium / CVSS Base Score : 6.4
(CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P)
CVSS Temporal Score : 4.7
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: SMTP problems

Nessus Plugin ID: 11308 ()

Bugtraq ID: 4205

CVE ID: CVE-2002-0054