Sendmail < 8.14.4 SSL Certificate NULL Character Spoofing

This script is Copyright (C) 2010-2014 Tenable Network Security, Inc.


Synopsis :

The remote mail server is susceptible to a man-in-the-middle attack.

Description :

The remote mail server is running a version of Sendmail earlier than
8.14.4. Such versions are reportedly affected by a flaw that may allow
an attacker to spoof SSL certificates by using a NULL character in
certain certificate fields.

A remote attacker may exploit this to perform a man-in-the-middle
attack.

See also :

http://www.sendmail.org/releases/8.14.4

Solution :

Upgrade to Sendmail 8.14.4 or later.

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N)
CVSS Temporal Score : 5.0
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: SMTP problems

Nessus Plugin ID: 43637 ()

Bugtraq ID: 37543

CVE ID: CVE-2009-4565