IMAP Service Cleartext Login Permitted

This script is Copyright (C) 2004-2017 George A. Theall


Synopsis :

The remote IMAP server allows Cleartext logins.

Description :

The remote host is running an IMAP daemon that allows cleartext logins
over unencrypted connections. An attacker can uncover user names and
passwords by sniffing traffic to the IMAP daemon if a less secure
authentication mechanism (eg, LOGIN command, AUTH=PLAIN, AUTH=LOGIN)
is used.

See also :

https://tools.ietf.org/html/rfc2222
https://tools.ietf.org/html/rfc2595

Solution :

Contact your vendor for a fix or encrypt traffic with SSL / TLS using
stunnel.

Risk factor :

Low / CVSS Base Score : 2.6
(CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N)

Family: Misc.

Nessus Plugin ID: 15856 (imap_unencrypted_cleartext_logins.nasl)

Bugtraq ID:

CVE ID:

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