CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
AI Score
Confidence
Low
EPSS
Percentile
68.2%
Dovecot is prone to a man-in-the-middle vulnerability.
# Copyright (C) 2019 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
CPE = "cpe:/a:dovecot:dovecot";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.114170");
script_version("2020-12-08T08:52:45+0000");
script_tag(name:"last_modification", value:"2020-12-08 08:52:45 +0000 (Tue, 08 Dec 2020)");
script_tag(name:"creation_date", value:"2019-12-30 12:31:27 +0100 (Mon, 30 Dec 2019)");
script_tag(name:"cvss_base", value:"5.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");
script_cve_id("CVE-2011-4318");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Dovecot 2.0.x < 2.0.16 Man In The Middle Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
script_family("General");
script_dependencies("gb_dovecot_consolidation.nasl");
script_mandatory_keys("dovecot/detected");
script_tag(name:"summary", value:"Dovecot is prone to a man-in-the-middle vulnerability.");
script_tag(name:"insight", value:"When SSL or StartTLS is enabled and a hostname is used to define
the proxy destination, Dovecot does not verify that the server hostname matches a domain name in
the subject's Common Name(CN) of the X.509 certificate, which allows man-in-the-middle attackers
to spoof SSL servers via a valid certificate for a different hostname.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"affected", value:"Dovecot versions 2.0.x before 2.0.16.");
script_tag(name:"solution", value:"Update to version 2.0.16 or later.");
script_xref(name:"URL", value:"https://www.dovecot.org/list/dovecot-news/2011-November/000200.html");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (isnull(port = get_app_port(cpe: CPE)))
exit(0);
if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE))
exit(0);
version = infos["version"];
location = infos["location"];
if (version_is_greater_equal(version: version, test_version: "2.0.0") &&
version_is_less(version: version, test_version: "2.0.16")) {
report = report_fixed_ver(installed_version: version, fixed_version: "2.0.16", install_path: location);
security_message(port: port, data: report);
exit(0);
}
exit(99);