Icinga < 2.11.10, 2.12.0 < 2.12.5 Password Disclosure Vulnerability

# Copyright (C) 2021 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:icinga:icinga2";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.146316");
  script_version("2021-08-17T12:00:57+0000");
  script_tag(name:"last_modification", value:"2021-08-17 12:00:57 +0000 (Tue, 17 Aug 2021)");
  script_tag(name:"creation_date", value:"2021-07-19 02:27:51 +0000 (Mon, 19 Jul 2021)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-07-27 18:36:00 +0000 (Tue, 27 Jul 2021)");

  script_cve_id("CVE-2021-32743");

  script_tag(name:"qod_type", value:"remote_banner_unreliable");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Icinga < 2.11.10, 2.12.0 < 2.12.5 Password Disclosure Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_icinga2_detect.nasl");
  script_mandatory_keys("icinga2/detected");

  script_tag(name:"summary", value:"Icinga 2 is prone to a password disclosure vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"Some of the Icinga 2 features that require credentials for
  external services exposed those through the API. The following features inadvertently exposed
  these credentials to authenticated API users with read permissions for the corresponding object
  types:

  - IdoMysqlConnection and IdoPgsqlConnection (every released version): password of the user used
  to connect to the database

  - IcingaDB (added in 2.12.0): password used to connect to the Redis server

  - ElasticsearchWriter (added in 2.8.0): password used to connect to the Elasticsearch server");

  script_tag(name:"impact", value:"An attacker who obtained these credentials can impersonate
  Icinga to these services and add, modify and delete information there.
  If credentials with more permissions are in use, this increases the impact accordingly.");

  script_tag(name:"affected", value:"Icinga2 prior to version 2.11.10 and 2.12.0 through 2.12.4.");

  script_tag(name:"solution", value:"Update to version 2.11.10, 2.12.5 or later.");

  script_xref(name:"URL", value:"https://github.com/Icinga/icinga2/security/advisories/GHSA-wrpw-pmr8-qgj7");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!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_in_range(version: version, test_version: "2.0.0", test_version2: "2.11.9")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.11.10", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "2.12.0", test_version2: "2.12.4")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.12.5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);