Collabora CODE / Collabora Online <= 4.2.2 XSS 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:collabora:online";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.117816");
  script_version("2021-12-09T14:03:23+0000");
  script_cve_id("CVE-2020-12432");
  script_tag(name:"last_modification", value:"2021-12-09 14:03:23 +0000 (Thu, 09 Dec 2021)");
  script_tag(name:"creation_date", value:"2021-12-09 10:14:13 +0000 (Thu, 09 Dec 2021)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-07-24 18:39:00 +0000 (Fri, 24 Jul 2020)");
  script_name("Collabora CODE / Collabora Online <= 4.2.2 XSS Vulnerability");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_collabora_libreoffice_online_http_detect.nasl");
  script_mandatory_keys("collabora_libreoffice/online/detected");

  script_xref(name:"URL", value:"https://github.com/d7x/CVE-2020-12432");

  script_tag(name:"summary", value:"Collabora CODE (Collabora Online Development Edition) and
  Collabora Online are prone to a cross-site scripting (XSS) vulnerability.");

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

  script_tag(name:"insight", value:"The wopi API interface developed by vereign and integrated into
  Collabora CODE's main package is prone to an xss attack and insecure file access permissions.
  After uploading a document with arbitrary html file, it is possible to steal the localstorage data
  by providing a specifically crafted link with an XSS redirect to a victim.");

  script_tag(name:"affected", value:"Collabora CODE / Collabora Online versions through 4.2.2.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year
  since the disclosure of this vulnerability. Likely none will be provided anymore. General solution
  options are to upgrade to a newer release, disable respective features, remove the product or
  replace the product by another one.");

  script_tag(name:"qod_type", value:"remote_banner");
  script_tag(name:"solution_type", value:"WillNotFix");

  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_less_equal( version:version, test_version:"4.2.2" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"None", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );