Nextcloud Server 'Autocomplete field' Stored XSS Vulnerability (NC-SA-2018-008)

# SPDX-FileCopyrightText: 2018 Greenbone AG
# 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

CPE = "cpe:/a:nextcloud:nextcloud_server";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813916");
  script_version("2023-05-15T09:08:55+0000");
  script_cve_id("CVE-2018-3780");
  script_tag(name:"cvss_base", value:"3.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2023-05-15 09:08:55 +0000 (Mon, 15 May 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-09 23:40:00 +0000 (Wed, 09 Oct 2019)");
  script_tag(name:"creation_date", value:"2018-08-20 17:29:50 +0530 (Mon, 20 Aug 2018)");
  script_name("Nextcloud Server 'Autocomplete field' Stored XSS Vulnerability (NC-SA-2018-008)");

  script_tag(name:"summary", value:"Nextcloud Server is prone to a stored 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 flaw exists due to a missing sanitization of search results
  for an autocomplete field.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker to craft a
  specially crafted request that would execute arbitrary script code in a user's browser session
  within the trust relationship between their browser and the server.");

  script_tag(name:"affected", value:"Nextcloud Server before 13.0.5.");

  script_tag(name:"solution", value:"Update to version 13.0.5 or later.");

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

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

  script_xref(name:"URL", value:"https://nextcloud.com/security/advisory/?id=NC-SA-2018-008");

  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_dependencies("gb_nextcloud_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("nextcloud/installed", "Host/runs_unixoide");
  exit(0);
}

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

vers = infos["version"];
path = infos["location"];

if(version_is_less(version:vers, test_version:"13.0.5")) {
  report = report_fixed_ver(installed_version:vers, fixed_version:"13.0.5", install_path:path);
  security_message(port:port, data:report);
  exit(0);
}

exit(99);