CKEditor 4.x < 4.21 XSS Vulnerability - Linux

# SPDX-FileCopyrightText: 2023 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-only

CPE = "cpe:/a:ckeditor:ckeditor";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.126036");
  script_version("2023-10-12T05:05:32+0000");
  script_tag(name:"last_modification", value:"2023-10-12 05:05:32 +0000 (Thu, 12 Oct 2023)");
  script_tag(name:"creation_date", value:"2023-03-28 17:00:19 +0000 (Tue, 28 Mar 2023)");
  script_tag(name:"cvss_base", value:"6.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/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:"2023-03-28 18:52:00 +0000 (Tue, 28 Mar 2023)");

  script_cve_id("CVE-2023-28439");

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

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

  script_name("CKEditor 4.x < 4.21 XSS Vulnerability - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("sw_ckeditor_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("ckeditor/detected", "Host/runs_unixoide");

  script_tag(name:"summary", value:"CKEditor 4 is 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:"impact", value:"A cross-site scripting has been discovered in Iframe Dialog and
  Media Embed packages.");

  script_tag(name:"affected", value:"CKEditor version 4.x prior to 4.21.");

  script_tag(name:"solution", value:"Update to version 4.21 or later.");

  script_xref(name:"URL", value:"https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-vh5c-xwqv-cv9g");

  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);

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

if (version_in_range_exclusive(version: version, test_version_lo: "4.0", test_version_up: "4.21")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.21", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);