Moodle XSS Vulnerability (MSA-25-0029)

# SPDX-FileCopyrightText: 2025 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:moodle:moodle";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.127935");
  script_version("2025-07-23T05:44:58+0000");
  script_tag(name:"last_modification", value:"2025-07-23 05:44:58 +0000 (Wed, 23 Jul 2025)");
  script_tag(name:"creation_date", value:"2025-07-18 07:06:20 +0000 (Fri, 18 Jul 2025)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_cve_id("CVE-2025-49512");

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

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

  script_name("Moodle XSS Vulnerability (MSA-25-0029)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2025 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_moodle_cms_detect.nasl");
  script_mandatory_keys("moodle/detected");

  script_tag(name:"summary", value:"Moodle 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:"insight", value:"An extension was omitted from the MathJax configuration shipped
  with Moodle when the library was upgraded in LMS 5.0, resulting in an XSS risk.");

  script_tag(name:"affected", value:"Moodle version 5.0.");

  script_tag(name:"solution", value:"Update to version 5.0.1 or later.");

  script_xref(name:"URL", value:"https://moodle.org/mod/forum/discuss.php?d=468500");

  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_is_equal(version: version, test_version: "5.0")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "5.0.1", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);