NodeBB < 3.6.7 Broken Access Control Vulnerability

# 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:nodebb:nodebb";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.171137");
  script_version("2025-01-31T15:39:24+0000");
  script_tag(name:"last_modification", value:"2025-01-31 15:39:24 +0000 (Fri, 31 Jan 2025)");
  script_tag(name:"creation_date", value:"2025-01-31 08:03:16 +0000 (Fri, 31 Jan 2025)");
  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_cve_id("CVE-2024-29316");

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

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

  script_name("NodeBB < 3.6.7 Broken Access Control Vulnerability");

  script_category(ACT_GATHER_INFO);

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

  script_tag(name:"summary", value:"NodeBB is prone to a broken access control vulnerability.");

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

  script_tag(name:"insight", value:"Low-privileged attackers can access the restricted tabs for the
  Admin group via 'isadmin':true.");

  # nb: Currently there are some inconsistencies:
  # - The blog post mentions 3.6.7 as affected and fixed "in the same version"
  # - CVE description says 3.6.7 is vulnerable
  # - The nodebb.org page says that the fix is included in 3.6.7 (search for "Vibhor Sharma" there)
  #
  # For now we're trusting the vendor that this has been fixed in 3.6.7.
  script_tag(name:"affected", value:"NodeBB prior to version 3.6.7.");

  script_tag(name:"solution", value:"Update to version 3.6.7 or later.");

  script_xref(name:"URL", value:"https://medium.com/%40krityamkarma858041/broken-access-control-nodebb-v3-6-7-eebc59c24deb");
  script_xref(name:"URL", value:"https://nodebb.org/bounty/");

  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_less(version: version, test_version: "3.6.7")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "3.6.7", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);