QNAP QTS, QuTS hero, QuTScloud OS Command Injection Vulnerability (CVE-2023-47218, QSA-23-57) - Active Check

# SPDX-FileCopyrightText: 2024 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_PREFIX = "cpe:/o:qnap:q";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.151741");
  script_version("2024-02-15T14:37:33+0000");
  script_tag(name:"last_modification", value:"2024-02-15 14:37:33 +0000 (Thu, 15 Feb 2024)");
  script_tag(name:"creation_date", value:"2024-02-15 05:45:46 +0000 (Thu, 15 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:H/Au:N/C:P/I:P/A:P");

  script_cve_id("CVE-2023-47218");

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

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

  script_name("QNAP QTS, QuTS hero, QuTScloud OS Command Injection Vulnerability (CVE-2023-47218, QSA-23-57) - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2024 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_qnap_nas_http_detect.nasl");
  script_mandatory_keys("qnap/nas/http/detected");
  script_require_ports("Services/www", 8080);

  script_tag(name:"summary", value:"QNAP QTS, QuTS hero and QuTScloud are prone to an OS command
  injection vulnerability.");

  script_tag(name:"vuldetect", value:"Sends a crafted HTTP GET request and checks the response.");

  script_tag(name:"insight", value:"An OS command injection vulnerability has been reported to
  affect several QNAP operating system versions. If exploited, the vulnerability could allow users
  to execute commands via a network.");

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");

  script_xref(name:"URL", value:"https://www.qnap.com/en/security-advisory/qsa-23-57");

  exit(0);
}

include("dump.inc");
include("host_details.inc");
include("http_func.inc");
include("http_keepalive.inc");
include("misc_func.inc");

if (!infos = get_app_port_from_cpe_prefix(cpe: CPE_PREFIX, service: "www", first_cpe_only: TRUE))
  exit(0);

port = infos["port"];
cpe = infos["cpe"];

if (!get_app_location(cpe: cpe, port: port, nofork: TRUE))
  exit(0);

vt_strings = get_vt_strings();
payload = vt_strings["default"];

url = "/cgi-bin/quick/quick.cgi?func=" + payload;

req = http_get(port: port, item: url);
res = http_keepalive_send_recv(port: port, data: req);

res = bin2string(ddata: res, noprint_replacement: "");

if (res =~ "^HTTP/1\.[01] 200" && "<firmware_info>" >< res) {
  report = http_report_vuln_url(port: port, url: url);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);