NUUO NVR < 3.9.1 Backdoor Activated - Active Check

# 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-only

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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.141487");
  script_version("2025-02-27T08:17:42+0000");
  script_tag(name:"last_modification", value:"2025-02-27 08:17:42 +0000 (Thu, 27 Feb 2025)");
  script_tag(name:"creation_date", value:"2018-09-18 10:28:22 +0700 (Tue, 18 Sep 2018)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");

  script_cve_id("CVE-2018-1150");

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

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

  script_name("NUUO NVR < 3.9.1 Backdoor Activated - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_nuuo_devices_http_detect.nasl");
  script_mandatory_keys("nuuo/device/http/detected");
  script_require_ports("Services/www", 80);

  script_tag(name:"summary", value:"The Backdoor in NUUO NVR is active.");

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

  script_tag(name:"insight", value:"If the file '/tmp/moses' is present on the device
  unauthenticated remote attacker can list all of the non-admin users and change their passwords");

  script_tag(name:"solution", value:"Update to version 3.9.1 (03.09.0001.0000) or later. Remove the
  file '/tmp/moses' from the system. Recheck if malicious users have been added and change all
  passwords.");

  script_xref(name:"URL", value:"https://www.nuuo.com/NewsDetail.php?id=0425");
  script_xref(name:"URL", value:"https://www.tenable.com/security/research/tra-2018-25");
  script_xref(name:"URL", value:"https://www.tenable.com/blog/tenable-research-advisory-peekaboo-critical-vulnerability-in-nuuo-network-video-recorder");

  exit(0);
}

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

if (!port = get_app_port(cpe: CPE))
  exit(0);

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

url = "/users_xml.php";

if (http_vuln_check(port: port, url: url, pattern: "<AccountInfo>", check_header: TRUE)) {
  report = 'The backdoor seems to be activated since an unauthenticated request to ' +
           http_report_vuln_url(port: port, url: url, url_only: TRUE) +
           ' returns information about all non-admin users.';
  security_message(port: port, data: report);
  exit(0);
}

exit(99);