Symfony 2.8.x < 2.8.6, 3.0.x < 3.0.6 Authentication Bypass Vulnerability

# Copyright (C) 2019 Greenbone Networks GmbH, https://www.greenbone.net
#
# 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.

if( description )
{
  script_oid("1.3.6.1.4.1.25623.1.0.112584");
  script_version("2022-04-13T07:21:45+0000");
  script_tag(name:"last_modification", value:"2022-04-13 07:21:45 +0000 (Wed, 13 Apr 2022)");
  script_tag(name:"creation_date", value:"2019-05-20 12:00:11 +0200 (Mon, 20 May 2019)");
  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_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-08-06 01:29:00 +0000 (Mon, 06 Aug 2018)");

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

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

  script_cve_id("CVE-2016-2403");

  script_name("Symfony 2.8.x < 2.8.6, 3.0.x < 3.0.6 Authentication Bypass Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_symfony_consolidation.nasl");
  script_mandatory_keys("symfony/detected");

  script_tag(name:"summary", value:"This host runs Symfony and is prone to an authentication bypass vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The vulnerability allows remote attackers to bypass authentication by logging
  in with an empty password and valid username, which triggers an unauthenticated bind.");

  script_tag(name:"impact", value:"Successful exploitation would allow an attacker to bypass authentication.");

  script_tag(name:"affected", value:"Symfony versions 2.8.0 to 2.8.5 and 3.0.0 to 3.0.5.");

  script_tag(name:"solution", value:"The issue has been fixed in Symfony 2.8.6 and 3.0.6.");

  script_xref(name:"URL", value:"https://symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/96137");

  exit(0);
}

CPE = "cpe:/a:sensiolabs:symfony";

include( "host_details.inc" );
include( "version_func.inc" );

if( isnull( port = get_app_port( cpe: CPE ) ) ) exit( 0 );
if( ! infos = get_app_version_and_location( cpe: CPE, port: port, exit_no_version: TRUE) ) exit( 0 );
version = infos["version"];
location = infos["location"];

if( version_in_range( version: version, test_version: "2.8.0", test_version2: "2.8.5" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "2.8.6", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

if( version_in_range( version: version, test_version: "3.0.0", test_version2: "3.0.5" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "3.0.6", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

exit( 99 );