Shibboleth XMLTooling-C Library Security Bypass Vulnerability

2018-03-22T00:00:00
ID OPENVAS:1361412562310813051
Type openvas
Reporter Copyright (C) 2018 Greenbone Networks GmbH
Modified 2019-05-17T00:00:00

Description

The host is installed with Shibboleth Service Provider and is prone to security bypass vulnerability.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
#
# Shibboleth XMLTooling-C Library Security Bypass Vulnerability
#
# Authors:
# Rinu Kuriakose <krinu@secpod.com>
#
# Copyright:
# Copyright (C) 2018 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# 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:internet2:shibboleth-sp";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813051");
  script_version("2019-05-17T10:45:27+0000");
  script_cve_id("CVE-2018-0489");
  script_bugtraq_id(103172);
  script_tag(name:"cvss_base", value:"6.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_tag(name:"last_modification", value:"2019-05-17 10:45:27 +0000 (Fri, 17 May 2019)");
  script_tag(name:"creation_date", value:"2018-03-22 14:44:12 +0530 (Thu, 22 Mar 2018)");
  script_tag(name:"qod_type", value:"registry");
  script_name("Shibboleth XMLTooling-C Library Security Bypass Vulnerability");

  script_tag(name:"summary", value:"The host is installed with Shibboleth
  Service Provider and is prone to security bypass vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists due to limitations in older
  versions of the XML parser that make it impossible to fully disable Document Type
  Definition (DTD) processing. Through addition/manipulation of a DTD, it's possible
  to make changes to an XML document that do not break a digital signature but are
  mishandled by the SP and its libraries processing.");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker
  to bypass the authentication mechanism and perform unauthorized actions.
  This may lead to further attacks.");

  script_tag(name:"affected", value:"Shibboleth XMLTooling-C before 1.6.4, as used
  in Shibboleth Service Provider before 2.6.1.4.");

  script_tag(name:"solution", value:"Upgrade to Shibboleth Service Provider release
  (V2.6.1.4) or upgrade XMLTooling-C library to version 1.6.4.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_xref(name:"URL", value:"https://shibboleth.net/community/advisories/secadv_20180112.txt");
  script_xref(name:"URL", value:"https://www.securitytracker.com/id/1040435");

  script_copyright("Copyright (C) 2018 Greenbone Networks GmbH");
  script_category(ACT_GATHER_INFO);
  script_family("General");
  script_dependencies("gb_shibboleth_sp_detect_win.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("Shibboleth/SP/Win/Ver");
  exit(0);
}


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

if(!infos = get_app_version_and_location( cpe:CPE, exit_no_version:TRUE )) exit(0);
shVer = infos['version'];
location = infos['location'];

if(version_is_less(version:shVer, test_version:"2.6.1.4"))
{
  path = registry_get_sz(key:"SOFTWARE\Microsoft\Windows\CurrentVersion",
                         item:"ProgramFilesDir");
  if(path)
  {
    path = path + "\Shibboleth\SP\lib";

    dllVer = fetch_file_version(sysPath:path, file_name:"xmltooling1_6.dll");

    if(dllVer && version_is_less(version:dllVer, test_version:"1.6.4.0"))
    {
      report = report_fixed_ver(installed_version:shVer, fixed_version:"Upgrade to Shibboleth SP 2.6.1.4 or upgrade XMLTooling-C library to version 1.6.4", install_path:location);
      security_message(data:report);
      exit(0);
    }
  }
}
exit(0);