Apache Struts 2.x < 2.3.16.1 Multiple Vulnerabilities (S2-020) (Linux)

# Copyright (C) 2019 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of their respective author(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:apache:struts";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.108626");
  script_version("2019-08-29T07:36:00+0000");
  script_bugtraq_id(65400, 65999);
  script_cve_id("CVE-2014-0050", "CVE-2014-0094");
  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:"last_modification", value:"2019-08-29 07:36:00 +0000 (Thu, 29 Aug 2019)");
  script_tag(name:"creation_date", value:"2019-08-28 07:41:10 +0000 (Wed, 28 Aug 2019)");
  script_name("Apache Struts 2.x < 2.3.16.1 Multiple Vulnerabilities (S2-020) (Linux)");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_dependencies("gb_apache_struts2_detection.nasl", "os_detection.nasl");
  script_mandatory_keys("ApacheStruts/installed", "Host/runs_unixoide");

  script_xref(name:"URL", value:"https://cwiki.apache.org/confluence/display/WW/S2-020");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/65400");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/65999");

  script_tag(name:"summary", value:"This host is running Apache Struts and is
  prone to multiple vulnerabilities.");

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

  script_tag(name:"solution", value:"Upgrade to Struts 2.3.16.2 or later.");

  script_tag(name:"insight", value:"The default upload mechanism in Apache Struts 2 is based on Commons
  FileUpload version 1.3 which is vulnerable and allows DoS attacks. Additional ParametersInterceptor
  allows access to 'class' parameter which is directly mapped to getClass() method and allows ClassLoader
  manipulation.");

  script_tag(name:"affected", value:"Struts 2.0.0 - Struts 2.3.16.1.");

  script_tag(name:"impact", value:"A remote attacker can execute arbitrary Java code via crafted
  parameters or cause a Denial of Service.");

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

  exit(0);
}

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

if(!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);

vers = infos["version"];
if(vers !~ "^2\.[0-3]\.")
  exit(99);

if(version_in_range(version:vers, test_version:"2.0.0", test_version2:"2.3.16.1")) {
  report = report_fixed_ver(installed_version:vers, fixed_version:"2.3.16.2", install_path:infos["location"]);
  security_message(data:report, port:port);
  exit(0);
}

exit(99);