Apache Tika Server XML Entity Expansion Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2018 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

CPE = "cpe:/a:apache:tika";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.814054");
  script_version("2024-03-04T14:37:58+0000");
  script_cve_id("CVE-2018-11761", "CVE-2018-11796");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"2024-03-04 14:37:58 +0000 (Mon, 04 Mar 2024)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-11-12 20:15:00 +0000 (Tue, 12 Nov 2019)");
  script_tag(name:"creation_date", value:"2018-09-27 15:38:59 +0530 (Thu, 27 Sep 2018)");
  script_name("Apache Tika Server XML Entity Expansion Denial of Service Vulnerability");

  script_tag(name:"summary", value:"Apache Tika Server is prone to a denial of service (DoS) 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 because apache tika's
  XML parsers were not configured to limit entity expansion.

  NOTE: In Apache Tika 1.19 (CVE-2018-11761), added an entity expansion
  limit for XML parsing. However, Tika reuses SAXParsers and calls reset()
  after each parse, which, for Xerces2 parsers, as per the documentation,
  removes the user-specified SecurityManager and thus removes entity
  expansion limits after the first parse. Apache Tika 1.19 is therefore
  still vulnerable to entity expansions.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  attackers to cause a denial of service condition.");

  script_tag(name:"affected", value:"Apache Tika Server from versions 0.1 to 1.19");

  script_tag(name:"solution", value:"Upgrade to Apache Tika Server 1.19.1 or later. Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"remote_banner");
  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/5553e10bba5604117967466618f219c0cae710075819c70cfb3fb421@%3Cdev.tika.apache.org%3E");
  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/5553e10bba5604117967466618f219c0cae710075819c70cfb3fb421@%3Cdev.tika.apache.org%3E");
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_dependencies("gb_apache_tika_server_detect.nasl");
  script_mandatory_keys("Apache/Tika/Server/Installed");

  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);

version = infos["version"];
path = infos["location"];

if(version_in_range(version:version, test_version:"0.1", test_version2:"1.19")) {
  report = report_fixed_ver(installed_version:version, fixed_version:"1.19.1", install_path:path);
  security_message(data:report, port:port);
  exit(0);
}

exit(99);