Apache Tomcat XSS Vulnerability - May19 (Linux)

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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.142479");
  script_version("2019-06-03T03:11:58+0000");
  script_tag(name:"last_modification", value:"2019-06-03 03:11:58 +0000 (Mon, 03 Jun 2019)");
  script_tag(name:"creation_date", value:"2019-06-03 03:05:45 +0000 (Mon, 03 Jun 2019)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");

  script_cve_id("CVE-2019-0221");

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

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

  script_name("Apache Tomcat XSS Vulnerability - May19 (Linux)");

  script_category(ACT_GATHER_INFO);

  script_copyright("This script is Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_apache_tomcat_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("apache/tomcat/detected", "Host/runs_unixoide");

  script_tag(name:"summary", value:"Apache Tomcat is prone to a cross-site scripting vulnerability.");

  script_tag(name:"insight", value:"The SSI printenv command in Apache Tomcat echoes user provided data without
  escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for
  debugging and is unlikely to be present in a production website.");

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

  script_tag(name:"affected", value:"Apache Tomcat versions 7.0.0 to 7.0.93, 8.5.0 to 8.5.39 and 9.0.0.M1 to
  9.0.17.");

  script_tag(name:"solution", value:"Update to version 7.0.94, 8.5.40, 9.0.18 or later.");

  script_xref(name:"URL", value:"https://seclists.org/fulldisclosure/2019/May/50");
  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/6e6e9eacf7b28fd63d249711e9d3ccd4e0a83f556e324aee37be5a8c@%3Cannounce.tomcat.apache.org%3E");

  exit(0);
}

include("host_details.inc");
include("revisions-lib.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'];
path = infos['location'];

if (version_in_range(version: version, test_version: "7.0.0", test_version2: "7.0.93")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "7.0.94", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "8.5.0", test_version2: "8.5.39")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "8.5.40", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

if ((revcomp(a: version, b: "9.0.0.M1") >= 0) && (revcomp(a: version, b: "9.0.17") <= 0)) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.0.18", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);