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openvasCopyright (C) 2020 Greenbone Networks GmbHOPENVAS:1361412562310143964
HistoryMay 25, 2020 - 12:00 a.m.

Apache Tomcat RCE Vulnerability - May20 (Windows)

2020-05-2500:00:00
Copyright (C) 2020 Greenbone Networks GmbH
plugins.openvas.org
94

Apache Tomcat is prone to a remote code execution vulnerability.

# Copyright (C) 2020 Greenbone Networks GmbH
# 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-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("1.3.6.1.4.1.25623.1.0.143964");
  script_version("2020-06-09T06:40:15+0000");
  script_tag(name:"last_modification", value:"2020-06-09 06:40:15 +0000 (Tue, 09 Jun 2020)");
  script_tag(name:"creation_date", value:"2020-05-25 09:17:17 +0000 (Mon, 25 May 2020)");
  script_tag(name:"cvss_base", value:"4.4");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:P/I:P/A:P");

  script_cve_id("CVE-2020-9484");

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

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

  script_name("Apache Tomcat RCE Vulnerability - May20 (Windows)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 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_windows");

  script_tag(name:"summary", value:"Apache Tomcat is prone to a remote code execution vulnerability.");

  script_tag(name:"insight", value:"If:

  - an attacker is able to control the contents and name of a file on the server and

  - the server is configured to use the PersistenceManager with a FileStore and

  - the PersistenceManager is configured with sessionAttributeValueClassNameFilter='null' (the default unless a
    SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be
    deserialized and

  - the attacker knows the relative file path from the storage location used by FileStore to the file the
    attacker has control over

  then, using a specifically crafted request, the attacker will be able to trigger remote code execution via
  deserialization of the file under their control. Note that all of conditions must be true for the attack to
  succeed.");

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

  script_tag(name:"affected", value:"Apache Tomcat 7.0.0 to 7.0.103, 8.5.0 to 8.5.54, 9.0.0.M1 to 9.0.34 and
  10.0.0-M1 to 10.0.0-M4.");

  script_tag(name:"solution", value:"Update to version 7.0.104, 8.5.55, 9.0.35, 10.0.0-M5 or later.");

  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/r77eae567ed829da9012cadb29af17f2df8fa23bf66faf88229857bb1%40%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"];
location = infos["location"];

if (version_in_range(version: version, test_version: "7.0.0", test_version2: "7.0.103")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "7.0.104", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "8.5.0", test_version2: "8.5.54")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "8.5.55", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if ((revcomp(a: version, b: "9.0.0.M1") >= 0) && (revcomp(a: version, b: "9.0.34") <= 0)) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.0.35", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if ((revcomp(a: version, b: "10.0.0.M1") >= 0) && (revcomp(a: version, b: "10.0.0.M4") <= 0)) {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.0.0-M5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);
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