Apache Struts Security Update (S2-065)

# SPDX-FileCopyrightText: 2023 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:struts";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.104914");
  script_version("2023-12-14T05:05:32+0000");
  script_tag(name:"last_modification", value:"2023-12-14 05:05:32 +0000 (Thu, 14 Dec 2023)");
  script_tag(name:"creation_date", value:"2023-09-14 11:30:14 +0000 (Thu, 14 Sep 2023)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/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:"2023-12-11 15:28:00 +0000 (Mon, 11 Dec 2023)");

  script_cve_id("CVE-2023-41835");

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

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

  script_name("Apache Struts Security Update (S2-065)");

  script_category(ACT_GATHER_INFO);

  script_family("Web application abuses");
  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_dependencies("gb_apache_struts_consolidation.nasl");
  script_mandatory_keys("apache/struts/detected");

  script_tag(name:"summary", value:"Apache Struts 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:"When a Multipart request is performed but some of the fields
  exceed the 'maxStringLength' limit, the upload files will remain in 'struts.multipart.saveDir'
  even if the request has been denied.");

  script_tag(name:"impact", value:"Excessive disk usage during file upload.");

  # nb: The vendor advisory had initially included the following affected range:
  # > Struts 2.0.0 - Struts 2.5.31, Struts 6.0.0 - Struts 6.3.0
  # but was updated later (See edit history) to have these more explicit affected ranges.
  script_tag(name:"affected", value:"Apache Struts version 2.5.31 only and 6.1.2.1 through 6.3.0.");

  script_tag(name:"solution", value:"Update to version 2.5.32, 6.1.2.2, 6.3.0.1 or later.");

  script_xref(name:"URL", value:"https://cwiki.apache.org/confluence/display/WW/S2-065");
  script_xref(name:"Advisory-ID", value:"S2-065");

  exit(0);
}

include("version_func.inc");
include("host_details.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_is_equal(version: version, test_version: "2.5.31")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.5.32", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

# nb:
# - There was no version like e.g. 3.0, 4.0 and so on (first version after 2.5.x was 6.0.0)
# - Seems only 6.1.2.1 was affected (see note above)
if (version_is_equal(version: version, test_version: "6.1.2.1")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.1.2.2", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

# nb: There was actually a 6.2.0 version after 6.1.x
if (version_in_range_exclusive(version: version, test_version_lo: "6.2.0", test_version_up: "6.3.0.1")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.3.0.1", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);