Apache Tomcat DoS Vulnerability (Jun 2019) - Linux

# SPDX-FileCopyrightText: 2019 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:tomcat";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.107014");
  script_version("2025-09-17T05:39:26+0000");
  script_tag(name:"last_modification", value:"2025-09-17 05:39:26 +0000 (Wed, 17 Sep 2025)");
  script_tag(name:"creation_date", value:"2019-06-21 15:57:58 +0200 (Fri, 21 Jun 2019)");
  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:"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:"2021-06-14 18:15:00 +0000 (Mon, 14 Jun 2021)");

  script_cve_id("CVE-2019-10072");

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

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

  script_name("Apache Tomcat DoS Vulnerability (Jun 2019) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Denial of Service");
  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 denial of service vulnerability in the HTTP/2
  implementation.");

  script_tag(name:"insight", value:"The HTTP/2 implementation accepts streams with excessive numbers of SETTINGS
  frames and also permitts clients to keep streams open without reading/writing request/response data. By keeping
  streams open for requests that utilises the Servlet API's blocking I/O, clients are able to cause server-side
  threads to block eventually leading to thread exhaustion and a DoS.");

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

  script_tag(name:"affected", value:"Apache Tomcat 8.5.0 to 8.5.40 and 9.0.0.M1 to 9.0.19.");

  script_tag(name:"solution", value:"Update to version 8.5.41, 9.0.20 or later.");

  script_xref(name:"URL", value:"http://tomcat.apache.org/security-9.html");
  script_xref(name:"URL", value:"http://tomcat.apache.org/security-8.html");

  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:"8.5.0", test_version2:"8.5.40" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"8.5.41", 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:"9.0.19" ) <= 0 ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"9.0.20", install_path:path );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );