Apache Tomcat DoS and Information Disclosure Vulnerabilities (Apr 2017) - Linux

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.810767");
  script_version("2025-12-12T15:41:28+0000");
  script_cve_id("CVE-2017-5650", "CVE-2017-5651");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2025-12-12 15:41:28 +0000 (Fri, 12 Dec 2025)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
  script_tag(name:"creation_date", value:"2017-04-21 16:12:24 +0530 (Fri, 21 Apr 2017)");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_name("Apache Tomcat DoS and Information Disclosure Vulnerabilities (Apr 2017) - Linux");

  script_tag(name:"summary", value:"Apache Tomcat is prone to denial of service (DoS) and
  information disclosure vulnerabilities.");

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

  script_tag(name:"insight", value:"- The handling of an HTTP/2 GOAWAY frame for a connection did not close
    streams associated with that connection that were currently waiting for
    a WINDOW_UPDATE before allowing the application to write more data

  - The refactoring of the HTTP connectors for 8.5.x onwards, introduced a
    regression in the send file processing. If the send file processing
    completed quickly, it was possible for the Processor to be added to the
    processor cache twice.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  attackers to consume all available processing threads and obtain sensitive
  information from requests other than their own.");

  script_tag(name:"affected", value:"Apache Tomcat versions 9.0.0.M1 to 9.0.0.M18 and
  Apache Tomcat versions 8.5.0 to 8.5.12 on Linux.");

  script_tag(name:"solution", value:"Upgrade to version 9.0.0.M19, 8.5.13 or later.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_xref(name:"URL", value:"http://tomcat.apache.org/security-9.html");
  script_xref(name:"URL", value:"http://tomcat.apache.org/security-8.html");
  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/6694538826b87522fb723d2dcedd537e14ebe0a381d92e5525a531d8@%3Cannounce.tomcat.apache.org%3E");
  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/d24303fb095db072740d8154b0f0db3f2b8f67bc91a0562dbe89c738@%3Cannounce.tomcat.apache.org%3E");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Web Servers");
  script_dependencies("gb_apache_tomcat_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("apache/tomcat/detected", "Host/runs_unixoide");
  exit(0);
}

include("host_details.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);

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

if(vers =~ "^[89]\.") {
  if(version_in_range(version:vers, test_version:"8.5.0", test_version2:"8.5.12")) {
    fix = "8.5.13";
    VULN = TRUE;
  }

  else if(version_in_range(version:vers, test_version:"9.0.0.M1", test_version2:"9.0.0.M18")) {
    fix = "9.0.0.M19";
    VULN = TRUE;
  }

  if(VULN) {
    report = report_fixed_ver(installed_version:vers, fixed_version:fix, install_path:path);
    security_message(port:port, data:report);
    exit(0);
  }
}

exit(99);