Apache Tomcat Security Manager Bypass Vulnerability (Feb 2016) - Linux

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.807414");
  script_version("2024-02-08T05:05:59+0000");
  script_cve_id("CVE-2016-0763");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2024-02-08 05:05:59 +0000 (Thu, 08 Feb 2024)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-03-21 15:59:00 +0000 (Thu, 21 Mar 2019)");
  script_tag(name:"creation_date", value:"2016-02-25 14:43:49 +0530 (Thu, 25 Feb 2016)");
  script_name("Apache Tomcat Security Manager Bypass Vulnerability (Feb 2016) - Linux");

  script_tag(name:"summary", value:"Apache Tomcat is prone to a security manager bypass vulnerability.");

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

  script_tag(name:"insight", value:"The flaw is due to an improper validation of
  'ResourceLinkFactory.setGlobalContext()' method and is accessible by web
   applications running under a security manager without any checks.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  authenticated users to bypass intended SecurityManager restrictions and read
  or write to arbitrary application data, or cause a denial of service.");

  script_tag(name:"affected", value:"Apache Tomcat 7.0.0 before 7.0.68,
  8.0.0.RC1 before 8.0.31, and 9.0.0.M1 before 9.0.0.M2 on Linux.");

  script_tag(name:"solution", value:"Upgrade to version 7.0.68 or
  8.0.32 or 9.0.0.M3 or later.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_xref(name:"URL", value:"http://tomcat.apache.org/security-9.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/83326");
  script_xref(name:"URL", value:"http://tomcat.apache.org/security-8.html");
  script_xref(name:"URL", value:"http://tomcat.apache.org/security-7.html");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 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( appPort = get_app_port( cpe:CPE ) ) )
  exit( 0 );

if( ! infos = get_app_version_and_location( cpe:CPE, port:appPort, exit_no_version:TRUE ) )
  exit( 0 );

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

if(appVer =~ "^[7-9]\.")
{
  if(version_in_range(version:appVer, test_version:"7.0.0", test_version2:"7.0.67"))
  {
    fix = "7.0.68";
    VULN = TRUE;
  }

  if(version_in_range(version:appVer, test_version:"8.0.0.RC1", test_version2:"8.0.30"))
  {
    fix = "8.0.32";
    VULN = TRUE;
  }

  if(version_in_range(version:appVer, test_version:"9.0.0.M1", test_version2:"9.0.0.M2"))
  {
    fix = "9.0.0.M3";
    VULN = TRUE;
  }

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