Apache Tomcat RCE Vulnerability (Mar 2021) - Linux

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.145477");
  script_version("2024-02-22T05:06:55+0000");
  script_tag(name:"last_modification", value:"2024-02-22 05:06:55 +0000 (Thu, 22 Feb 2024)");
  script_tag(name:"creation_date", value:"2021-03-02 05:06:07 +0000 (Tue, 02 Mar 2021)");
  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_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-07-20 23:15:00 +0000 (Tue, 20 Jul 2021)");

  script_cve_id("CVE-2021-25329");

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

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

  script_name("Apache Tomcat RCE Vulnerability (Mar 2021) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 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");

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

  script_tag(name:"insight", value:"The fix for CVE-2020-9484 was incomplete. When using a highly unlikely
  configuration edge case, the Tomcat instance is still vulnerable to CVE-2020-9484. Note that both the
  previously published prerequisites for CVE-2020-9484 also apply to this issue.");

  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.x - 7.0.107, 8.5.x - 8.5.61, 9.0.0.M1 - 9.0.41 and
  10.0.x prior to 10.0.1.");

  script_tag(name:"solution", value:"Update to version 7.0.108, 8.5.63, 9.0.43, 10.0.2 or later.");

  script_xref(name:"URL", value:"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cannounce.tomcat.apache.org%3E");
  script_xref(name:"URL", value:"https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.0.2");
  script_xref(name:"URL", value:"https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.43");
  script_xref(name:"URL", value:"https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.63");
  script_xref(name:"URL", value:"https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.108");

  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: "7.0.107")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "7.0.108", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "8.5.0", test_version2: "8.5.61")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "8.5.63", 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: "9.0.41") <= 0)) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.0.43", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version =~ "^10\.0\.0") {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.0.2", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);