Oracle OpenJDK ECDSA Signatures Vulnerability (CVE-2022-21449)

# Copyright (C) 2022 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:oracle:openjdk";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.113919");
  script_version("2022-05-02T06:59:15+0000");
  script_tag(name:"last_modification", value:"2022-05-02 06:59:15 +0000 (Mon, 02 May 2022)");
  script_tag(name:"creation_date", value:"2022-04-21 07:39:21 +0000 (Thu, 21 Apr 2022)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-04-29 03:15:00 +0000 (Fri, 29 Apr 2022)");

  script_cve_id("CVE-2022-21449");

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

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

  script_name("Oracle OpenJDK ECDSA Signatures Vulnerability (CVE-2022-21449)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("secpod_openjdk_detect.nasl");
  script_mandatory_keys("openjdk/detected");

  script_tag(name:"summary", value:"Oracle OpenJDK is prone to vulnerability in the implementation
  of ECDSA signature verification (Component: security-libs/java.security).");

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

  script_tag(name:"insight", value:"The implementation of ECDSA signature verification didn't check
  if the two values r or s within an ECDSA signature were zero, so you could produce a signature
  value in which they are both 0 (appropriately encoded) and Java would accept it as a valid
  signature for any message and for any public key.

  Please seee the referenced 'Psychic Signatures in Java' blog post for more technical background
  info.");

  script_tag(name:"affected", value:"Oracle OpenJDK versions 15, 17 and 18.");

  script_tag(name:"solution", value:"The vendor has released updates. Please see the references for
  more information.");

  script_xref(name:"URL", value:"https://openjdk.java.net/groups/vulnerability/advisories/2022-04-19");
  script_xref(name:"URL", value:"https://mail.openjdk.java.net/pipermail/vuln-announce/2022-April/000015.html");
  script_xref(name:"URL", value:"https://neilmadden.blog/2022/04/19/psychic-signatures-in-java/");

  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);

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

if (vers =~ "^15\." && version_is_less(version: vers, test_version: "15.0.7")) {
  report = report_fixed_ver(installed_version: vers, fixed_version: "15.0.7", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

if (vers =~ "^17\." && version_is_less(version: vers, test_version: "17.0.3")) {
  report = report_fixed_ver(installed_version: vers, fixed_version: "17.0.3", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

if (vers =~ "^18\." && version_is_less(version: vers, test_version: "18.0.1")) {
  report = report_fixed_ver(installed_version: vers, fixed_version: "18.0.1", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);