OpenSSL Security Bypass Vulnerability (Dec 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:openssl:openssl";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.107260");
  script_version("2024-02-28T05:05:37+0000");
  script_tag(name:"last_modification", value:"2024-02-28 05:05:37 +0000 (Wed, 28 Feb 2024)");
  script_tag(name:"creation_date", value:"2017-12-08 12:22:37 +0100 (Fri, 08 Dec 2017)");
  script_cve_id("CVE-2017-3737");

  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  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:"qod_type", value:"remote_banner_unreliable");
  script_name("OpenSSL Security Bypass Vulnerability (Dec 2017) - Linux");

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

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

  script_tag(name:"insight", value:"When SSL_read()/SSL_write() is subsequently called by the
  application for the same SSL object then it will succeed and the data is passed without being
  decrypted/encrypted directly from the SSL/TLS record layer.");

  script_tag(name:"impact", value:"Successfully exploiting this issue will allow attackers
  to bypass security restrictions and perform unauthorized actions. This may aid in launching
  further attacks.");

  script_tag(name:"affected", value:"OpenSSL 1.0.2 (starting from version 1.0.2b) before 1.0.2n.");

  script_tag(name:"solution", value:"OpenSSL 1.0.2 users should upgrade to 1.0.2n.");

  script_xref(name:"URL", value:"https://www.openssl.org/news/secadv/20171207.txt");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/102103");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("General");
  script_dependencies("gb_openssl_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("openssl/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 =~ "^1\.0\.2") {
  if(version_in_range(version:vers, test_version:"1.0.2b", test_version2:"1.0.2m")) {
    report = report_fixed_ver(installed_version:vers, fixed_version:"1.0.2n", install_path:path);
    security_message(port:port, data:report);
    exit(0);
  }
}

exit(99);