F5 BIG-IP - OpenSSL vulnerabilities CVE-2016-0703 and CVE-2016-0704

# 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:/h:f5:big-ip";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105567");
  script_version("2026-04-24T06:23:04+0000");
  script_tag(name:"last_modification", value:"2026-04-24 06:23:04 +0000 (Fri, 24 Apr 2026)");
  script_tag(name:"creation_date", value:"2016-03-15 12:34:21 +0100 (Tue, 15 Mar 2016)");
  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:"2018-01-18 18:18:00 +0000 (Thu, 18 Jan 2018)");

  script_cve_id("CVE-2016-0703", "CVE-2016-0704");

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

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

  script_name("F5 BIG-IP - OpenSSL vulnerabilities CVE-2016-0703 and CVE-2016-0704");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("F5 Local Security Checks");
  script_dependencies("gb_f5_big_ip_ssh_login_detect.nasl");
  script_mandatory_keys("f5/big_ip/version", "f5/big_ip/active_modules");

  script_tag(name:"summary", value:"The F5 BIG-IP system is missing a security update announced via
  the referenced vendor advisory.");

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

  script_tag(name:"insight", value:"- CVE-2016-0703: The get_client_master_key function in s2_srvr.c
  in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m,
  and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an
  arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and
  decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to
  CVE-2016-0800.

  - CVE-2016-0704: An oracle protection mechanism in the get_client_master_key function in s2_srvr.c
  in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m,
  and 1.0.2 before 1.0.2a overwrites incorrect MASTER-KEY bytes during use of export cipher suites,
  which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a
  Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.");

  script_tag(name:"impact", value:"This issue is exposed only to SSLv2 and is related to the DROWN
  vulnerability (CVE-2016-0800). BIG-IP is not vulnerable to these vulnerabilities in the default
  configuration. F5 recommends that you do not use the SSLv2 protocol, and it is not enabled in the
  BIG-IP default configuration. Configurations that manually enable SSLv2 expose this
  vulnerability.");

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");

  script_xref(name:"URL", value:"https://my.f5.com/manage/s/article/K95463126");
  script_xref(name:"URL", value:"https://openssl-library.org/news/secadv/20160301.txt");

  exit(0);
}

include("f5.inc");
include("host_details.inc");
include("list_array_func.inc");
include("version_func.inc");

if (!version = get_app_version(cpe: CPE, service: "ssh-login"))
  exit(0);

check_f5["LTM"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;11.2.1_HF15;");

check_f5["AAM"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.4.0-11.4.1_HF8;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;");

check_f5["AFM"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;");

check_f5["AVR"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;11.0.0-11.2.1_HF14;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;11.2.1_HF15;");

check_f5["APM"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;11.2.1_HF15;");

check_f5["ASM"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;11.2.1_HF15;");

check_f5["GTM"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;11.2.1_HF15;");

check_f5["LC"]  = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;11.2.1_HF15;");

check_f5["PEM"] = make_array("affected",   "11.6.0-11.6.0_HF4;11.5.0-11.5.3_HF1;11.3.0-11.4.1_HF8;",
                             "unaffected", "12.0.0;11.6.1;11.6.0_HF5;11.5.4;11.5.3_HF2;11.4.1_HF9;");

check_f5["PSM"] = make_array("affected",   "11.3.0-11.4.1_HF8;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "11.4.1_HF9;11.2.1_HF15;");

check_f5["WAM"] = make_array("affected",   "11.3.0;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "11.2.1_HF15;");

check_f5["WOM"] = make_array("affected",   "11.3.0;11.0.0-11.2.1_HF14;10.1.0-10.2.4;",
                             "unaffected", "11.2.1_HF15;");

if (report = f5_is_vulnerable(ca: check_f5, version: version)) {
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);