F5 Networks BIG-IP : OpenSSL vulnerability (K92451315)

##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K92451315.
#
# @NOAGENT@
##

include('compat.inc');

if (description)
{
  script_id(163235);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/03");

  script_cve_id("CVE-2020-1968");
  script_xref(name:"CEA-ID", value:"CEA-2021-0004");

  script_name(english:"F5 Networks BIG-IP : OpenSSL vulnerability (K92451315)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"The version of F5 Networks BIG-IP installed on the remote host is prior to 17.0.0. It is, therefore, affected by a
vulnerability as referenced in the K92451315 advisory.

  - The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to
    compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In
    such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent
    over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across
    multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites.
    This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL
    1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). (CVE-2020-1968)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://my.f5.com/manage/s/article/K92451315");
  script_set_attribute(attribute:"solution", value:
"Upgrade to one of the non-vulnerable versions listed in the F5 Solution K92451315.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1968");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/09/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/12/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/07/15");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_access_policy_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_advanced_firewall_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_acceleration_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_visibility_and_reporting");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_domain_name_system");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_global_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_link_controller");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_policy_enforcement_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"F5 Networks Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("f5_bigip_detect.nbin");
  script_require_keys("Host/local_checks_enabled", "Host/BIG-IP/hotfix", "Host/BIG-IP/modules", "Host/BIG-IP/version", "Settings/ParanoidReport");

  exit(0);
}


include('f5_func.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var version = get_kb_item('Host/BIG-IP/version');
if ( ! version ) audit(AUDIT_OS_NOT, 'F5 Networks BIG-IP');
if ( isnull(get_kb_item('Host/BIG-IP/hotfix')) ) audit(AUDIT_KB_MISSING, 'Host/BIG-IP/hotfix');
if ( ! get_kb_item('Host/BIG-IP/modules') ) audit(AUDIT_KB_MISSING, 'Host/BIG-IP/modules');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var sol = 'K92451315';
var vmatrix = {
  'AFM': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'AM': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'APM': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'ASM': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'AVR': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'DNS': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'GTM': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'LC': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'LTM': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  },
  'PEM': {
    'affected': [
      '16.0.0-16.1.4','15.1.0-15.1.10','14.1.0-14.1.5','13.1.0-13.1.5','12.1.0-12.1.5','11.6.1-11.6.5'
    ],
    'unaffected': [
      '17.0.0'
    ],
  }
};

if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
  var extra = NULL;
  if (report_verbosity > 0) extra = bigip_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : extra
  );
}
else
{
  var tested = bigip_get_tested_modules();
  var audit_extra = 'For BIG-IP module(s) ' + tested + ',';
  if (tested) audit(AUDIT_INST_VER_NOT_VULN, audit_extra, version);
  else audit(AUDIT_HOST_NOT, 'running any of the affected modules');
}