F5 Networks BIG-IP : BIG-IP Client SSL vulnerability (K43121447)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K43121447.
#
# The text description of this plugin is (C) F5 Networks.
#

include('compat.inc');

if (description)
{
  script_id(118660);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/02");

  script_cve_id("CVE-2018-5502");

  script_name(english:"F5 Networks BIG-IP : BIG-IP Client SSL vulnerability (K43121447)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"Attackers may be able to disrupt services on the BIG-IP system with
maliciously crafted client certificate. This vulnerability affects
virtual servers associated with Client SSL profile which enables the
use of client certificate authentication. Client certificate
authentication is not enabled by default in Client SSL profile. There
is no control plane exposure. (CVE-2018-5502)

Impact

The BIG-IP system may temporarily fail to process traffic as it
recovers from a Traffic Management Microkernel (TMM) restart, and
devices configured as a high-availability (HA) pair may fail over.");
  script_set_attribute(attribute:"see_also", value:"https://my.f5.com/manage/s/article/K43121447");
  script_set_attribute(attribute:"solution", value:
"Upgrade to one of the non-vulnerable versions listed in the F5 Solution K43121447.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-5502");

  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:"2018/03/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/02");

  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_local_traffic_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) 2018-2023 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");

  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');

var sol = 'K43121447';
var vmatrix = {
  'AFM': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  },
  'AM': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  },
  'APM': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  },
  'ASM': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  },
  'AVR': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  },
  'DNS': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  },
  'GTM': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  },
  'LTM': {
    'affected': [
      '13.1.0','13.0.0'
    ],
    'unaffected': [
      '14.0.0','13.1.0.4','13.0.1'
    ],
  }
};

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');
}