F5 Networks BIG-IP : TMM vulnerability (K95117754)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K95117754.
#
# The text description of this plugin is (C) F5 Networks.
#

include('compat.inc');

if (description)
{
  script_id(132582);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/03");

  script_cve_id("CVE-2019-6684");

  script_name(english:"F5 Networks BIG-IP : TMM vulnerability (K95117754)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"Under certain conditions, a multi-bladed BIG-IP Virtual Clustered
Multiprocessing (vCMP) may drop broadcast packets when they are
rebroadcast to the vCMP guest secondary blades. An attacker can
leverage the fragmented broadcast IP packets to perform any type of
fragmentation-based attack. (CVE-2019-6684)

Impact

A remote attacker may cause the Traffic Management Microkernel (TMM)
to restart using maliciously constructed broadcast IP fragments.This
issue occurs on multi-blade chassis, including multi-blade vCMP
guests. This issue does not occur on single-bladed systems, on BIG-IP
Virtual Edition (VE), or on single-bladed vCMP guests.");
  script_set_attribute(attribute:"see_also", value:"https://my.f5.com/manage/s/article/K95117754");
  script_set_attribute(attribute:"solution", value:
"Upgrade to one of the non-vulnerable versions listed in the F5 Solution K95117754.");
  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-2019-6684");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/31");

  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) 2019-2023 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 = 'K95117754';
var vmatrix = {
  'AFM': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'AM': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'APM': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'ASM': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'AVR': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'DNS': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'GTM': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'LC': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'LTM': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  },
  'PEM': {
    'affected': [
      '15.0.0-15.0.1','14.0.0-14.1.2','13.0.0-13.1.3','12.1.0-12.1.5','11.5.2-11.6.5'
    ],
    'unaffected': [
      '15.1.0','15.0.1.3','14.1.2.3','13.1.3.2','12.1.5.1','11.6.5.2'
    ],
  }
};

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');
}