F5 Networks BIG-IP : BIG-IP DNS Cache vulnerability (K48224824)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K48224824.
#
# The text description of this plugin is (C) F5 Networks.
#

include('compat.inc');

if (description)
{
  script_id(118670);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/02");

  script_cve_id("CVE-2018-5532");

  script_name(english:"F5 Networks BIG-IP : BIG-IP DNS Cache vulnerability (K48224824)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"On F5 BIG-IP 13.0.0, 12.1.0-12.1.2, 11.6.0-11.6.3.1, or 11.2.1-11.5.6
a domain name cached within the DNS Cache of TMM may continue to be
resolved by the cache even after the parent server revokes the record,
if the DNS Cache is receiving a stream of requests for the cached
name. (CVE-2018-5532)

Impact

The BIG-IP system may continue to serve responses from the DNS
Cachefor as long as the system receives requests for the cached name,
even though the authoritative nameserver removed the name.");
  script_set_attribute(attribute:"see_also", value:"https://my.f5.com/manage/s/article/K48224824");
  script_set_attribute(attribute:"solution", value:
"Upgrade to one of the non-vulnerable versions listed in the F5 Solution K48224824.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:L/PR:N/UI:N/S:U/C:N/I:L/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-2018-5532");

  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:"2018/07/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/18");
  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_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:/a:f5:big-ip_webaccelerator");
  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 = 'K48224824';
var vmatrix = {
  'AFM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'AM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'APM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'ASM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'AVR': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'DNS': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'GTM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'LC': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'LTM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'PEM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  },
  'WAM': {
    'affected': [
      '13.0.0','12.1.0-12.1.2','11.6.1-11.6.3','11.2.1-11.5.6'
    ],
    'unaffected': [
      '13.1.0','13.0.0 HF1','12.1.3','11.6.3.2','11.5.7'
    ],
  }
};

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');
}