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nessusThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.BIND9_CVE-2018-5743.NASL
HistoryMay 07, 2019 - 12:00 a.m.

ISC BIND 9 Denial of Service Vulnerability (CVE-2018-5743)

2019-05-0700:00:00
This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
13

ISC BIND versions 9.9.x prior or equal to 9.10.8-P1, 9.11.x prior to 9.11.6-P1, 9.12.x prior to 9.12.4-P1, 9.13.0 prior or equal to 9.13.7, 9.14.0, and BIND 9 Supported Preview Edition versions 9.9.3-S1 prior or equal to to 9.11.5-S3, and 9.11.5-S5 are affected by a DoS vulnerability due to a flaw in the feature to limit the number of simultaneous TCP connections. An unauthenticated, remote attacker can exploit this issue, to cause the application to stop responding.

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(124652);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/22");

  script_cve_id("CVE-2018-5743");
  script_bugtraq_id(108077);
  script_xref(name:"IAVA", value:"2019-A-0139-S");

  script_name(english:"ISC BIND 9 Denial of Service Vulnerability (CVE-2018-5743)");
  script_summary(english:"Checks the version of ISC BIND.");

  script_set_attribute(attribute:"synopsis", value:
"The remote name server is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"ISC BIND versions 9.9.x prior or equal to 9.10.8-P1, 9.11.x prior to 9.11.6-P1, 9.12.x prior to 9.12.4-P1, 9.13.0 prior
or equal to 9.13.7, 9.14.0, and BIND 9 Supported Preview Edition versions 9.9.3-S1 prior or equal to to 9.11.5-S3, and
9.11.5-S5 are affected by a DoS vulnerability due to a flaw in the feature to limit the number of simultaneous TCP
connections. An unauthenticated, remote attacker can exploit this issue, to cause the application to stop responding.");
  script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/aa-00861");
  script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/aa-00913");
  script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/cve-2018-5743");
  script_set_attribute(attribute:"solution", value:
"Upgrade to ISC BIND version 9.11.6-P1, 9.12.4-P1, 9.14.1, 9.11.5-S6, 9.11.6-S1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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-2018-5743");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/04/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/07");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:isc:bind");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"DNS");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("bind_version.nasl");
  script_require_keys("bind/version", "Settings/ParanoidReport");

  exit(0);
}

include("vcf.inc");
include("vcf_extras.inc");

vcf::bind::initialize();

app_info = vcf::get_app_info(app:"BIND", port:53, kb_ver:"bind/version", service:TRUE, proto:"UDP");

if (report_paranoia < 2) audit(AUDIT_PARANOID);

constraints = [
  { "min_version" : "9.9.3-S1", "max_version" : "9.11.5-S3", "fixed_display" : "9.11.5-S6 \ 9.11.6-S1" },
  { "equal" : "9.11.5-S5", "fixed_display" : "9.11.5-S6 \ 9.11.6-S1" },
  { "min_version" : "9.9.0", "max_version" : "9.10.8-P1", "fixed_display" : "9.11.6-P1 \ 9.12.4-P1 \ 9.14.1" },
  { "min_version" : "9.11.0", "fixed_version" : "9.11.6-P1" },
  { "min_version" : "9.12.0", "fixed_version" : "9.12.4-P1" },
  { "min_version" : "9.13.0", "max_version" : "9.13.7", "fixed_display" : "9.14.1" },
  { "min_version" : "9.14.0", "fixed_version" : "9.14.1" },
];
constraints = vcf::bind::filter_constraints(constraints:constraints, version:app_info.version);

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
VendorProductVersionCPE
iscbindcpe:/a:isc:bind