Vulnerabilities > CVE-2018-5737 - Reachable Assertion vulnerability in multiple products

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

include("compat.inc");

if (description)
{
  script_id(109947);
  script_version("1.6");
  script_cvs_date("Date: 2019/11/04");

  script_cve_id("CVE-2018-5736", "CVE-2018-5737");

  script_name(english:"ISC BIND 9.12.x < 9.12.1-P1 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of BIND.");

  script_set_attribute(attribute:"synopsis", value:
"The remote name server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of ISC BIND running on the remote name server is 9.12.x 
prior to 9.12.1-P2. It is, therefore, affected by multiple 
vulnerabilities.");
  script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/aa-01602");
  script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/aa-01606");
  # https://www.us-cert.gov/ncas/current-activity/2018/05/18/ISC-Releases-Security-Advisories-BIND
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b1939e95");
  script_set_attribute(attribute:"solution", value:
"Upgrade to ISC BIND version 9.12.1-P2 or later.");
  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-2018-5737");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/22");

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

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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");

constraints = [
  { "min_version" : "9.12.0", "fixed_version" : "9.12.1-P2" },
];
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);

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

include("compat.inc");

if (description)
{
  script_id(122239);
  script_version("1.2");
  script_cvs_date("Date: 2019/10/31 15:18:51");

  script_cve_id("CVE-2018-5737");
  script_bugtraq_id(104236);

  script_name(english:"ISC BIND Assertion Failure Vulnerability (DoS)");
  script_summary(english:"Checks the version of BIND.");

  script_set_attribute(attribute:"synopsis", value:
"The remote name server is affected by an assertion failure vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the instance of ISC BIND 9
running on the remote name server is 9.12.0 or 9.12.1.  It is,
therefore, affected by an assertion failure vulnerability which
exists in the rbtdb.c due to the implementation of the new 
serve-stale feature and NSEC aggressive negative caching.

An unauthenticated, remote attacker can exploit this to cause 
undesirable behavior such as recurision looping or excessive
logging, resulting in a degradation or denial of service.");
  script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/AA-01602");
  script_set_attribute(attribute:"solution", value:
"Upgrade to ISC BIND version 9.12.1-P2 or later.");
  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-2018-5737");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/15");

  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_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019 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");

if (report_paranoia < 2) audit(AUDIT_PARANOID); # patch can be applied

vcf::bind::initialize();

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

constraints = [
  { "min_version" : "9.12.0", "max_version" : "9.12.1", "fixed_version" : "9.12.1-P2" }
];
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);

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2019 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(109929);
  script_version("1.6");
  script_cvs_date("Date: 2019/02/14 10:37:32");

  script_cve_id("CVE-2018-5736", "CVE-2018-5737");

  script_name(english:"FreeBSD : BIND -- multiple vulnerabilities (94599fe0-5ca3-11e8-8be1-d05099c0ae8c)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"ISC reports :

An error in zone database reference counting can lead to an assertion
failure if a server which is running an affected version of BIND
attempts several transfers of a slave zone in quick succession.

A problem with the implementation of the new serve-stale feature in
BIND 9.12 can lead to an assertion failure in rbtdb.c, even when
stale-answer-enable is off. Additionally, problematic interaction
between the serve-stale feature and NSEC aggressive negative caching
can in some cases cause undesirable behavior from named, such as a
recursion loop or excessive logging."
  );
  # https://kb.isc.org/article/AA-01602
  script_set_attribute(
    attribute:"see_also",
    value:"https://kb.isc.org/docs/aa-01602"
  );
  # https://kb.isc.org/article/AA-01606
  script_set_attribute(
    attribute:"see_also",
    value:"https://kb.isc.org/docs/aa-01606"
  );
  # https://vuxml.freebsd.org/freebsd/94599fe0-5ca3-11e8-8be1-d05099c0ae8c.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?0fd4fcdc"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:bind912");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/05/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/21");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"bind912<9.12.1P2")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");