ISC BIND DNS64 and RPZ Denial of Service Vulnerability

##############################################################################
# OpenVAS Vulnerability Test
#
# ISC BIND DNS64 and RPZ Denial of Service Vulnerability
#
# Authors:
# Rinu Kuriakose <[email protected]>
#
# Copyright:
# Copyright (C) 2017 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

CPE = "cpe:/a:isc:bind";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.810547");
  script_version("2019-12-10T15:03:15+0000");
  script_cve_id("CVE-2017-3135");
  script_bugtraq_id(96150);
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"2019-12-10 15:03:15 +0000 (Tue, 10 Dec 2019)");
  script_tag(name:"creation_date", value:"2017-02-27 13:12:12 +0530 (Mon, 27 Feb 2017)");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_name("ISC BIND DNS64 and RPZ Denial of Service Vulnerability");

  script_tag(name:"summary", value:"The host is installed with ISC BIND and is
  prone to denial of service vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The flaw exists due to using both DNS64
  and RPZ to rewrite query responses, query processing can resume in an
  inconsistent state.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  attackers to cause an INSIST assertion failure (and subsequent abort) or an
  attempt to read through a NULL pointer.  On most platforms a NULL pointer
  read leads to a segmentation fault (SEGFAULT), which causes the process to
  be terminated.");

  script_tag(name:"affected", value:"ISC BIND versions 9.8.8, 9.9.3-S1 through 9.9.9-S7,
  9.9.3 through 9.9.9-P5, 9.9.10b1, 9.10.0 through 9.10.4-P5, 9.10.5b1, 9.11.0
  through 9.11.0-P2 and 9.11.1b1.");

  script_tag(name:"solution", value:"Upgrade to ISC BIND version 9.9.9-P6 or
  9.10.4-P6 or 9.11.0-P3 or 9.9.9-S8 or later.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_xref(name:"URL", value:"https://kb.isc.org/docs/aa-01453");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("Denial of Service");
  script_dependencies("bind_version.nasl");
  script_mandatory_keys("isc/bind/detected");
  exit(0);
}

include("version_func.inc");
include("host_details.inc");
include("revisions-lib.inc");

if( ! port = get_app_port( cpe:CPE ) )
  exit( 0 );

if( ! infos = get_app_version_and_proto( cpe:CPE, port:port ) )
  exit( 0 );

version = infos["version"];
proto = infos["proto"];

if(version =~ "^9\.")
{
  if (version =~ "^9\.9\.[3-9]s[1-7]")
  {
    fix = "9.9.9-S8";
    VULN = TRUE;
  }

  else if(version =~ "^9\.9\.[3-9]")
  {
    if(revcomp(a: version, b: "9.9.9p6") < 0)
    {
      fix = "9.9.9-P6";
      VULN = TRUE;
    }
  }
  else if(version =~ "^9\.10\.")
  {
    if(revcomp(a: version, b: "9.10.4p6") < 0)
    {
      fix = "9.10.4-P6";
      VULN = TRUE;
    }
  }
  else if(version =~ "^9\.11\.0")
  {
    if(revcomp(a: version, b: "9.11.0p3") < 0)
    {
      fix = "9.11.0-P3";
      VULN = TRUE;
    }
  }
  else if(version_is_equal(version:version, test_version:"9.11.1b1") ||
          version_is_equal(version:version, test_version:"9.10.5b1") ||
          version_is_equal(version:version, test_version:"9.8.8"))
  {
    fix = "9.11.0-P3 or 9.10.4-P6 or 9.9.9-P6 or 9.9.9-S8";
    VULN = TRUE;
  }
}

if(VULN)
{
  report = report_fixed_ver(installed_version:version, fixed_version:fix);
  security_message(data:report, port:port, proto:proto);
  exit(0);
}

exit(99);