ISC BIND lwresd Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2016 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106292");
  script_version("2023-07-20T05:05:17+0000");
  script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"creation_date", value:"2016-09-28 09:42:23 +0700 (Wed, 28 Sep 2016)");
  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:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-25 20:18:00 +0000 (Tue, 25 Aug 2020)");

  script_tag(name:"qod_type", value:"remote_banner_unreliable");

  script_cve_id("CVE-2016-2775");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("ISC BIND lwresd Denial of Service Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("gb_isc_bind_consolidation.nasl");
  script_mandatory_keys("isc/bind/detected");

  script_tag(name:"summary", value:"ISC BIND is prone to a 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 lwresd component in ISC BIND (which is not enabled by default)
  could crash while processing an overlong request name. This could lead to a denial of service.");

  script_tag(name:"impact", value:"An remote attacker may cause a denial of service condition.");

  script_tag(name:"solution", value:"Update to 9.9.9-P1, 9.10.4-P1, 9.11.0b1 or later.");

  script_xref(name:"URL", value:"https://kb.isc.org/article/AA-01393");

  exit(0);
}

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

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

if (!infos = get_app_full(cpe: CPE, port: port, exit_no_version: TRUE))
  exit(0);

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

if (version !~ "^9\.")
  exit(99);

if (version =~ "^9\.9\.[3-9]s[0-9]") {
  if (version_is_less(version: version, test_version: "9.9.9s3")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "9.9.9-S3", install_path: location);
    security_message(port: port, data: report, proto: proto);
    exit(0);
  }
} else {
  if (version_is_less(version: version, test_version: "9.9.9p2")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "9.9.9-P2", install_path: location);
    security_message(port: port, data: report, proto: proto);
    exit(0);
  }

  if (version_in_range(version: version, test_version: "9.10.0", test_version2: "9.10.4p1")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "9.10.4-P2", install_path: location);
    security_message(port: port, data: report, proto: proto);
    exit(0);
  }

  if ((revcomp(a: version, b: "9.11.0a3") >= 0) && (revcomp(a: version, b: "9.11.0b1") <= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "9.11.0b2", install_path: location);
    security_message(port: port, data: report, proto: proto);
    exit(0);
  }
}

exit(99);