Zabbix < 1.6.6 DoS Vulnerability

# Copyright (C) 2009 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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:zabbix:zabbix";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100404");
  script_version("2022-02-23T10:57:32+0000");
  script_tag(name:"last_modification", value:"2022-02-23 10:57:32 +0000 (Wed, 23 Feb 2022)");
  script_tag(name:"creation_date", value:"2009-12-17 19:46:08 +0100 (Thu, 17 Dec 2009)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_cve_id("CVE-2009-4500");

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

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

  script_name("Zabbix < 1.6.6 DoS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2009 Greenbone Networks GmbH");
  script_family("Denial of Service");
  script_dependencies("gb_zabbix_http_detect.nasl");
  script_mandatory_keys("zabbix/detected");

  script_tag(name:"summary", value:"Zabbix is prone to a denial of service (DoS) vulnerability
  because of a NULL-pointer dereference.");

  script_tag(name:"impact", value:"Successful exploits may allow remote attackers to cause DoS
  conditions. Given the nature of this issue, attackers may also be able to run arbitrary code,
  but this has not been confirmed.");

  script_tag(name:"affected", value:"Zabbix prior to version 1.6.6.");

  script_tag(name:"solution", value:"Update to version 1.6.6 or later.");

  script_xref(name:"URL", value:"https://support.zabbix.com/browse/ZBX-993");

  exit(0);
}

include("version_func.inc");
include("host_details.inc");

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

if( ! vers = get_app_version( cpe:CPE, port:port ) )
  exit( 0 );

if( version_is_less( version:vers, test_version:"1.6.6" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"1.6.6" );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );