Nmap NSE net: dns-fuzz

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_nmap_dns_fuzz_net.nasl 5499 2017-03-06 13:06:09Z teissa $
#
# Autogenerated NSE wrapper
#
# Authors:
# NSE-Script: Michael Pattrick
# NASL-Wrapper: autogenerated
#
# Copyright:
# NSE-Script: The Nmap Security Scanner (http://nmap.org)
# Copyright (C) 2011 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.
###############################################################################

tag_summary = "This script launches a DNS fuzzing attack against any DNS server.

The script induces errors into randomly generated but valid DNS packets. The packet template that we
use includes one uncompressed and one compressed name.

Use the 'dns-fuzz.timelimit' argument to control how long the fuzzing lasts. This script
should be run for a long time. It will send a very large quantity of packets and thus it's pretty
invasive, so it should only be used against private DNS servers as part of a software development
lifecycle.


SYNTAX:

dns-fuzz.timelimit:  How long to run the fuzz attack. This is a
number followed by a suffix: 's' for seconds,
'm' for minutes, and 'h' for hours. Use
'0' for an unlimited amount of time. Default:
'10m'.";

if(description)
{
    script_id(104024);
    script_version("$Revision: 5499 $");
    script_tag(name:"last_modification", value:"$Date: 2017-03-06 14:06:09 +0100 (Mon, 06 Mar 2017) $");
    script_tag(name:"creation_date", value:"2011-06-01 16:32:46 +0200 (Wed, 01 Jun 2011)");
    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_name("Nmap NSE net: dns-fuzz");


    script_category(ACT_INIT);
    script_tag(name:"qod_type", value:"remote_analysis");
    script_copyright("NSE-Script: The Nmap Security Scanner; NASL-Wrapper: Greenbone Networks GmbH");
    script_family("Nmap NSE net");
    script_dependencies("nmap_nse_net.nasl");
    script_mandatory_keys("Tools/Launch/nmap_nse_net");

    script_add_preference(name:"dns-fuzz.timelimit", value:"", type:"entry");

    script_tag(name : "summary" , value : tag_summary);
    exit(0);
}


include("nmap.inc");

# The corresponding NSE script does't belong to the 'safe' category
if (safe_checks()) exit(0);

phase = 0;
if (defined_func("scan_phase")) {
    phase = scan_phase();
}

if (phase == 1) {
    # Get the preferences
    argv = make_array();

    pref = script_get_preference("dns-fuzz.timelimit");
    if (!isnull(pref) && pref != "") {
        argv["dns-fuzz.timelimit"] = string('"', pref, '"');
    }
    nmap_nse_register(script:"dns-fuzz", args:argv);
} else if (phase == 2) {
    res = nmap_nse_get_results(script:"dns-fuzz");
    foreach portspec (keys(res)) {
        output_banner = 'Result found by Nmap Security Scanner (dns-fuzz.nse) http://nmap.org:\n\n';
        if (portspec == "0") {
            security_message(data:output_banner + res[portspec], port:0);
        } else {
            v = split(portspec, sep:"/", keep:0);
            proto = v[0];
            port = v[1];
            security_message(data:output_banner + res[portspec], port:port, protocol:proto);
        }
    }
}