CVSTrac invalid ticket DoS

# OpenVAS Vulnerability Test
# $Id: cvstrac_invalid_ticket_dos.nasl 8023 2017-12-07 08:36:26Z teissa $
# Description: CVSTrac invalid ticket DoS
#
# Authors:
# David Maciejak <david dot maciejak at kyxar dot fr>
# based on work from (C) Tenable Network Security
#
# Copyright:
# Copyright (C) 2004 David Maciejak
#
# 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 = "The remote host seems to be running cvstrac, 
a web-based bug and patch-set tracking system for CVS.

This version contains a flaw related to invalid tickets 
that may allow an attacker to cause the application to crash.
An attacker, exploiting this flaw, would be able to remotely
shut down the cvstrac server.

***** OpenVAS has determined the vulnerability exists on the target
***** simply by looking at the version number(s) of CVSTrac
***** installed there.";

tag_solution = "Update to version 1.1.4 or disable this CGI suite";

if(description)
{
 script_id(14287);
 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_xref(name:"OSVDB", value:"8644");
 name = "CVSTrac invalid ticket DoS";

 script_name(name);
 


 
 
 script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"remote_banner");
 
 
 script_copyright("This script is Copyright (C) 2004 David Maciejak");
 family = "Web application abuses";
 script_family(family);
 script_dependencies("cvstrac_detect.nasl");
 script_require_ports("Services/www", 80);
 script_tag(name : "solution" , value : tag_solution);
 script_tag(name : "summary" , value : tag_summary);
 exit(0);
}

#
# The script code starts here
#

include("http_func.inc");
port = get_http_port(default:80);
kb = get_kb_item("www/" + port + "/cvstrac" );
if ( ! kb ) exit(0);
stuff = eregmatch(pattern:"(.*) under (.*)", string:kb );
version = stuff[1]; 
if(ereg(pattern:"^(0\.|1\.(0|1\.[0-3]([^0-9]|$)))", string:version))
	security_message(port);