CVSTrac invalid ticket DoS

# SPDX-FileCopyrightText: 2004 David Maciejak
# 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:cvstrac:cvstrac";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.14287");
  script_version("2023-08-01T13:29:10+0000");
  script_tag(name:"last_modification", value:"2023-08-01 13:29:10 +0000 (Tue, 01 Aug 2023)");
  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");
  script_name("CVSTrac invalid ticket DoS");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2004 David Maciejak");
  script_family("Web application abuses");
  script_dependencies("cvstrac_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("cvstrac/detected");

  script_tag(name:"solution", value:"Update to version 1.1.4 or disable this CGI suite.");

  script_tag(name:"summary", value:"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.");

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

  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( ereg( pattern:"^(0\.|1\.(0|1\.[0-3]([^0-9]|$)))", string:vers ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"1.1.4" );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );