CVSTrac < 1.1.4 Malformed URI Infinite Loop DoS Vulnerability

# 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("1.3.6.1.4.1.25623.1.0.14289");
  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:"8646");
  script_name("CVSTrac < 1.1.4 Malformed URI Infinite Loop DoS Vulnerability");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2004 David Maciejak");
  script_family("Web application abuses");
  script_dependencies("cvstrac_detect.nasl");
  script_mandatory_keys("cvstrac/detected");

  script_tag(name:"summary", value:"CVSTrac is prone to a denial of service (DoS) vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"CVSTrac contains a flaw related to the parameter parser that may
  allow an attacker to create a malformed URL, which causes the application to hang. An attacker,
  exploiting this flaw, would only need network access to the cvstrac server. Upon sending a
  malformed link, the cvstrac server would go into an infinite loop, rendering the services as
  unavailable.");

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

  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 );