Savant original form CGI access

# SPDX-FileCopyrightText: 2001 SecuriTeam
# 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("1.3.6.1.4.1.25623.1.0.10623");
  script_version("2023-08-03T05:05:16+0000");
  script_tag(name:"last_modification", value:"2023-08-03 05:05:16 +0000 (Thu, 03 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:P/I:N/A:N");
  script_cve_id("CVE-2000-0521");
  script_name("Savant original form CGI access");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2001 SecuriTeam");
  script_dependencies("gb_savant_webserver_detect.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("savant/webserver/detected");

  script_xref(name:"URL", value:"http://www.securiteam.com/exploits/Savant_Webserver_exposes_CGI_script_source.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/1313");

  script_tag(name:"summary", value:"A security vulnerability in the Savant web server allows attackers to download the original form of CGIs(unprocessed).
  This would allow them to see any sensitive information stored inside those CGIs.");

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

  exit(0);
}

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

port = http_get_port(default:80);

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

foreach dir (make_list_unique("/", http_cgi_dirs(port:port))) {

  if(dir == "/") dir = "";

  if (http_is_cgi_installed_ka(port:port, item:string(dir, "/cgitest.exe"))) {

    data = http_get(item:string(dir, "/cgitest.exe"), port:port);

    soc = http_open_socket(port);
    send(socket:soc, data:data);
    res = http_recv(socket:soc);
    http_close_socket(soc);
    if ((res[0] == string("M")) && (res[1] == string("Z"))) {
      security_message(port:port);
      exit(0);
    } else {
      security_message(port:port);
      exit(0);
    }
  }
}

exit(99);