Microsoft IIS UNC Mapped Virtual Host Vulnerability

# SPDX-FileCopyrightText: 2001 [email protected]
# 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("1.3.6.1.4.1.25623.1.0.11443");
  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_xref(name:"URL", value:"http://www.securityfocus.com/bid/1081");
  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-2000-0246");
  script_name("Microsoft IIS UNC Mapped Virtual Host Vulnerability");
  script_copyright("Copyright (C) 2001 [email protected]");
  script_category(ACT_GATHER_INFO);
  script_family("Web Servers");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 80);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"summary", value:"Your IIS webserver allows the retrieval of ASP/HTR source code.");

  script_tag(name:"impact", value:"An attacker can use this vulnerability to see how your
  pages interact and find holes in them to exploit.");

  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_vul");

  exit(0);
}

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

port = http_get_port( default:80 );
if ( ! http_can_host_asp( port:port ) ) exit( 0 );
host = http_host_name( dont_add_port:TRUE );

# common ASP files
check_files = make_list( "/index.asp%5C", "/default.asp%5C", "/login.asp%5C" );

files = http_get_kb_file_extensions( port:port, host:host, ext:"asp" );
if( ! isnull( files ) ) {
  files = make_list( files );
  check_files = make_list( check_files, files[0] + "%5C" );
}

foreach check_file( check_files ) {

  req = http_get( item:check_file, port:port );
  res = http_keepalive_send_recv( port:port, data:req );
  if( isnull( res ) ) exit( 0 );

  if( ereg( pattern:"^HTTP/1\.[01] 200", string:res ) &&
      "Content-Type: application/octet-stream" >< res ) {
    report = http_report_vuln_url( port:port, url:check_file );
    security_message( port:port, data:report );
    exit( 0 );
  }
}

exit( 99 );