Microsoft IIS .IDA ISAPI Filter Applied - Active Check

Microsoft IIS .IDA ISAPI Filter vulnerability present. Mitigate by removing .IDA extension and install URLSCAN

Reporter	Title	Published	Views	Family All 19
Circl	CVE-2001-0500	15 Jun 201000:00	–	circl
Check Point Advisories	Microsoft IIS ISAPI Extension Indexing Service Buffer Overflow (MS01-033; CVE-2001-0500)	13 Dec 200900:00	–	checkpoint_advisories
Check Point Advisories	Microsoft IIS idq.dll IDAIDQ ISAPI Overflow Buffer Overflow - Ver2 (CVE-2001-0500)	28 Dec 201400:00	–	checkpoint_advisories
Check Point Advisories	Microsoft IIS Command Execution (CVE-2001-0500) - Ver2	28 Jun 201800:00	–	checkpoint_advisories
CVE	CVE-2001-0500	9 Mar 200205:00	–	cve
Cvelist	CVE-2001-0500	9 Mar 200205:00	–	cvelist
Exploit DB	Microsoft IIS 5.0 - IDQ Path Overflow (MS01-033) (Metasploit)	15 Jun 201000:00	–	exploitdb
Tenable Nessus	Microsoft IIS ISAPI Filter Multiple Vulnerabilities (MS01-044)	19 Jun 200100:00	–	nessus
canvas	Immunity Canvas: MS01_033	21 Jul 200104:00	–	canvas
Metasploit	MS01-033 Microsoft IIS 5.0 IDQ Path Overflow	13 Sep 200606:20	–	metasploit

Source	Link
securityfocus	www.securityfocus.com/bid/2880

# SPDX-FileCopyrightText: 2001 Matt Moore
# 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

CPE = "cpe:/a:microsoft:internet_information_services";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.10695");
  script_version("2023-10-10T05:05:41+0000");
  script_tag(name:"last_modification", value:"2023-10-10 05:05:41 +0000 (Tue, 10 Oct 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_xref(name:"IAVA", value:"2001-a-0008");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/2880");
  script_cve_id("CVE-2001-0500");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_name("Microsoft IIS .IDA ISAPI Filter Applied - Active Check");
  script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"remote_analysis");
  script_copyright("Copyright (C) 2001 Matt Moore");
  script_family("Web Servers");
  script_dependencies("gb_microsoft_iis_http_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("microsoft/iis/http/detected");

  script_tag(name:"summary", value:"Indexing Service filter is enabled on the remote Web server.");

  script_tag(name:"insight", value:"The IIS server appears to have the .IDA ISAPI filter mapped.

  At least one remote vulnerability has been discovered for the .IDA
  (indexing service) filter. This is detailed in Microsoft Advisory
  MS01-033, and gives remote SYSTEM level access to the web server.

  It is recommended that even if you have patched this vulnerability that
  you unmap the .IDA extension, and any other unused ISAPI extensions
  if they are not required for the operation of your site.");

  script_tag(name:"solution", value:"To unmap the .IDA extension:

  1.Open Internet Services Manager.

  2.Right-click the Web server choose Properties from the context menu.

  3.Master Properties

  4.Select WWW Service -> Edit -> HomeDirectory -> Configuration
  and remove the reference to .ida from the list.

  In addition, you may wish to download and install URLSCAN from the
  Microsoft Technet web site. URLSCAN, by default, blocks all .ida
  requests to the IIS server.");

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

  exit(0);
}

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

if(!port = get_app_port(cpe:CPE, service:"www"))
  exit(0);

if(!get_app_location(cpe:CPE, port:port, nofork:TRUE))
  exit(0);

req = http_get(item:"/NULL.ida", port:port);
soc = http_open_socket(port);
if(!soc)
  exit(0);

send(socket:soc, data:req);
r = http_recv(socket:soc);
http_close_socket(soc);
look = strstr(r, "<HTML>");
look = look - string("\r\n");
if(egrep(pattern:"^.*HTML.*IDQ.*NULL\.ida.*$", string:look))
  security_message(port);

10 Oct 2023 00:00Current

6.5Medium risk

Vulners AI Score6.5

CVSS 210

EPSS0.96731