ILIAS Detection (HTTP)

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.140443");
  script_version("2026-02-02T05:59:28+0000");
  script_tag(name:"last_modification", value:"2026-02-02 05:59:28 +0000 (Mon, 02 Feb 2026)");
  script_tag(name:"creation_date", value:"2017-10-20 10:51:43 +0700 (Fri, 20 Oct 2017)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:N");

  script_tag(name:"qod_type", value:"remote_banner");

  script_name("ILIAS Detection (HTTP)");

  script_tag(name:"summary", value:"HTTP based detection of ILIAS eLearning.");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Product detection");
  script_dependencies("find_service.nasl", "no404.nasl", "webmirror.nasl", "DDI_Directory_Scanner.nasl", "gb_php_http_detect.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 443);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_xref(name:"URL", value:"https://www.ilias.de");

  exit(0);
}

include("cpe.inc");
include("host_details.inc");
include("http_func.inc");
include("http_keepalive.inc");
include("port_service_func.inc");
include("list_array_func.inc");
include("misc_func.inc");

port = http_get_port(default: 443);

if (!http_can_host_php(port: port))
  exit(0);

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

  found = FALSE;
  version = "unknown";

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

  # nb:
  # - Although it is the old code, we check this first as there are versions that would match both
  #   checks, but do not expose the version via login.php
  # - login.php often needs some parameters so we check over setup.php first
  url = dir + "/setup/setup.php";

  # nb: Not using http_get_cache() here since we need a "fresh" session id below
  req = http_get(port: port, item: url);
  res = http_keepalive_send_recv(port: port, data: req);

  if (res) {
    # We should get a redirect with a session id
    loc = http_extract_location_from_redirect(port: port, data: res, current_dir: install);
    if (!isnull(loc)) {

      cookie = http_get_cookie_from_header(buf: res, pattern: "[Ss]et-[Cc]ookie\s*:\s*(SESSID=[0-9A-Za-z]+);");
      # nb: If there is no such cookie (which might be possible) create a random one to avoid an
      # error in make_array below.
      if (!cookie)
        cookie = "SESSID=" + rand_str(length: 32, charset: "abcdefghijklmnopqrstuvwxyz0123456789");

      req = http_get_req(port: port, url: loc, add_headers: make_array("Cookie", cookie));
      res = http_keepalive_send_recv(port: port, data: req);

      # <title>ILIAS Setup</title>
      # <title>ILIAS 3 Setup</title>
      if ((res =~ "<title>ILIAS ([0-9] )?Setup</title>" || "<title>ILIAS Setup</title>" >< res) &&
          ("std setup ilSetupLogin" >< res || 'class="ilSetupLogin">' >< res ||
           'class="ilLogin">' >< res || 'class="il_Header">' >< res)) {

        found = TRUE;

        # <small>ILIAS 3.10.5 2009-03-06 (Setup Version 2 Revision: 17651)</small>
        # <small>ILIAS 4.4.6 2014-11-22 (Setup Version 2 Revision: 49592)</small>
        # <div class="row">ILIAS 5.1.13 2016-12-22 (Setup Version 2 Revisio)</div>
        vers = eregmatch(pattern: '(class="row">|<small>)ILIAS ([0-9.]+)', string: res);
        if (!isnull(vers[2])) {
          version = vers[2];
          conclUrl = http_report_vuln_url(port: port, url: loc, url_only: TRUE);
        } else {

          # Some versions requires another request to the login.php to get the real version
          # e.g. 3.4 had only <small>ILIAS3 - setup Version 2.1.61.4.5</small> on the setup page
          url = "/login.php?lang=en";
          req = http_get(port: port, item: url);
          res = http_keepalive_send_recv(port: port, data: req);

          # <p class="very_small">powered by <b>ILIAS</b> (v3.4.3 2005-06-15)</p>
          vers = eregmatch(pattern: ">powered by <b>ILIAS</b> \(v([0-9.]+)", string: res);
          if (!isnull(vers[1])) {
            version = vers[1];
            conclUrl = http_report_vuln_url(port: port, url: url, url_only: TRUE);
          }
        }
      }
    }
  }

  # nb:
  # - Starting with version 7.x, /setup/setup.php is no longer used, it returns a page containing:
  #   "the GUI for the setup is abandoned as of ILIAS 7"
  # - Some systems are also blocking access to the page directly ("forbidden" message)
  if (!found) {
    url = dir;
    res = http_get_cache(item: url + "/", port: port);

    if (res =~ "^HTTP/(1\.[01]|2) 302") {
      loc = http_extract_location_from_redirect(port: port, data: res, current_dir: install);

      if (!isnull(loc)) {
        # nb: Not all targets set cookies, therefore we make this flexible. It can also be only one of the cookies
        # eg. Set-Cookie: ilClientId=thkeaf01; path=/; secure; HttpOnly; SameSite=Lax
        #     Set-Cookie: PHPSESSID=anvq41o3tq0vqpgdf77r3q7qh7; path=/; secure; HttpOnly
        # or
        #     Set-Cookie: PHPSESSID=36f7a4688aa2172f9a4d4009f280c328; path=/; secure; HttpOnly
        if (res =~ "Set-Cookie\s*:.+") {

          cookie = http_get_cookie_from_header(buf: res, pattern: "[Ss]et-[Cc]ookie\s*:\s*(ilClientId=[0-9A-Za-z]+);");
          cookie2 = http_get_cookie_from_header(buf: res, pattern: "[Ss]et-[Cc]ookie\s*:\s*(PHPSESSID=[0-9A-Za-z]+);");
          if (cookie && cookie2) {
            cookie += "; " + cookie2;
          } else if (cookie2) {
            cookie = cookie2;
          }
        }

        if (cookie) {
          req = http_get_req(port: port, url: loc, add_headers: make_array("Cookie", cookie));
          res = http_keepalive_send_recv(port: port, data: req);
        } else {
          res = http_get_cache(item: loc, port: port);
        }

        if (res =~ "^HTTP/(1\.[01]|2) 200" && ("ilias.php?" >< res || "powered by ILIAS" >< res)) {

          found = TRUE;
          conclUrl = http_report_vuln_url(port: port, url: loc, url_only: TRUE);

          # powered by ILIAS (v7.21 2023-05-05)
          # powered by ILIAS (v8.5 2023-09-13)
          # powered by ILIAS (v5.4.26 2021-12-22)
          vers = eregmatch(pattern: "powered by ILIAS \(v([0-9.]+)[^)]+)", string: res);
          if (!isnull(vers[1])) {
            version = vers[1];
          }
        }
      }
    }

    # nb: Fallback detection for direct 200 responses without redirect
    if (!found && res =~ "^HTTP/(1\.[01]|2) 200" && ("ilias.php?" >< res || "powered by ILIAS" >< res)) {

      found = TRUE;
      conclUrl = http_report_vuln_url(port: port, url: url + "/", url_only: TRUE);

      # powered by ILIAS (v10.3 2025-11-04)
      # powered by ILIAS (v10.5 2026-01-20)
      vers = eregmatch(pattern: "powered by ILIAS \(v([0-9.]+)[^)]+)", string: res);
      if (!isnull(vers[1])) {
        version = vers[1];
      }
    }
  }

  if (found) {
    set_kb_item(name: "ilias/detected", value: TRUE);
    set_kb_item(name: "ilias/http/detected", value: TRUE);

    cpe = build_cpe(value: version, exp: "^([0-9.]+)", base: "cpe:/a:ilias:ilias:");
    if (!cpe)
      cpe = "cpe:/a:ilias:ilias";

    register_product(cpe: cpe, location: install, port: port, service: "www");

    log_message(data: build_detection_report(app: "ILIAS", version: version, install: install, cpe: cpe,
                                             concluded: vers[0], concludedUrl: conclUrl),
                port: port);
    exit(0);
  }
}

exit(0);