Webmin / Usermin Detection (HTTP)

# SPDX-FileCopyrightText: 2005 Alert4Web.com
# 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("1.3.6.1.4.1.25623.1.0.10757");
  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_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_name("Webmin / Usermin Detection (HTTP)");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2005 Alert4Web.com");
  script_family("Product detection");
  script_dependencies("find_service.nasl", "httpver.nasl", "global_settings.nasl");
  script_require_ports("Services/www", 10000, 20000);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"summary", value:"HTTP based detection of Webmin / Usermin.");

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

  exit(0);
}

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

# nb: ignore_broken:TRUE is used here because no404.nasl might have set the remote host as "broken"
# due to the existence of the "MiniServ" banner so that no web app scanning is done. But in this
# specific VT we still want to work with this banner so we're ignoring this information.
ports = http_get_ports(default_port_list: make_list(10000, 20000), ignore_broken: TRUE);

foreach port(ports) {

  banner = http_get_remote_headers(port: port, ignore_broken: TRUE);
  buf = http_get_cache(item: "/", port: port);
  if (!banner && !buf)
    continue;

  found = FALSE;
  concluded = NULL;

  # e.g. Server: MiniServ/1.550
  # <title>Login to Webmin</title></head>
  # <td><b>Login to Webmin</b>
  # <title>Login to Usermin</title></head>
  # <td><b>Login to Usermin</b></td>

  if (banner && concl = egrep(pattern: '(^Server\\s*:\\s*MiniServ|Basic realm="Usermin Server")', string: banner, icase: TRUE)) {
    found = TRUE;
    concluded = chomp(concl);
  }

  if (buf && concl = egrep(pattern: ">Login to (Web|User)min<", string: buf, icase: FALSE)) {
    found = TRUE;
    if (concluded)
      concluded += '\n';
    concluded += chomp(concl);
  }

  if (found) {
    vers = "unknown";
    webmin = FALSE;
    usermin = FALSE;

    set_kb_item(name: "usermin_or_webmin/installed", value: TRUE);

    if (">Login to Webmin<" >< buf && banner !~ 'Basic realm="Usermin Server"')
      webmin = TRUE;

    # For example:
    # Server: MiniServ/1.610
    # WWW-authenticate: Basic realm="Usermin Server"
    # nb: The "Usermin Server" is not always there
    else if ("Usermin Server" >< banner || ">Login to Usermin<" >< buf)
      usermin = TRUE;

    vers = eregmatch(pattern: "Server\s*:\s*MiniServ/([0-9]\.[0-9]+)", string: banner, icase: TRUE);
    if (!isnull(vers[1]))
      version = vers[1];

    if (usermin) {
      set_kb_item(name: "usermin/installed", value: TRUE);
      cpe = build_cpe(value: version, exp: "^([0-9.]+)", base: "cpe:/a:webmin:usermin:");
      if (!cpe)
        cpe = "cpe:/a:webmin:usermin";

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

      log_message(data: build_detection_report(app: "Usermin", version: version, install: "/", cpe: cpe,
                                               concluded: concluded),
                  port: port);
    } else {
      set_kb_item(name: "webmin/installed", value: TRUE);
      cpe = build_cpe(value: version, exp: "^([0-9.]+)", base: "cpe:/a:webmin:webmin:");
      if (!cpe)
        cpe = "cpe:/a:webmin:webmin";

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

      log_message(data: build_detection_report(app: "Webmin", version: version, install: "/", cpe:cpe,
                                               concluded: concluded),
                  port: port);
    }
  }
}

exit(0);