AVM FRITZ!Box Detection (SIP)

# 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("1.3.6.1.4.1.25623.1.0.108037");
  script_version("2025-09-09T14:09:45+0000");
  script_tag(name:"last_modification", value:"2025-09-09 14:09:45 +0000 (Tue, 09 Sep 2025)");
  script_tag(name:"creation_date", value:"2017-01-05 13:21:05 +0100 (Thu, 05 Jan 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_name("AVM FRITZ!Box Detection (SIP)");
  script_category(ACT_GATHER_INFO);
  script_family("Product detection");
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_dependencies("sip_detection.nasl", "sip_detection_tcp.nasl");
  script_mandatory_keys("sip/banner/available");

  script_tag(name:"summary", value:"SIP based detection of AVM FRITZ!Box devices.");

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

  exit(0);
}

include("sip.inc");
include("misc_func.inc");
include("port_service_func.inc");

infos = sip_get_port_proto( default_port:"5060", default_proto:"udp" );
port = infos["port"];
proto = infos["proto"];

banner = sip_get_banner( port:port, proto:proto );

if( banner && ( "AVM FRITZ" >< banner || "FRITZ!OS" >< banner ) ) {

  set_kb_item( name:"avm_fritz_box/detected", value:TRUE );
  set_kb_item( name:"avm_fritz_box/sip/" + proto + "/detected", value:TRUE );
  set_kb_item( name:"avm_fritz_box/sip/" + proto + "/port", value:port );
  set_kb_item( name:"avm_fritz_box/sip/" + proto + "/" + port + "/concluded", value:banner );

  type = "unknown";
  model = "unknown";
  fw_version = "unknown";

  # User-Agent: AVM FRITZ!Box Fon WLAN 7170 29.04.76 (Jul 13 2009)
  # User-Agent: AVM FRITZ!Box Fon WLAN 7141 (UI) 40.04.77 TAL (Feb 10 2014)
  # User-Agent: AVM FRITZ!Box 6810 LTE 108.05.56 (Aug 13 2013)
  mo = eregmatch( pattern:'AVM FRITZ!Box (Fon WLAN|WLAN)? ?([0-9]+( (v[0-9]+|vDSL|SL|LTE|Cable))?)', string:banner );
  if( ! isnull( mo[1] ) )
    type = mo[1];

  if( ! isnull( mo[2] ) )
    model = mo[2];

  fw = eregmatch( pattern:'AVM FRITZ!Box .* ([0-9]+\\.[0-9]+\\.[0-9]+)($| |\\()', string:banner );
  if( ! isnull( fw[1] ) )
    fw_version = fw[1];

  set_kb_item( name:"avm_fritz_box/sip/" + proto + "/" + port + "/type", value:type );
  set_kb_item( name:"avm_fritz_box/sip/" + proto + "/" + port + "/model", value:model );
  set_kb_item( name:"avm_fritz_box/sip/" + proto + "/" + port + "/firmware_version", value:fw_version );
}

exit( 0 );