[Samba] Kulak exploit

[Chris Gonnerman]

Some time ago one of my customer's computers was compromised by outside 
attackers, and though we were able to clean it up I never learned how.  
A few weeks back, my own office machine was hacked and the signs were 
similar; but this time I found an exploit program named "kulak" in my 
/tmp directory.

Evidently (according to the source, which the attacker left behind also) 
kulak exploits a buffer overflow in Samba 2.2.8 to get a root shell.  I 
searched Google to no avail for this exploit; so I am asking here.  Is 
this bug fixed in later versions?  Has anyone even heard of this?

-- Chris.