Samba fixes critical remote code execution vulnerability
The Samba developers have patched a critical security vulnerability that effects all versions of the open source, cross-platform file sharing solution from Samba 3.0.x up to version 3.6.3 which was released in January. The hole allows an attacker to gain complete access to a Samba server from an unauthenticated connection. The GPLv3 licensed Samba is used by many Unix and Linux systems with the ability to share files with Windows systems by implementing the SMB, SMB2 and CIFS protocols.
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump